Sy Oang DO - PIH Health

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Sy H. Oang

Sy H. Oang, DO

4.9 / 5 (based on 269 Reviews) View 104 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.


15725 E Whittier Blvd #500
Whittier, California 90603
  • Main: 562.947.3307
  • Fax: 562.906.5541

Hospital/Group Affiliation

PIH Health Whittier Hospital

PIH Health Physicians





  • Internal Medicine


  • Cambodian



Michigan State University-Sparrow Hospital (Lansing)


Michigan State University College of Osteopathic Medicine (East Lansing)


Internal Medicine (General Cert)


Accepted Insurance Plans and Physician ID Numbers

  • Aetna - 5984206

  • Anthem Blue Cross (paper/online enrollment) - 0AF117

  • Anthem Blue Cross (Phone Enrollment) - 0001117

  • Blue Shield - 020A66731

  • Blue Shield 65+ - 8I0023

  • Blue Shield IPA # - IPA0686GH

  • Cigna - 7436506

  • Health Net - 3368-047962

  • Health Net Senior - 5162-047962

  • Humana - 227582

  • United Healthcare - 0232470040

Accepted insurance plans are subject to change without notice. Please contact your insurance provider and the doctor's office to verify your coverage.

Patient Reviews

July 22, 2020
Dr. Oang is an AMAZING doctor. He's knowledgeable, patient, kind,polite & I know I'm well taken care of with him as my doctor. THANK YOU for all you do Dr. Oang
July 16, 2020
We have been patients with Dr Oang for many years! He is caring, diligent, and professional! He is an exceptional doctor that we are pleased to have taking care of us!
July 13, 2020
This provider is very conscientious and very knowledgeable about his job applications for his patients. There is no problem with his ideas on the treatment that i need.
July 10, 2020
Always caring and giving of his time.
July 08, 2020
Dr Oang is great! He really listens & helps. So great his knowledge of medicine. Best doctor I ever had!!!
July 06, 2020
Dr Oang is a great Dr. Always listening and explains well
July 06, 2020
I had a physician I respected and trusted for over 20 years, and have spent several years looking for a PIH primary care physician I trusted and felt as comfortable with. I feel very fortunate a co-worker recommended Sy Oang, MD. Even though this was the first time we met, he had obviously reviewed my medical record and, despite my having done extensive research on my medical conditions, Dr. Oang gave me very helpful information that will help me better control my heath. Thank you Dr. Oang!
July 06, 2020
Very thorough and professional, best care possible.
June 16, 2020
Dr. Oang is the best and he lets me know what to do and explain everything. Very good dr.????
June 15, 2020
He's a good doctor that's why I'm back!
June 11, 2020
Dr. Oang is helpful, friendly and clear. I love his attitude and his knowledge.
June 04, 2020
Dr oang is a awesome dr, and really cares for his patients. Thank you
June 02, 2020
I have a dr who is there for there dr needs
June 01, 2020
Front office well run. Dr. Oang is an accessible and caring professional. One's file is up to date and the doctor is aware of your information. He was recomended to me by a trusted source and I will do the same.
June 01, 2020
Another excellent physician at PIH, we are so fortunate to have such excellent doctors available.
May 18, 2020
Best doctor ever
May 15, 2020
Yes indeed!
May 11, 2020
Dr. Oang is awesome. Always explains things thoroughly in a professional and sincere manner. He's a good listener and has a great personality too.
May 11, 2020
Dr. Oang is by far the best!!!!!
May 06, 2020
The Dr. and staff are the best. They are kind and helpful and caring, very compassionate. I feel myself very fortunate to be ableto have them for my caretakers.
May 01, 2020
That he is real concerned about people's well-being explains things very well he listens to our needs and working very well together makes you feel comfortable so we are able to speak to him
May 01, 2020
I like dr oang... this appt was useless.
April 30, 2020
DR. Oang and I had video chat for about 25 mi. next day his staff called and made me new appointment. great team work.
April 24, 2020
Great doctors, nurses specialists technicians and staff. Great hospital...I would be lost with out you. All my current local family are PIH clients
April 23, 2020
The doctor was fairly thorough when going through my medical history to determine the next steps in the process of my medical problem.
April 23, 2020
Not much to say about a telephonic visit.You may share.
April 23, 2020
My Doctor is awesome.
April 22, 2020
I have shared with friends and family that I am completely satisfied with the efficiency of my visit to the doctor, from the moment I called the on-call nurse (who was extremely helpful) and walked up to the medical office until the end of my visit.
April 06, 2020
Kind and attentive Dr.
March 30, 2020
The doctor kindly reiterated discussions of prior appointments that I had forgotten, and gave me a clear course correction.
March 20, 2020
PIH made an incredible decision in hiring Dr. Oang. For peace of mind, there is no one better than Dr. Oang's ability to diagnose. Thank you!
March 12, 2020
It was a Great Visit
March 11, 2020
I am glad I have found the doctor. He's one of the best and a very caring doctors. I recommended him to my family.
March 05, 2020
Dr Oang is a great doctor and I highly recommend him.
February 26, 2020
Yes of course !!
February 12, 2020
February 07, 2020
I have already referred my brother to Dr. Oang and my brother is very pleased with him.
February 06, 2020
February 05, 2020
Dr. Oang is informative, a good listener, a good counselor, and looking out for my best health.
January 31, 2020
I did tell a friend that I think she would like him especially since he's an osteopath and trained in internal medicine. He was also pleasant.
January 31, 2020
Dr Oang is very attentive and has a great bedside manner. He's thorough in his explanation of any treatment or information about your visit necessary. I'm very happy that I chose Dr Oang as my primary physician.
January 30, 2020
January 27, 2020
Dr. Oang is very knowledgeable and best at his profession
December 30, 2019
Dr was very engaged and informative with a warm and caring persona. Very pleased!
December 30, 2019
Once you build a relationship with this doctor, he will give you an undivided attention for all your medical concerns. He does not rush you out like most doctors do. He answers to all your questions and concerns. Even before he finalized the visit, he would asked again if I have any other health concern(s) before leaving the office room. Very very blessed to have him as my doctor. My health went from horrible to 95% if not 99% improved. Thank you so much.
December 27, 2019
Best Doctor I have ever had.
December 26, 2019
Totally satisfied with Dr. Sy Oang
December 23, 2019
Dr. Oang is a very good doctor.
December 20, 2019
He is a good doctor he gave a lot of time and he explained very good about my health
December 20, 2019
Dr. Oang is a very caring physician. He is always helpful and shows interest and concern. I have been very happy having him as my primary.
December 18, 2019
He is a great doctor
December 16, 2019
He listens carefully and provides excellent care for my health
December 16, 2019
Dr. Oang always listens to my concerns and is able to explain the medical problems and why. He is very thorough in his exams and if any doubt he will refer or request additional test. I am always confident that Dr. Oang is able to help me.
December 16, 2019
I have been with dr. Oang for many years. He knows my medical history. He is very professional. I feel very comfortable talking to him about medical and personal issues that I have.
December 13, 2019
Dr. Oang always makes me feel comfortable and makes sure he spends enough time with me.
December 11, 2019
I'm not telling them he's already too busy!!! ?? He's great. ??
December 11, 2019
Even without the computer system Dr Oang improvised and he knows his patients so well that he knew what my special needs are. He still examined me and took notes to input later on. He's a very professional, kind and knowledgeable Dr!!!!
December 05, 2019
Very friendly & caring. Took time to explain everything and answer all my questions.
December 04, 2019
He's been the best Doctor I've ever had!
December 04, 2019
Outstanding in every way.
December 02, 2019
Excellent as always !!
November 26, 2019
He is a good doctor and he listen and understand my problems.
November 25, 2019
Dr. Oang is a caring physician who has his patients well being at his heart.
November 18, 2019
Dr Oang is very smart and professional Kind and personable It's easy to speak to him and I trust him with my health
November 14, 2019
Very caring and detail oriented.
November 11, 2019
Dr. Oang is the BEST! He is a good listener, always talks to me about what I can do to be the healthiest me I can be. Encouraged me and gave me the tools needed to manage my diabetes without meds!!!! No more Insulin!! I feel great and have lots of energy to keep me going all-day. Grateful, and blessed patient. PIH provides its patients with excellent health care providers that work together for the patient's overall health, God bless us all
November 08, 2019
My doctor is so popular that it is hard to get a make up appointment right away. That's how good he is!
November 08, 2019
Dr. Oang is kind and courteous and takes the time to listen to his patients. I never feel rushed or overlooked when, he has been an ally in my health regimen for over 20 years
November 07, 2019
Dr. Oang is a outstanding doctor, i will never change doctors.
November 04, 2019
He is very caring and listens carefully. He makes you feel confident in his information and diagnosis.
November 04, 2019
Dr. Oang is very thorough and knowledgeable. He will also call you himself with results of tests.
October 31, 2019
great doctor
October 25, 2019
Doctor Oang is a very caring and thoughtful and thorough doctor. He is the best doctor we could hope to have!
October 24, 2019
Listens to you, does not rush you,always happy and smiling!??
October 21, 2019
Dr Sy Oang is the best physician I've encountered. He puts you at ease with his professional yet engaging personality.
October 21, 2019
Good doctor
October 15, 2019
We think very highly of Dr Sy Oang and have told others of his exceptional care of both of us!
October 10, 2019
Dr. Oang consistently gives correct diagnosis and treatment. I wish Dr. Oang could be available for every patient.
October 09, 2019
When you see Dr. Oang you know you're seeing the very best doctor. Knowledgeable, caring, professional, ethical.
October 09, 2019
I highly recommend this provider. He is very attentive and proactive. His staff is professional
October 04, 2019
He needs to make more time for his patients. He needs to review medical records/medical history, needs to LISTEN and not interrupt. He makes one feel we are taking up his time and then rushes one out of the office cuz "he's running behind". Not current patient fault he is running behind. I always think it will get better on next visit but it does not...
October 04, 2019
Dr. Oang is a doctor who has a genuine care for his patients. I really feel like he listens.
October 04, 2019
I've had such positive experiences with everyone I've seen in this office. Thank you!
October 03, 2019
Best doctor I've ever had
October 03, 2019
Try calling PIH to schedule an appt is like banging your head to a wall. Scheduler will not help unless coming to doctors office and come face to face with one .orthopedic scheduler is the worst had to wait 31 minutes on the phone and still can not get an appt w/doctor
September 30, 2019
The good doctor is the best doctor I've ever had. Very engaging and professional.
September 30, 2019
Good medical providers thank you.
September 27, 2019
Dr. Oang listens and responds to my questions with empathy and knowledge. He makes me feel comfortable enough to ask him even the simplistic questions. He is knowledgeable and caring.
September 25, 2019
Dr. Oang is fanstastic!
September 23, 2019
Dr OANG treats you like a family and really cares for you and listens and very helpful we love him ...
September 23, 2019
September 23, 2019
Dr. Oang is an excellent doctor. I couldn't be happier.
September 11, 2019
September 09, 2019
I would rather not share my Dr with others!!
September 09, 2019
Very good Doctor takes time to explain.
August 28, 2019
Dr. Oang is great, highly recommend
August 23, 2019
My urologist is Dr. Oang's patient and told me he respects his knowledge and care he gives him. You will not find a better primary care doctor anywhere.
August 22, 2019
The doctor keeps track of my test results and calls to talk or to make an appointment.
August 21, 2019
We love Dr. Oang, but he is very hard to get in to see!
August 19, 2019
Everything is great don't change a thing.
August 16, 2019
Dr. Oang was the doctor I had selected to attend my Mother during the last five years of her life, while she was living with me. In that regard, he had earned my respect and admiration, and so after Mom's passing, I have continued with him as my own general practioner.
August 15, 2019
Kind and caring.
August 14, 2019
I was really in bad health, I really appreciate how well the staff treated me during my visit at the office. Everyone was so sweet and caring, all I can say is THANK YOU! From the moment I entered, through the chest Xrays and the blood labs, everyone was very kind. Thank you sooooo much!!! I don't ever want to be sick like that again.
August 12, 2019