Sy Oang DO - PIH Health

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Sy H. Oang

Sy H. Oang, DO

4.9 / 5 (based on 266 Reviews) View 112 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

March 05, 2020
Dr Oang is a great doctor and I highly recommend him.
February 26, 2020
Yes of course !!
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
August 02, 2019
July 30, 2019
Friendly, concerned, knowledgeable. Positive life-impacting medical care. Already referred my Mom to Dr. Oang. She is now also a patient of his. Would recommend him to anyone.
July 29, 2019
He has been my doctor for many years and totally trust him.
July 26, 2019
Always treated with great care and respect when visiting Dr. Oang, he's never rushed and listens to his patients.
July 25, 2019
He was ver attentive and paid attention to my concerns, overall best doctor I've seen so far
July 24, 2019
Only thing I can say it's very hard to get appointment with your doctor. That's a out it.
July 24, 2019
Excellent care
July 22, 2019
I would and have recommend Dr Oang to family and friends for his professional and knowledgeable interests for his patients.
July 22, 2019
I have had this physician for many years.
July 19, 2019
Great doctor
July 19, 2019
Dr. Oang is a great Physcian! I have been seeing him for 20yrs and couldn't be happier with him.
July 19, 2019
Dr Sy Oang is the best and I highly recommend him. He truly cares about his patients.
July 17, 2019
Dr. Oang is very attentive and a good listener. He generally spends the amount of time necessary to address my concerns. I never feel as if I'm taking too much of his time.That isn't always the case with some physicians.
July 11, 2019
Great doctor. I've had him for a number of years.
July 10, 2019
Great doctor.
July 08, 2019
The office staff, nurses and doctor are attentive and professional.
July 05, 2019
Dr Oang is an excellent medical provider. Listens to my concerns and explains well.
July 03, 2019
Dr. Oang very thorough and also cares a great deal about his patients.
June 28, 2019
Dr. Oang is a excelent Dr.
June 03, 2019
Highly recommend to everyone. A very professional
May 29, 2019
Dr Oang has always been a superb physicians who listens and knows exactly what my healthcare needs are. He is thorough and very knowledgeable. I would follow him anywhere to keep him as my Dr. He is professional and very attentive and takes the time to always listen & explains things so that I am comfortable with my care.
May 24, 2019
He listens, he gets help for you if you need a specialist. Always follows through.
May 20, 2019
Dr. Oang is an excellent Doctor! Cares & is so knowledgeable! He and his whole staff is great!!!!
May 15, 2019
Dr. Oang is a very kind and gentle dr. I switched from another provider in the group and I am very happy with my choice.
May 15, 2019
Dr Oang is simply the best.
May 13, 2019
Dr. Sy Oang is wonderful physician and I always feel well cared for.
May 13, 2019
May 10, 2019
Dr. Oang is an excellent doctor. He took time as always to listen to my concerns and provided immediate plan of care for what he would do to help resolve my issue. In my case he gave me answers to my questions and ordered an MRI for my issues with a follow up
May 08, 2019
That he is the best!
May 03, 2019
Very caring doctor
May 03, 2019
Outstanding care and expertise. Dr. sy Oang genuinely cares about our health and wellness.
May 02, 2019
Facilities were so clean, Staff so polite and professionalKeep doing what you are doing
April 29, 2019
Awesome dr. And staff
April 22, 2019
That I trust dr Oang completely As a Provider he is genuinely concerned for his patients health He shows me results of my lab work where I stand and where I should be and what I need to do to accomplish better health I'm thankful he is my provider in all my years with PIH he has been the best Dr I have ever had and I do recommend him to my friends family neighbors I just hope he doesn't get so busy I'll have to wait months to see him ??
April 22, 2019
Choose this doctor
April 10, 2019
He is a very good Dr. He is very knowledgeable and he has a fantastic manner. He is very easy to talk to and understand -
April 08, 2019
He is very friendly, so far I'm satisfied w/ Dr. Oang
April 08, 2019
He is a good doctor. He went through all my health history.
April 05, 2019
Dr Oang is the best!! Zero wait time to see the doctor..Dr Oang was very thorough and took his time ( I never felt rushed)..he even personally made a follow up call to check on me.. what more could you want!
April 04, 2019
Dr. Oang is the best doctor. He always knows what the next step is regarding my health.
April 04, 2019
Dr. Oang is an excellent doctor!
April 04, 2019
Dr Oang treats you like a family and spend enough time to address your concerns; also you feel very comfortable asking him anything that you wont feel like wasting his time.
April 01, 2019
Dr. Oang is wonderful, very personable, takes time to thoroughly explain lab results, answer questions & address meds/health concerns. Great listener. He & staff are very responsive to messages via the PIH portal and/or phone as well.