Sy Oang DO | Internal Medicine Physician | Whittier, CA | PIH Health
Sy H. Oang

Sy H. Oang DO


Internal Medicine
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4.8 / 5 (based on 536 Reviews) View 116 Comments

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Dr. Oang knew he wanted to pursue medicine growing up in his native Cambodia. “I was sick a lot during grade school, even missing vacations with my family. So, I decided to be a physician to take care of myself,” he says, adding that “Internal medicine offers a broad base of knowledge, which enables me to take care of patients with all different medical problems.”

Dr. Oang survived Cambodia’s brutal dictator Pol Pot and the Khmer Rouge regime, responsible for killing more than a million people in the 1970s. Today he likes to vacation with his family.

Office Information

Hospital/Group Affiliation

PIH Health Physicians





  • Internal Medicine

Additional Languages

  • Cambodian


Medical School

Michigan State University College of Osteopathic Medicine (East Lansing)


Michigan State University-Sparrow Hospital (Lansing)


Michigan State University-Sparrow Hospital (Lansing)

Board Certifications

  • Internal Medicine


Patient Reviews

June 24, 2022
Wonderful pleasant relaxing ... Confident when you need an answer you get an answer if not you can patiently wait for just a few and I'll get back to you promptly very professional my dad is also a PIH patient my mom is it a resting home at Whittier PIH Orchard... My doctor was wonderful very aggressive very prompt very promising confident when you walk out of there you make your day very easy I have a lot to say I wish I can be able to continue which I still will for the insurance (PHI removed) CHAVIRA
June 06, 2022
Dr Oang is always compassionate and caring and takes the time to make me feel fully understood. I sincerely feel he has my best interest and is extremely knowledgeable and experienced.
June 01, 2022
Dr. Sy Oang has been my primary doctor for many years. I feel very comfortable and trust him with my care. I know that he has my best interest at heart.
May 20, 2022
An outstanding doctor. Concerned about my health. My primary care physical for 20 years. Knowledgeable, thorough and compassionate.
May 20, 2022
It' perfect.
May 20, 2022
Dr. Oang was great. I got an appointment with him because my regular doctor wasn't available. The telehealth appointment was really easy. He answered all my questions.
May 19, 2022
As always a great experience
May 19, 2022
great doc
May 19, 2022
May 18, 2022
Dr. Oang and his staff are amazing. I am very fortunate to be under his care for over 20 years. His dedication, knowledge, patience, expertise, kindness, politeness and support are legendary - I am so happy to be his patient and thank you PIH for having Doctors like Dr. Oang and his staff. God Bless you (PHI removed)
May 16, 2022
Your staff and the doctors, everyone in your office are extremely, extremely great. They're professional. They're knowledgeable. They're kind and I really, really appreciate them all. You have an outstanding staff.
May 13, 2022
May 12, 2022
I love and trust Dr Oang. He has been my doctor and looked out for me for many many years
May 11, 2022
Yes, I was very pleased with Dr. Oang, and the office personnel they're all courteous and they treat me nicely, and I feel comfortable with all of them. Thank you. Bye bye.
May 09, 2022
(name removed), a member of the staff working with Dr. Oang is a wonderfully kind person and a great professional. Dr. Oang has an amazing amount of empathy and good medical advice. He's thoughtful, attentive, and very caring. We're grateful for their expertise and kindness.
May 06, 2022
The doctor was nice and patient with my mom. Thank you!
May 02, 2022
My husband and I are extremely pleased that Dr. Sy Oang is our Primary Care Dr. We trust him implicitly with all his recommendations and advise. His staff is very efficient and cordial. Thank you Dr. Oang and Staff.
April 29, 2022
Wow Dr. Oang you are amazing doctor
April 29, 2022
Being in the hands of this doctor and his staff gives this 84yr old comfort in knowing I am cared for no matter what concerns I have about my health.
April 28, 2022
Yes, Dr. Oang is a very experienced and intelligent man, and is also very personal full and a like apple man who really encourages you to share what's going on with your health and is concerned about it. And goes to every links to make sure that your needs are met and referrals are made to make sure your health is in good health. Thank you.
April 27, 2022
Great staff and PCP.
April 20, 2022
I actually look forward to my appointments with Dr. Oang. I enjoy and trust his care. He answers all my questions with patience, understanding and great explanation. Going to see Dr. Oang is a perk in my day. I feel he genuinely cares for not only my health but me as a person. Dr. Oang is thee best!
April 14, 2022
Dr Sy Oang is very special to me. His a great doctor who has taken care of me for 25 years.
April 13, 2022
It's Dr. Oang has an amazing provider. He always listen to everything I have to say, and Makes me feel like he really cares about my care.
April 13, 2022
I am very pleased with the care I have received from Dr. Oang for many years. I trust him with completely.
March 18, 2022
Dr. Oang is such a great doctor. He is always concerned with my health. He always make sure that i take my medicine and that i'm doing what is right for my body.
March 18, 2022
He is exellant
March 17, 2022
Doctor provided, explai ned in detail of results of blood work. How to keep healthy. Check me thoroughly heart, lungs etc. Always a pleasure to see Dr. Oang and staff.
March 17, 2022
Dr Oang is very professional, kind, and knowledgeable!
March 11, 2022
I felt very comfortable talking to the dr. Oang made me feel like he know me. Very professional with my concerns. Welling to listen to me, nothing letting me go until I understood what was going on with my health.
March 07, 2022
Dr.Oang is a great listener. I would explain to him my aches, my pains, also explain to him on my feelings, he would stand there and listen. If it wasn't for Dr. Oang I would have never found out I had kidney cancer. He is a terrific doctor and PIH should be honor to have him. He also is personable, he smile is infectious and when I am sad he touches my hand and looks through my pain. I also talk to my friends and to even people I have just met. Dr Oang is the doctor of doctors!
March 07, 2022
Dr. Oang is a very awesome doctor I really appreciate that he takes the time, he's very knowledgeable, the explains everything. If you reviews your records, any questions that you have is very patient, and he answers them . So I will not be going to P.I.H. it was not for Dr. Oang.
March 07, 2022
Dr Oang is simply the BEST !
March 04, 2022
I'm very grateful, for the good service, I get.
March 04, 2022
Dr. Oang is an excellent doctor who really cares about his patients. He even follows up with in person calls when needed. Many thanks to Dr. Oang!
March 02, 2022
I love Dr. Oang but I want to share him with as few patients as possible!!! Just selfish, I know.
February 28, 2022
I find Dr. Oang to be a very, very caring and capable physician. He listens carefully. He is proactive. He always takes care of me and orders any tests that he knows I need at the time. He is well aware of my history and dates of past exam and dates of necessary exams in the future. I just feel like he's very much on top of my health care and I really appreciate that.
February 24, 2022
Dr. Oang and he's staff are wonderful. So glad he's my primary care physician.
February 24, 2022
Great Doctor
February 23, 2022
I've been with Dr. Oang for years. Trust him totally with my health care and advice I get from him. He takes the time to explain everything and answer all healthcare questions. Great caring doctor!
February 16, 2022
Know Dr Oang for a long time and fell very comfortable with him. I trust him
February 15, 2022
excellent and professional service
February 10, 2022
We appreciate Dr Oang's excellent care for us for many years!?
February 09, 2022
Such a caring doctor. Explained everything and took the time to listen to my concerns. Ordered tests to figure out problem.
February 07, 2022
Dr Oang truly cares about his patients. He recognizes the whole person, not just a collection of symptoms or an age and gender. I trust and appreciate his expertise.
February 04, 2022
Dr. Oang and his nurse was very caring towards my health. I am very blessed to have them treated me. Thank you very kindly to my doctor and his nurse.
February 04, 2022
Dr. Oang is so great! Been going there for years & I always trust him. I also get his opinion on some serious things specialists have talked to me about. (name removed) is The Greatest nurse assistant?
February 03, 2022
I respect and trust Dr OANG very appreciate.
February 02, 2022
Provided very helpful sugestiones.
February 02, 2022
This physician is the best of the best
January 28, 2022
Dr. Oang's office is very professional and the nurses, [name removed] and the rest are very very good to everyone. They make you feel comfortable no matter what very professional. Very nice and very caring, never seen such nice nurses. And Dr. Oang the best.
January 24, 2022
Office Staff surly and short. Also mask Nazis
January 24, 2022
Dr. Oang is the best
January 21, 2022
Dr Oang was extremely accommodating. Appreciate the curtesy and attention he provided. We value both his professional competence and his demeanor with patients. Also appreciate [name removed attentiveness and help.
January 20, 2022
Great doctor that our family has trusted for years.
January 17, 2022
I've been seeing this doctor for years and he's a real good doctor and I trust him very much. He really knows the stuff.
January 14, 2022
Been a patient of doctor Oang for a long time , so glad he is my doctor .
January 13, 2022
My interaction with my care provider has always been beneficial to me. There are two questions that are always asked on a questionnaire. Do you have a hard time falling asleep and do you sweat at night and I've always answered those questions with a yes. I've always figured that if they were important then he would bring it up, but, so, it has never been brought up.
January 10, 2022
Thank you Dr Sy Oang for caring for me via Telehealth video and still calling me later that evening to check on my well being. Very caring provider. ??
January 10, 2022
Dr Oang is always so thorough with my exam and I'm so impressed with the way he treats hos patients.
January 05, 2022
After all, it's a very educational and very curious doctor. He saved my life. He (INAUDIBLE) found out through his expertise, that I had leukemia and he made arrangements for to give Healdsburg. So yes, he is an excellent doctor.
January 05, 2022
Dr. Oang has always given me the best care with the most care and his Nurse also she's great.
December 20, 2021
Dr Oang has always been a kind and caring doctor to me and my husband.
December 17, 2021
Dr. Oang is a Great person & doctor!
December 15, 2021
Dr. Oang is very personable and she takes good care of me. Absolutely amazing doctor that I would refer to family or friends.
December 15, 2021
Every time I come here the staff is courteous and professional. Dr. Sy Oang is the BEST! He cares about his patients, is extremely knowledgeable, and always offers the right remedies to always get me going. where ever he goes, I'm following if possible. He's a five star doctor!
December 15, 2021
Dr Oang is one of your Doctors.
December 15, 2021
I have been a patient of Dr Oang's for many years. I value our relationship.
December 09, 2021
Dr. Oang has been our primary doctor for many years. He is very polite, very caring and very understanding. In addition, he is extremely knowledgeable about everything medical. Unfortunately, my wife and I have had numerous medical issues over the last dozen years so we've had to see many specialists. Dr. Oang's diagnosis on our issues has always been spot on. His advice either matches what the specialists say or supersedes it. His medical knowledgeable and memory are incredible. My wife and I are very fortunate to have Dr. Oang as our primary doctor. We have total confidence in him and we trust him completely.
December 06, 2021
My Dr. Is the best. I would never choose anyone else. I feel very very satisfied with him.
December 01, 2021
Very positive
December 01, 2021
Dr Oang was attentive, listened, explained blood results and explained in good detail a good action plan going forward. Positive experience with the Dr. Highly recommend.
November 29, 2021
Appointments are scheduled and visits are always held in a timely manner. Don't think I've ever walked into a packed waiting room.
November 29, 2021
Great doctor. I trust him with my life! Can't get any better than that!
November 22, 2021
Dr Oang is my favorite of any doctor I've had.. I want everyone to see him for their care! I've never seen anyone spend time with you, going over blood work, etc And.. he listens to you when you have questions or different views
November 19, 2021
Excellent customer service.
November 19, 2021
Dr Oang is professional, caring, and communicates well so I totally understand my health issues. Dr encourages me to be in the best health possible. He's always giving me attainable tips how to achieve good health. Dr explains my lab results and answers all my questions. I'm pleased and confident with being under the care of Dr. Oang. Dr's staff is a reflection of himself, caring, respectful, professional. I pray Dr. continues to be a part of the PIH Health team forever!! I'm very comfortable when I visit any PIH Health facility. Very happy patient indeed.
November 18, 2021
Outstanding outstanding outstanding My Doctor is god send staff is outstanding really care about your health Thank you in so many ways cancer patient.
November 18, 2021
Dr. Oang is the best and his nurse too!!??
November 18, 2021
good doctor
November 17, 2021
Everyone in this office is kind, compassionate, and friendly!
November 17, 2021
My doctor is probably the best and caring person that I know with except my knee and foot doctor at Pih you have the best staff and doctors
November 17, 2021
The Doctor & staff were very professional and were very interested in my care.
November 17, 2021
As always Dr. Oang is very thorough and professional, when ever I go in to see him. [name removed], his nurse, is just as nice and professional as the doctor. You never feel rushed and whenever I've needed to have an emergency appointment they both try to accomodate me as quick as possible. I always walk out feeling relieved that I been treated by him.
November 11, 2021
I have recommended Dr. Oang to many friends, he's the best! He's very thorough, and he's friendly and LISTENS!!!
November 11, 2021
Dr. Oang is a exceptional doctor, He's been my Dr. for over 10 years and I value his opinion. I consider him not only my doctor but also my friend. Also his staffers top notch. Especially [name removed] always returns my calls in a prompt time we matter.
November 11, 2021
November 11, 2021
Dr. Oang has been my doctor for more than 10 years and he is the best.
November 10, 2021
I have had Dr. Oang for 25 years or so. I believe he and his staff are excellent care providers.
November 08, 2021
Doctor Oang is a very caring and thorough doctor. We are very confident and trusting in him. He is simply the best doctor we have ever had. His staff is very good especially [name removed]. She is very efficient and good at what she does. Could not ask for more!
November 08, 2021
Dr Sy Oang is one of the best doctors in PIH network !!
November 05, 2021
I am very happy with my time with the Dr.
November 04, 2021
Dr. Oang always listens to me, he's an excellent doctor. His staff is courteous, they answer my questions, they call back with information or anything that I need. They are excellent. Thank you very much for your help. Bye.
November 04, 2021
I love this provider and his office staff! I have sent three other family members to him and they love him too! Thank you Dr Oang!
November 04, 2021
Very professional and courteous.
November 03, 2021
Trusted with my primary care!!
November 03, 2021
Great experience as this was our first time with Dr. oang
October 29, 2021
Yes, I am very, very pleased and happy with the Provider Services.
October 28, 2021
Dr Oang explain the results of my blood work that I could understand and what I had to do to improve myself and my health
October 28, 2021
Dr Oang is the most caring and knowledgeable dr I have seen and if he feels another specialist is needed he doesn't hesitate to refer. I would and have recommended him to my family members and friends. I feel he is an asset to PIH as an internal med doctor I wouldn't have any other way personally
October 28, 2021
Dr. Oang was and is by far the best doctor there is.
October 28, 2021
Dr. Oang is a very caring Doctor he explains things carefully thank you ??
October 18, 2021
This was my first visit with him. He reviewed all my medical records from my other doctor, took time to explain everything to me and I'm confident he will take good care of me.
October 18, 2021
Excellent Doctor and experience. Dr. Oang and his staff treat patients with care , respect and professionalism. Your health is in the best hands when you come to this health care team.
October 14, 2021
At 84 to find a physician who is caring, listens to you and points you in the right way is rare. This Doctor and staff are outstanding
October 13, 2021
Doctor. Sy Oang is very professional, very honest. And I like his bed side manner because he always seems to point me in the right direction, when I have a problem.
October 13, 2021
efficient employees
October 11, 2021
Always a pleasurable visit with Dr. Oang and his staff.
October 11, 2021
Best doctor I've had in a while. He listens and explains things so I understand.
October 08, 2021
Dr showed concern and referred other specialists for continued care
October 06, 2021
I don't want another doctor that is just awesome. He is good. He treats you with respect. And he listens to you. And like I say, he is hard a good doctor's hard to find. So we just love him and he takes care of my family as well. Thank you. Bye. Oh, maybe appointment scheduling. I know, he's kind of busy. That's why. But, but He's awesome. Thank you. Bye.
October 06, 2021
I'm so happy that Dr. Oang is my physician. I have faith in what he says...even if I don't want to hear it!
October 06, 2021
Dr. Oang always explains very thoroughly in a very relaxed & respectful manner.
October 04, 2021
October 04, 2021
Terrific doc
October 04, 2021
Dr Oang and staff were professional and kind always. Dr. Oang is a Great Doctor and a good man.
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