Gerald Heeko Yoon

Gerald Heeko Yoon MD

Specialties:

Urology
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4.7 / 5 (based on 636 Reviews) View 125 Comments

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562.907.7600

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Gerald Yoon MD is a board certified Urologist with fellowship training in endoscopic/laparoscopic techniques for the management of all urologic conditions.  He is also trained and experienced in Robotic-assisted laparoscopy which is increasingly more commonly utilized in cancer and anatomical diseases related to the urinary system and male sexual organs.  Dr. Yoon accepts patients of all ages including children and evaluates patients in all the general areas of urology including urinary stones, urinary incontinence, genito-urinary cancers, prostate-related voiding symptoms, male sexual dysfunction and pediatric urology.   He also routinely performs the No-Scalpel Vasectomy in the office using local anesthesia. 

Dr. Yoon has received the designation of Center of Excellence in UroLift procedures.  This designation comes as a result of extensive UroLift procedures performed with favorable measured patient outcomes while also maintaining on-going continuing medical education activities. 

Dr. Yoon strives to maintain up-to-date training and education in order to keep up with the advances that continue to take place in the specialty of Urology.  He hopes to incorporate these advances in his clinical practice for the benefit of all his patients. 

Office Information

  • Urology Whittier

    14350 Whittier Blvd #100 Whittier, CA 90605

    Main: 562.907.7600
    Fax: 562.907.7602
  • Urology Downey

    11480 Brookshire Ave #204 Downey, CA 90241

    Main: 562.904.4470
    Fax: 562.904.4479

Hospital/Group Affiliation

PIH Health Downey Hospital

PIH Health Whittier Hospital

PIH Health Physicians

Profile

Gender

Male

Specialties

  • Urology

Additional Languages

  • Korean
  • Spanish

Education

Medical School

University of Virginia School of Medicine (Charlotesville)

Internship

University of Southern California Medical Center (Los Angeles)

Residency

University of Southern California Medical Center (Los Angeles)

Fellowship

Kaiser Foundation Hospital-Los Angeles (California)

Board Certifications

  • Urology

Video

Patient Reviews

August 24, 2026
I received excellent care from the doctor. He's a very professional doctor. The doctor's assistants were very kind. I have nothing but praise for them; they treat you very well. Thank you.
August 18, 2026
Good experience
August 13, 2026
Dr. Yoon is patiently working with me during as I adjust to the recent demands of my diabetes, kidneys, enlarged bladder and prostrate. I am trying to understand my system and work with Dr. (name removed) (Nephrologist) to keep my kidneys healthy. Dr. Yoon continues to suggest that I need to self catherize. The office taught me to do that. I ended up in ER before I had a chance to give it a second try.
August 13, 2026
Excellent patient care and professional services.
August 06, 2026
Excellent service. Thank you so much. Thank you very much.
August 04, 2026
No problems
August 04, 2026
Dr. Yoon has always been very patient and considerate whenever I have a concern or questions. He explains information in an understandable manner. He is also very professional and respectful.
August 04, 2026
Office staff and Dr. Yoon are always professional, knowledgeable, and courteous. I trust Dr. Yoon; he always goes above and beyond to answer my questions.
July 30, 2026
Well, it was excellent. The doctor, all the people at the office, I'm very happy.
July 28, 2026
I'm doing very well, thank God. They were very friendly to me, everything was very helpful, and I truly recommend it. Thank you.
July 28, 2026
I was taken from the waiting room to an exam room, medical assistant came in & gave me a cup for urine specimen, I used the restroom & went back to exam room where I waited for AN HOUR to see the physician because the medical assistant forgot about me!!!
July 21, 2026
Very attentive and friendly staff.
July 21, 2026
Great meeting. Dr Yoon is very attentive and listens to what I have to say.
July 13, 2026
Dr. Yoon carefully lessons and I appreciate that, and he gives me respect, as well as his staff they too give me respect. I've been to a lot of different places, and businesses that don't give you respect, this is not good, especially for someone that is disabled and you don't look disabled or you don't look like you're a senior citizen, and you don't look like you need help. This is what I like about the staff and Dr. Yoon, they treat you with respect no matter what you look like!
July 13, 2026
Office staff was friendly, courteous, and efficient. Thank you!
July 07, 2026
I had my annual visit with Dr. Yoon yesterday. We went over the results of my blood test. Dr. Yoon did an excellent job of explaining the meaning of a problematic result in a way that eased my mind. In addition, Dr. Yoon asked me several routine questions that we then discussed. Overall, Dr. Yoon did an excellent job in the meeting.
July 02, 2026
I waited longer for him than he was in the examining room with me. And I looked at the report that he did on me and he said he did a physical examination and he didn't even touch me. So.
July 02, 2026
I arrived at 2:30p right on time for my appt and I left at 3:40p. I spoke with people for a total of 15 mins. The rest of my time was waiting in the room by myself. The doctor didn't even examine me. Read all my chart history and looked at the imaging result I brought in and the staff scanned and uploaded and then we agreed to schedule the next diagnostic. I could have done all this via telehealth. My test sample was also not necessary because it was already done by my PCP the prior month. This was a very inefficient use of my time and I was still charged $65 for it and the only thing I received was an appt to return in 2 weeks. This was very very low value for me as a patient and it felt like a bureaucratic step to enable me to move forward with the next diagnostic step/order.
July 02, 2026
Very good doctor!
June 30, 2026
The Best
June 29, 2026
You should explain to a patient that, okay, why would you all do this? Suggest them to do this or that to make better improvements on them. And that's all. Thank you.
June 29, 2026
Dr Yoon 's nurse had a " I don't care attitude". She was not very caring
June 22, 2026
Clean facility nice personnel wonderful doc
June 11, 2026
I like the manner in which Dr. Yoon treats me as a patient. He tells me what my ailment may be and treats me accordingly. He pays attention to what I have to say, and tells me what is the truth, not what I want to hear.
June 10, 2026
Good
June 08, 2026
Other than a long wait time, 30min after my appt & 10min inside the exam room, I would return as I felt respected & listened to.
June 08, 2026
Great service from the entire office
June 04, 2026
I would like a little more detail about the consultation regarding the visit.
June 01, 2026
I wish Doctor (name removed) was back. Don't want to see any other as long as (name removed) is available.
May 26, 2026
Yes, I just believe that the front office was kind of smelly and it was really, really uncomfortable. But once I reached the back office, it was super bright and clean. So I think they need to improve on their odor as soon as you walk in. It was pretty strong. It wasn't a patient. It was just the office in itself. So I'm hoping that they can improve that. Thank you.
May 21, 2026
The waiting room was more comfortable, with less chairs & less patients. D. Yoon is always very professional & kind when speaking to me. I must compliment the nurse who attended & took care of me when I felt a little dizzy. She helped me dress, & kindly walked me out to the reception area. I cannot remember her name. She was exceptional.
May 18, 2026
Dr. is Miracle doctor. Got rid of Prostate problem giving me almost a new life. Very thankful to him.
May 11, 2026
Hello, thank you. It's not that the doctor, the doctor was very nice. It's just a nurse that came into the office with us. She wanted us to take our mom to the restroom and help her right there. And that took us by surprise, my brother and me. And I think that's why I was putting low scores right there to get the attention. Other places, the nurse helps with my mom, and my mom kind of became aware of it. And she said something, my mom's 99 years old, has Alzheimer's, and to have her sons have her do that, she takes some pride in herself. And I think there needs to be something worked out. My brother mentioned that maybe at Southern Cal where my mom came from, the convalescent home, they can do the testing there. But it was kind of like the nurse was a little bit off on that and it was kind of like awkward at that moment.
May 11, 2026
Great customer from arrival to check out. Dr. Yoon provided a comfortable environment patiently addressing concerns that were easy to understand. Dr. Yoon took the time to perform tests and explain results in a reassuring manner that made you feel valued as a patient.
May 07, 2026
Thank you Dr. for caring!
May 05, 2026
First time we see this doctor, so we don't really have any opinion, but it was fine for today. Thank you.
May 05, 2026
The office staff seemed bothered by questions, didn't greet when we walked in, didn't greet any of the people that walked in after us or say goodbye to any of the people that left. It just felt very cold and like the office staff really didn't care.
May 04, 2026
Just nice and clean very professional.
April 30, 2026
Iam very pleased with Dr. Yoon and his team for the service and care they showed me everytime I see him.
April 27, 2026
Dr. Yoon is an excellent doctor. I have seen him for years. I trust his advise.
April 23, 2026
So I was in last week and I was, I'm always happy with the service provided by Dr. Yoon, but what I'm not happy with is the computer system crashed and I was not able to get information on a previous appointment. I was supposed to get a call back and I was supposed to receive prescriptions as well. They weren't able to order my prescriptions and I have yet to hear back from the doctors or my prescription hasn't even been filled yet. So I wasn't real happy with the technology with the computers crashing. But other than that, the doctor's great and the staff is great.
April 21, 2026
Having an appointment with Dr. Yoon, the White Coat Syndrome definitely doesn't exist.
April 14, 2026
To me he is Great Doctor and caring. Been going to him for a long time
April 13, 2026
5 Star
April 09, 2026
i feel like he just cant fix problem
April 02, 2026
Please answer the phone when we're trying to make a call to you. All clients, customers, or whatever you may call us. We deserve to have the telephone picked up.
March 31, 2026
Doctor was pleasant and efficient and that sums it up. Thank you.
March 23, 2026
Thank you for always taking care of me and my family.
March 23, 2026
We felt somewhat rushed when we were consulting, but other than that, it was good.
March 23, 2026
Dr. Yoon is the best!
March 17, 2026
Dr. Gerald Yoon is an experienced and knowledgeable physician and I trust him to provide the best care for my health.
March 16, 2026
The information was clear because of the situation it could get worse if they did in operation to remove the extra fluid within my testicles. The only thing that was not explained was our conversation was being recorded. I seen the DJI with the green light on in the v of the doctors shirt. A just to let me know you are being recorded would had been nice. Asking for permission would allow me to say I do or don't mind being recorded? Is this legal or illegal? Well it's illegal in Los Angeles county. The should be informed! Just because I'm old doesn't make me stupid. I'm not a sue you person. But you may have one in the future.
March 16, 2026
Yes, I really enjoyed Dr. Yoon. He's a specialist in urology and it's the first time I saw him. I enjoyed speaking with him because he explained everything to me thoroughly. He listened to me and which it was very important to me, especially what I'm going through. And he seemed to understand everything I was saying and why I was saying it. So I felt very comfortable with him. I felt very safe with him and I felt he would be a good doctor for me. So yes, I am very looking forward to my next meeting with him and see what else he has to offer to help me to feel better. So thank you so much for him, PIH. I think he's a wonderful doctor. I feel very lucky to have him. Thank you.
March 16, 2026
My experience was awesome from the front office staff. Doctor yoon was attentive, listen to all of my concerns and made me Feel at ease when the results came back . I personally was able to speak to him to ask a question as always , very pleasant experience
March 12, 2026
I was treated very well for my first visit and I appreciated the office staff and the physician. However, one office visit is hard to tell how good the office is, so I wouldn't mind getting a call back maybe after the second or third visit and following up then. Thank you.
March 09, 2026
I can't really recommend it because it was my first time. That's all I can say.
March 09, 2026
Dr Yoon was very professional and took the time to answer my questions. He did not appear rushed and ensured all my concerns/questions were addressed. He was very knowledgeable as well and used evidence based references as well as anatomical models during my visit. Very impressed and thank you.
March 05, 2026
Everyone was great, Dr was very kind, staff at the office very nice, but I do have to complain that when I called to schedule my appointment the secretary that answered was rude and not understanding, I had a foley and needed it to be removed asap, she didn't care and wasn't understanding, she said she would call be back to see if I could see a another provider, never got a call. 2 days before my appointment got a text to confirm my appointment!, didn't even know she scheduled one for me, at this point I already had my foley removed, wasn't gonna wait. But other than this one particular person, everyone was awesome!
March 03, 2026
He did a great job.
March 02, 2026
Thank you for the attention from the staff and the doctor; they were very attentive to me.
March 02, 2026
Their attention and explanations, and their very attentive nurses as well.
February 23, 2026
I had difficulty scheduling my follow-up visit after an operation, but once I finally got to see the doctor, I was very, very satisfied with the care I received. But his staff kind of blew it on getting the reservation or getting the appointment taken care of in a timely manner.
February 19, 2026
I was very disappointed that Dr. Yoon did not have the information about why the visit was made and what the visit was for. It was very unclear to the office why the facility sent (PHI removed) to the appointment.
February 19, 2026
Making next appointment ahead of the time seems a bit difficult recently.
February 17, 2026
Dr Gerald Yoon is as professional as they come. He's knowledgeable and makes you feel comfortable and able to talk about anything.
February 17, 2026
Thank you very much Dr. Yoon and staff! I would highly recommend Urolift over pills!
February 13, 2026
Dr. Yoon is very professional, explains everything in very detail. I would like to make a shout out to Nurse (name removed). She was the best. She really took care of me, as well as Dr. Yoon. Shout out to the surgery department and the same day surgery department. They were amazing. Kudos for hiring such nice, professional, patient, and polite people.
February 10, 2026
He told me I had bladder cancer with no proof and kept asking me if I had any questions. I told him I was in shock and didn't even know what to ask. For the next 4 days, 3 times a day I called the office asking him to call me. He never called!!!
February 10, 2026
Dr. Yoon is a true professional. I trust him with my care.
February 05, 2026
I am on an on going treatment program for a tumor on my bladder. So i have regular appointments to monitor this condition. I am satisfied with my situation and the care.
February 03, 2026
I have been a patient of Dr Yoon for quite a few years and he has always been considerate of all my questions and concerns. I appreciated the follow-up calls I received whenever an issue would need further testing, or to share results.
February 03, 2026
Dr. Yoon is a very good Doctor, have been seeing him since he came to this office!
February 02, 2026
Actually, I was in and there, in and out of there quite fast, and I was very impressed with the office, and I did tell that to the attendant, and that's it.
February 02, 2026
I felt like I was talking to a wall, I felt like he wasn't giving me the attention I needed and I felt like he wasn't interested in my case.
January 27, 2026
Provider did not make me feel comfortable. I came in for an evaluation. I felt that he did not want to work with me. Although he provided me with information, it was generic information that I already knew from a previous provider. I also did not like that he did not spend time reviewing my chart before I came in, so he was surprised when I told him I was pregnant and he just did not seem very helpful.
January 26, 2026
Dr. Gerald Yoon is a very knowledgeable and skillful doctor. He performed my total nephrectomy 2 years ago. The surgery was successful, I left the hospital in 24 hours and I was back to my normal life again.
January 26, 2026
Everything is already here, which is an excellent service.
January 26, 2026
I look forward and love to see all my wonderful doctors and great staff. Thank you guys so so so much and all the best for the new year
January 20, 2026
Dr. Yoon is professional, yet is friendly and makes you feel comfortable.
January 20, 2026
The wait was short. The consultation itself took a reasonable amount of time.
January 19, 2026
Gracias,Dr.Yoon & Staff
January 15, 2026
I really appreciate all the doctors and nurses at the PAH hospital and at the clinic that I went to to take out my stent. I really thank you guys for doing everything that you can for me and I appreciate you guys. Thank you.
January 13, 2026
Dr. Yoon is a very polite and nice doctor. Very skilled in his field. And, listed to all my questions. He answered all my questions in a way that I could understand.
January 13, 2026
Dr. Yoon answered all my question and put me at ease about tge up coming procedures!
January 12, 2026
They promised me on the phone to contact Dr. (name removed) office to get my lab report I did on 01/06/2026 needed by Dr. Gerald Yoon, but apparently, they didn't do it.
December 23, 2025
My husband and myself see Dr. Yoon. He's great
December 23, 2025
Doctor's assistants happy and friendly as aways, front office cold, no smile, like they are force to work.
December 22, 2025
How you done? Dr. Yoon did a great job. It's been a year since he did an operation on me. The 31st would be when he took out the folly and the bag off me and told me to pee. And it was the greatest thing of my life. He is the best doctor and I recommend him to anybody. I know some doctors don't like it when you talk to them and appreciate them, but I appreciate him. I thank you for saving who I am and making me go on in life. And I recommend him to anybody. And I thank you for your services and I'm waiting for my next appointment. Thank you.
December 18, 2025
This provider should have taken more opportunity to help us out instead of sending us to the IR, which would be difficult to acquire. He has more connections and he knows the jargon what to use in order to help us to get a valve for my dad. And so I feel that he wasted our time in which we would have to wait and see about getting an appointment so we had to kind of push for help. And so luckily his staff had helped us in a way that he did not. So thankful for the staff that they were able to get things done, but the provider failed. Thank you.
December 11, 2025
Very good you're very nice
December 11, 2025
They are very attentive.
December 09, 2025
Dr. YOON listen to me carefully. I told you about my problems and he came up with the solutions. Dr. YOON helped me a lot.
December 08, 2025
He did a good job. I asked questions about my sickness and he answered me. And he's very worried and he sent me to immediately. So I really like it. I really is a good doctor.
December 01, 2025
Appt was at 2:15p. Didn't see the doctor until an hour+ later. We never discussed any new medications, but when I got home, I had a message from my pharmacy saying that I had two prescriptions ready to be picked up. One was for cephalexin, and the other was for lorazepam. I immediately called the doctors office to question whether or not these prescriptions were meant for me or were placed in error. I was told that I could not speak to the doctor and that somebody would get back to me later. I asked if they would call me and they said yes. I asked if they would call me the same day and they said no. I went onto the portal and sent Doctor Yoon a message, asking him about the prescriptions. The next day I had a message from an LVN, not the doctor, telling me that they were prescribed an error. I view this as a significant error and problem. If this had happened to another patient, perhaps an elderly person, I could see them getting the prescriptions and taking them because they thought they were supposed to. I think your processes need to be reviewed to see how this happened. PIH is definitely not the hospital and medical group it used to be.
November 25, 2025
Very professional and courteous.
November 24, 2025
The staff and Dr. Yoon were extremely professional and I would have given all fours except I didn't listen to the first part of the message. Everything was a definite yes for me. They were great about everything and I would definitely go back and see them and recommend anybody to them. Thank you.
November 20, 2025
my experience was good
November 13, 2025
The doctor is looking after everything; he's professional, and I'm comfortable with his service and professionalism.
November 10, 2025
I would have liked the doctor to explain the procedure he was going to perform to me more, because he said he was going to give me Botox injections in my bladder, but he said the nurse would call me to give me all the information. And honestly, I don't know much about that, I don't understand. It was recommended to me, but I don't know how it works, because I thought it would be done right there in the office. He said no, that I had to be hospitalized and all, but he didn't give me any details about what he was going to do, nor did he tell me how long the procedure would last or anything like that. He just said the nurse would contact me, and that's why I didn't like it much. That's my comment.
November 06, 2025
Horrible care
November 04, 2025
Doctor listened to what I had to say and provided information on my condition.
November 03, 2025
Good service
November 03, 2025
All staff was courteous and professional, especially the nurse attendant for the doctor. Upon completion of the exam, she asked if I would like her to schedule my next appointment with the doctor Yoon? She saved me the time I would have had to stand in line to schedule my next appointment. Dr. Yoon is always kind & concerned, and makes the exam tolerable. Due to his surgical skills, I am still cancer free. Amen!
October 30, 2025
Everything was good. The doctor is very, very intelligent and complete professional. That's it.
October 27, 2025
I just like him good doctor.
October 27, 2025
Dr. Yoon and his staff are very courteous and professional. Could not be any happier.
October 23, 2025
Dr. Yoon was incredibly attentive and made me feel truly heard throughout the visit.
October 23, 2025
Dr Yoon provided answers to all my questions!
October 23, 2025
Dr (name removed) is a truly professional doctor treating her patients with respect for them and their medical needs. Her office staff is respectful and considerate.
October 21, 2025
On this occasion, as on previous visits, the service has been exceptionally good.
October 20, 2025
I got a second opinion about my condition at a much more expensive hospital and they said that I was getting the same treatment that they would have provided.
October 20, 2025
Everyone in this office are very professional.
October 16, 2025
The Doctor I felt did not really ask questions he seemed disinterested and was not personable at all , he listened to what I had to say but seemed not interested he did answer me but didn't give enough information in helping me I believe . I'm sure the other doctors are good I just felt like he was not.
October 14, 2025
I was called in on time. Staff very friendly. Good visit.
October 13, 2025
Good service and friendliness.
October 06, 2025
I tried to make my appt with Dr Yoon on your website and it wouldn't give me one. It booked me with someone else - hot happy about that. I finally called and was able to book an appt with Dr Yoon. Why?
September 29, 2025
Doctor Gerald Yoon answered all of my questions . He was also highly recommended to me by a close friend and they were right! I was very impressed! It was evident that teamwork is ongoing! Everyone was polite, professional and on point! Thank you for the positive end results! Sincerely, (PHI removed)
September 29, 2025
All the staff are very courteous. Keep it up!!!
September 29, 2025
Very professional service
September 22, 2025
Glad to see you are taking time to listen to the patient. Being frank with recommendations and offering options is fantastic. The entire experience was pleasant.
September 19, 2025
The staff is consistently unfriendly. They ALWAYS act like they don't want to be there. I have even been cut off mid sentence while explaining why I was contacting them. That said, (name removed), the surgery scheduler is such a joy and radiates friendliness.
September 18, 2025
DO NOT KEEP ME WAITING IN THE ROOMS FOR SO LONG. ALMOST HALF AN HOUR AFTER MY APPOINTMENT.
September 18, 2025
Dr. Yoon is great. He listened and answered all of my questions. He was not in a rushed manner - took time to discuss at length regarding my situation. Very kind and knowledgeable. ({PHI removed)
September 11, 2025
Hello, my name is (PHI removed). I had a great experience with Dr. Yoon and his staff. Everybody was courteous to you, nice and helpful. Thank you very much. Appreciate it.
September 08, 2025
Excellent interpersonal skills, knowledgeable and pleasant.
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