Sy Oang DO - PIH Health

Skip to Content

Sy H. Oang

Sy H. Oang, DO

4.9 / 5 (based on 252 Reviews) View 87 Comments

Make an Appointment

Online scheduling is available - Sign up now


View my video

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

December 31, 2020
Dr. Oang is personable and very easy to talk to. He does his research and knows your medical details before he meets with you. I thoroughly trust his medical advice.
December 30, 2020
Provider is great listener and understands my issues.
December 28, 2020
Dr. Oang always provides outstanding care at every visit. He is extremely professional, knowledgable, listens carefully to my concerns, and takes his time when explaining everything. I am truly grateful to have Dr. Oang as my doctor.
December 28, 2020
I love my doctor and his staff.
December 18, 2020
Nothing everything was great.
December 17, 2020
Dr. Oang is awesome.
December 16, 2020
Dr. Oang is a very thorough and caring provider our family has been in his care more than 20 years.
December 14, 2020
He has been my doctor for several years and also my father's doctor so we have a long history and never an issue in all these years. I am very grateful for his care and his thoroughness when dealing with my health.
December 14, 2020
Great! Dr. Oang is a great Doctor.
December 10, 2020
December 07, 2020
This doctor took care of all my needs he is an awesome doctor
November 27, 2020
He is focused on me was not distracted with other concerns. Is Friendly and very knowledgeable. Remembered me even though I hadn't seen him in a while.
November 27, 2020
This provider name is Dr Oang. He is simply the best. He cares.
November 19, 2020
They take great care of their people.
November 18, 2020
I would and have recommended him to everyone. a true doctor of the people.
November 16, 2020
Great Doctor!
November 13, 2020
Dr. Oang is amazing! He keeps on top of my medical issues/history, contacts me with concerns and is always proactive. I trust him completely and follow his medical instructions and suggestions.
November 12, 2020
Dr Oang listens to you and takes action to address your concerns. He cares about his patients.
November 12, 2020
Dr. Sy is the BEST and the staff is great - friendly and courteous!
November 11, 2020
good under standing doctor,listens .thumbs up
November 06, 2020
November 04, 2020
Dr Oang, I don't have the need to go the the doctor that often but he always remembers me, Always like seeing an old friend.
October 29, 2020
Great Doctor , willing to spend time and list to your questions and needs
October 28, 2020
It is always a pleasure seeing Dr Oang, I truly believe he has the best interests of his patients.
October 14, 2020
Dr. Oang is an excellent Doctor. I praise him to everyone I see. He always know exactly what to do to keep me healthy.
October 05, 2020
He's the Best, and I'm glad he's my Dr., and rest of my families Dr. . They should all be as thorough and friendly as he is, he's one in a million!
October 02, 2020
Dr. Oang continually provides me with the best medical service. He always provides information that will help me and family members get or stay healthy. Dr. Oang is a nice, sincere and funny doctor. He's the best doctor ever!
October 02, 2020
Dr. Oang is the best. He always takes time to listen to my concerns and is very thorough in his assessments. Thank you for being so thoughtful and caring!
September 23, 2020
Dr.Oang is great
September 18, 2020
Most definitely!!!
September 18, 2020
pih provides excellent health service
September 18, 2020
Dr. Oang at PIH is the best! Family has been seeing him for years.
September 11, 2020
PIH Doctors and staff truly care about their patients. I highly recommend coming to see them for any and all medical issues/concerns that you may have. They provide the best of care.....
September 09, 2020
See him.
August 27, 2020
Dr. Oang is friendly and funny. He knows how to make you feel comfortable and shows he cares about your health.
August 24, 2020
I liked Dr. Oang's personality and his friendliness.
August 21, 2020
Dr. Oang spends the time to discuss my medical condition and any options to address matter at hand. I always feel like he listened to me and I leave satisfied with the answers and direction for addressing my medical needs. Every chance I get, I recommend Dr. Oang to my family and friends.
August 14, 2020
Dr. Oang is highly knowledgeable. I have complete trust in his judgement and clinical skills. I would highly recommend him. He is also a compassionate doctor.Please feel free to use my feedback online.
August 07, 2020
Friendly and helpful.
August 06, 2020
He was courteous and professional
August 06, 2020
Very personable and friendly.
August 05, 2020
Dr.Oang is very personable and easy to talk with. He will take his time to listen to your concerns. He is very thorough.
August 03, 2020
You will not regret having Dr. Oang as your doctor.
July 23, 2020
He address all questions patiently and allow you to make your own decision.
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