Sy Oang DO - PIH Health - Whittier, CA

Skip to Content

Sy H. Oang

Sy H. Oang, DO

4.9 / 5 (based on 255 Reviews) View 113 Comments

Make an Appointment

Online scheduling is available - Sign up now


  • Group
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 Physicians

PIH Health Hospital - Whittier





  • 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 IPA # - IPA0686GH

  • CareMore - 100000000607

  • 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

August 28, 2019
Dr. Oang is great, highly recommend
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.
March 27, 2019
Dr Oang has been a family doctor for many years! He is a very valuable member of our family!
March 27, 2019
Dr Oang is the most caring doctor one could wish for. He's very thorough and informative and empathetic.
March 22, 2019
Great bedside manner, explains everything, knows his business
March 15, 2019
Great Dr. also like his personality.
March 08, 2019
Love my dr !! Wil recomend any time
March 01, 2019
Best doctor ever!! His qualities are endless !!'
February 27, 2019
He is a wonderful Doctor !
February 04, 2019
Very good service and great attitude of employees, Kind and courteous and always helpful.66
February 01, 2019
I love Dr. Oang!!! Best doctor I have ever had.
January 25, 2019
The entire staff is helpful and friendly.
January 25, 2019
Dr. Oang is a wonderful and skilled physician.
January 24, 2019
The doctor was compassionate, very knowledgeable, spent time listen to my medical issues and look into my medical history, thoroughly answered and explained plans to treat my medical conditions.
January 24, 2019
Very good Doctor excellent service and very good communication
January 17, 2019
We recommend Dr Oang to all our family and friends. He is a very caring doctor. He is an asset to PIH
January 14, 2019
////////caring, concerned helpful cant always get into see doctor when needed
January 14, 2019
I've been with Dr. Oang for well over 20 years and have do desire to change. He has provided me with the best care all this time without ever leaving me wanting for more from him. He is great!
January 09, 2019
Dr.Oang was efficient, informative, and got right to the heart of my virtigo problem. He provided me with a set of exercises that have benefited me immensely..
January 03, 2019
Dr was kind and showed he wanted to bring restored health
December 17, 2018
December 14, 2018
December 10, 2018
Dr Oang spent an ample amount of time with me, and was very pleasant. the entire staff that we reacted with was wonderful.Thank you.
December 07, 2018
Provider was able to see me the same day I called in. I expect that type of service from my health providers and they delivered.Excellent service ,PIH has a very efficient system and a most courteous attentive staff.
December 06, 2018
See Dr Oang.
December 03, 2018
He was very thorough and friendly, making me feel important
November 30, 2018
yes, I will tell my friend about this doctor is very nice. the only concern that I have is try to get appointment with the doctor is very hard.
November 30, 2018
Dr. Sy Oang is caring, understanding, and knowledgeable. You really feel like he listens to you.
November 30, 2018
Dr. Oang is a kind, caring and extremely knowledgeable doctor.
November 29, 2018
November 28, 2018
He's the best doctor ever!
November 23, 2018
Stop going to Kaiser and switch to PIH and live your best life. Good Job PIH!
November 21, 2018
Dr Oang is very personable, answers questions, good diagnostition
November 15, 2018
Dr. Oang is excellent. He is an amazing doctor. Passionate, knowledgable, so smart, really cares & helps beyond the appointment. He is giving & kind & never misses anything. I feel so blessed to have him as my primary.
November 15, 2018
Dr. Oang is friendly, funny, and makes me feel comfortable at every visit. I highly recommend him.
November 14, 2018
Dr Oang is very very thorough and patient
November 07, 2018
I've known PIH since I was a child, my child was born here, my mom has had heart surgery, and now I'm dealing with my own heart problems, I chose PIH because I trust them.
November 05, 2018
The BEST doctor I ever had!
November 02, 2018
I would let them know that my waiting time was less than five minutes in the lobby and in the exam room. Dr Oang was especially considerate of my comments and questions.
October 31, 2018
Dr. Oang has an excellent bedside manner. He is very thorough and his diagnosis are always right on. My family and I have been patients for many years and we trust in his judgement. I could tell Dr. Oang does a lot of research because his explanations and recommendations clarify condition and path forward. He does not hesitate sending his patients to specialist if he feels it is required.
October 29, 2018
Dr. Oang is thorough with your examine and explaining how you can improve your health journey to be the best, healthiest YOU! He and his staff offer tips and continually offer encouragement. I worked hard to achieve the best me possible, and I was never alone. No more insulin got rid of 4 or more pills per day and lost 40+ lbs. And NO back pain, I have Spinal Arthritis. I'm now able to walk 40 or more miles per week! HAPPY PATIENT. Dr. Oang is the BEST!!!!!
October 24, 2018
Dr. Oang really cares and listens to his patients. He's respectful, kind, and professional. Thank you, Dr. Oang!
October 24, 2018
Dr OANG treats you like family and he listens and spend time with you I already recommended him to a few of friends and family and will continue to do so.
October 23, 2018
I would tell everyone.
October 23, 2018
Provider was very thorough and knowledgeable
October 22, 2018
October 19, 2018
Dr. Oang was very kind and thorough. I appreciate the time he spent with me.
October 18, 2018
Dr. Oang is amazing! He deeply cared about my concerns and spent as much time needed to go through everything. He made sure we covered everything, made sure I understood, and is doing everything possible to figure out my health problems. Thank you!
October 18, 2018
Dr Oang is very caring and the best doctor you could possibly have.Period.
October 17, 2018
Dr Oang is a excellent Doctor
October 17, 2018
Dr Oang is very nice and makes you fell comfortable. Gave me good advice. The whole staff was great. Pre-filling from helped out in time greatly
October 15, 2018
I recommend it
October 15, 2018
October 15, 2018
Outstanding doctor and staff
October 11, 2018
Dr. S.Oang is great in every respect a client might hope for!
October 11, 2018
Excellent physician Answered and address all concerns
October 11, 2018
Dr. Sy Oang is very knowledgeable, respectful, patient and provides excellent service. At least 10 members of my immediate family are seen by Dr. Oang and not one of them has anything negative to say!!!!
October 01, 2018
Dr Oang took his time to listen to me. Personal issues that has been bothering me and effecting my health
September 28, 2018
Good, caring doctor.
September 27, 2018
Dr Sy Oang is a kind compassionate man. He is an excellent listener, but will tell you like it is. He provides options and will follow up.
September 27, 2018
Dr. Oang is the best. He cares and he is so knowledgeable. My favorite physician ever!
September 24, 2018
I have been with Dr.Oang for over 20 years. He is one of the best.
September 24, 2018
Dr. Oang is a great doctor. He is highly knowledgeable and puts his patients first. He is always a doctor that takes the rights steps before ever assuming. I highly recommend him!
September 21, 2018
Dr. Oang ia a great doctor.
September 21, 2018
He listens to you and explains everything. He is one of the best doctors in the group.