Isaac K. Kim MD | Family Medicine Physician | Downey, CA | PIH Health
Isaac Kwangnyon Kim

Isaac Kwangnyon Kim MD


Family Medicine
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4.6 / 5 (based on 165 Reviews) View 45 Comments

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Dr. Kim chose a career in medicine to help people and do something that challenges him daily. Like his father, he had a nagging curiosity about what could help people become healthier. Since 2004, he continues to appreciate his work both as a personal physician and as a faculty physician teaching and supervising young physicians. Previously, Dr. Kim served as a United States Army physician and was deployed to both Afghanistan and Iraq. He is very close to his wife and three children. In his spare time, Dr. Kim loves to read, watch movies and documentaries, spend time outdoors and play tennis when he can. He enjoys small talk and takes interest in history, cultures and technology.

Office Information

Hospital/Group Affiliation

PIH Health Downey Hospital

PIH Health Whittier Hospital

PIH Health Physicians





  • Family Medicine

Additional Languages

  • Korean


Medical School

Texas Tech University Health Science Center (Lubbock)


Martin Army Community Hospital (Georgia)


Reading Hospital and Medical Center (Pennsylvania)

Board Certifications

  • Family Medicine


Patient Reviews

September 08, 2022
Dr.Kim is a wonderful Doctor. He listens and explains things very well. He truly cares about his patients.
September 08, 2022
He was very understanding, listen to you and taking his time to listen and been very He's been very patient and he gave a good direction and treatment plan. Thank you so much. Bye.
August 27, 2022
The wait times in ... for Urgent Care are a little bit long, but the service was very good. The Dr was very attentive, and very thorough with explanations, and with the examinations. I was ... I was pretty content with the service. So, I would definitely recommend this place. Thank you.
August 27, 2022
I loved how Dr Kim educated me about Covid, I was concern since I have the symptoms but he took care of my concern. I believe I will switch my primary doctor and use Dr Kim .
July 14, 2022
I value my health a lot, I don't just pick any doctor. I need to make sure my vision and goals align with my trusted doctor and I found someone who completely understands patients questions and concerns...Dr Issac Kim is a very patient friendly knowledgeable doctor! I'm excited to start my health journey with him and will recommend all my family and friends to see him! That's how amazing he was! I also heard him with with another patient and I could tell he was a person with passion for this field..I'm really grateful to have found him at PIH. Thank you!!!!
June 30, 2022
We waited over 2 hours when there were only 2 patients in front of us. When I asked the lady in the front how much longer it would be, she replied with we are not Whittier and only have 3 people here. Her reply was rude and uncalled for. We have been to the La Habra Urgent Care many times and always had a great experience.
June 30, 2022
By far my fave Dr I've ever seen at PIH URGENT CARE facilitiesm Bedside manner A+++ He actually cared and listened to me and explained everything to me in laymens terms. I was Soo happy and satisfied with the care I received.I had PIH for yrs lost my insurance and had to go to Kaiser, worst experiences I've received. Got Aetna in May and soooooo happy to be back.Dr. Kim helped me so much I just wanted to hug him cuz I got some relief and answered questions why I was hurting so bad. Front staff I didn't catch her name but she was
June 30, 2022
June 30, 2022
Whittier UCC was packed so we headed here! As usual, no line!!! We were checked in quickly and didn't have to wait long. Dr. Kim did a phenomenal job with my son as he calmed him down and removed a deep splinter from his foot. Explained the care needed the next couple of days.
June 28, 2022
Dr. Kim was very professional and I appreciated that he took the time to explain and listen. You can tell he really cares about his patients and their well being.
June 25, 2022
Sat was a very busy day. There were a lot of people in the wait in the area
June 21, 2022
Wonderful doctor who cares about his patients!!!
June 14, 2022
Dr Kim is an amazing physician. He listens well and gives great advice. Highly recommend to anyone.
June 13, 2022
I just want to say that Isaac Kim is an amazing, excellent doctor, as well as all of his nurses and team and thank you.
June 13, 2022
It's nearly impossible to get someone to answer the phone when calling. The weren't aware I was in for my annual physical, and didn't have a co-pay. I told the front office girl, I had made a payment, showed her my email receipt, but still didn't believe me, and instructed me to call Billing Center. I was embarrassed. I later went up and advised her, I believed I should not have been charged for the visit. She then looked again on her computer, and realized I was correct. I felt like I had to beg my doctor for my refills on my prescriptions. I have been taking a drug that compromises my immune system, and had an upcoming appointment, in 3 months, and they were going to do blood work then. I felt as though I was having kidney pain, as I have had before,
June 11, 2022
Went to urgent care. 1 hour wait, went by fast. Great service
June 02, 2022
The only thing I didn't like is having to wait almost an hour to be seen by the doctor. Otherwise, I was very pleased with the people and the service.
June 02, 2022
I haven't waited so long in the consulting room before. First time seeing Dr Kim , He explained that my primary Health Provider was not in that day. I had the best experience with Dr. Kim, I'm even thinking choosing Him as my new Health Provider.
May 19, 2022
This provider was one of the best doctors that I've ever visited. I am extremely pleased with how he educated us, and his bed side manner was 2nd to none, it was wonderful. So I'm I'm very happy to recommend him to anyone else and I am intend on seeing him for years to come.
April 30, 2022
The waiting time was ridiculous waited hours, wouldn't recommend location But Dr. Was good with kids.
April 30, 2022
Dr. Issac Kim , is an extraordinary doctor with outstanding bedside manners. After seeing so many doctors in my life, he is certainly outstanding in every respect. He explained the problem in detail and his conclusions. He is a real asset for PIH.
April 05, 2022
Dr. Isaac Kim was absolutely the best Dr. And More than Exceeded my every expectation possible! Wonderful wonderful Dr is an understatement!
March 17, 2022
Dr. Kim is amazing at what he does. He truly takes his time to care. I wish our health system had more doctors like him that could make a difference in a patients life.
February 05, 2022
Dr. was very attentive and informative
January 18, 2022
Great service all around.
January 15, 2022
He is the best doctor that I have had the pleasure of meeting. He is the best doctor period in Downey.
January 15, 2022
Clean facility excellent staff and have no words for The doctor for taking the time and listening to me and explaining to me my problem, give them all a raise
December 31, 2021
Waited 3 1/2 hours
December 21, 2021
Dr. Kim, his nurse, and all of the staff in this office where all professional and very respectful during my visit. Doctors of his caliber set the standard for quality health care that was refreshing. Please keep up the great work!
December 16, 2021
I am very pleased with care provided by Dr Kim. He is very detailed and caring physician.
December 11, 2021
Dr. Kim was incredible. I felt very safe and comfortable speaking with him. He understood my situation and had showed a lot of sympathy and a lot of care and I really appreciate his level of caring of my situation. I very much appreciated Dr. Kim.
December 11, 2021
I want to thank Dr. Kim for the follow up call he made, and his genuine concern about my health, and he encouraged me to see a follow up with a urologist, which I'm doing right now. Thank you very much Kim for your time. Thank you. Bye. Bye.
December 11, 2021
Response was better than anticipated and Dr Kim will be remembered for personality as well as his expertise
November 27, 2021
Yeah, Dr. Kim was like man. I wish I could have that guy as a primary like that guy Yeah, I just haven't be able to talk to the doctor like that in a really long time ,or like, maybe probably like ever. But I know that guy made me feel a lot better without even really doing much more than give him the antibiotics. But... After talking to him. I left like a brighter outlook on what I needed to do though. So that was really helpful for me. I really, I really, really like that. Thank you.
November 13, 2021
experience was great, I had been to ER twice for same pain and Dr Kim was able to prescribe me medication that finally worked - I would like to have him as my primary Dr.
November 13, 2021
Dr Issac Kim was nice however he should practice listening more thoroughly and patiently. He kept interrupting me while I was talking the whole time. It was like he was trying to "fill in the blanks" at the end of my sentences when I would try to explain things to him. I had to ask him a few times to please let me finish what I was trying to say.
November 06, 2021
Very good, I liked the attention and that everything was fast, thank you, that you are fine.
November 02, 2021
Dr Kim is very attentive and engaging in explaining medical conditions while providing resources - [PHI removed]
October 26, 2021
The doctor was good. He was honest, kind, and respectful. Explains his sentences well.
October 23, 2021
With Dr. Kim he was attentive, patient, n xaribg with wonderful bedside manners. Explained reason n what to do throughly n made suggestion of products to use.
October 22, 2021
Very long wait in the consulting room
October 09, 2021
He was very friendly and personable. Explained my diagnosis thoroughly. Thought he did a great job!!
October 02, 2021
Hello, my name is [PHI removed] in an agreement is be is being recorded and monitored for quality purposes. And the fact that I will be giving today October 5th at 5:31 p.m. Pacific time. What was determined that was provided, it's not working and we specify I specified out to the doctor, but the doctor was careless to be honest with you guys. About my concerns, my questions. I just wanted to get rid of the patients, the patient, which it was me and send me with no release papers. He said, you don't need it just go home and basically get out of here. I mean my concerns my questions about problem that I was phasing at that time, which is still having and schedule, ready an appointment
October 02, 2021
Check in process, Facility cleanliness and provider care was great, only thing is the waiting time, it took almost 3 hours to be seen by Dr. If this can be improved I think patients would be grateful. Thank you.
October 02, 2021
The entrance to this office was confusing and hard to find. The care by the doctor was excellent. The waiting time to be able to be seen was too long for the amount of patients that were present.
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