Sy Oang - PIH Health - Whittier, CA

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Sy H. Oang

Sy H. Oang, DO

4.9 / 5 (based on 306 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.


15725 E Whittier Blvd #500
Whittier, California 90603
  • Main: 562.947.3307
  • Fax: 562.943.1090

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

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
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.
September 17, 2018
Great experience.
September 14, 2018
Dr. Sy Oang will always be patient and took his time to diagnose your health. He never leave any questions unanswered. He is one of a kind doctor that now-a-day is rare to find. You'll leave his office without feeling neglected or waste of time.
September 07, 2018
I would definitely recommend not only my Dr. Oang but his staff as well. Very professional and helpful staff!
September 07, 2018
Amazing, caring, intelligent MD! Highly recommend
August 30, 2018
Dr. Oang takes the time to listen. He takes his time to answer all your questions and/or concerns. Extremely thorough in his examinations.
August 30, 2018
I cannot think of another doctor that provides me with the care Dr. Oang has given to me over the years.
August 21, 2018
He is wonderful!
August 20, 2018
Always have a good experience with my doctor
August 15, 2018
I was happy
August 15, 2018
August 14, 2018
Exactly the Dr I have been looking for. Dr Oang was very attentive to all my questions and concerns. He is my husbands PCP and always speaks about how he loves his Dr. and I see why. Already looking forward to my follow up visit.
August 14, 2018
He is the greatest Doctor. He spends time with you and explains everything so that by the time you leave you feel reassured that you are in good hands.
August 13, 2018
He’s very thorough and extremely competent with a great knowledge about your medical needs.
August 10, 2018
I would recommend him to them.
August 07, 2018
Dr. Oang is the best doctor we have ever senior citizens, our health has never been this well, he is patient, knowledgeable, caring, and professional in all he does. We feel extremely confident that we are in good hands Thank you, Dr. Oang.
August 06, 2018
Excellent physician.
August 06, 2018
I think he cares for his patients.
August 06, 2018
I tell people that I carry Doctor Oang's picture in my wallet andwhenever I am away and do not feel well I look at his picture withhis smiling face and my troubles disappear.
July 30, 2018
that when you get to your appt, all service personnel are pleasant and helpful...the problem is actually seeing your primary care doctor when you need to.
July 26, 2018
Dr. Oang is very knowledgable, pleasant and professional.I recommend him to everybody.
July 25, 2018
I have seen Dr. Oang for more than 20 years.
July 24, 2018
Dr. Oang has been my internist for a number of years. He shows concern for my well being and communicates well when I have questions. He also responds to my emails in a timely manner whenever I have a concern. Dr. Oang has a pleasant personality and acts professionally during my visits.
July 20, 2018
Informative, quick, friendly and remembers how you and your family were doing on the last visit.
July 19, 2018
Very friendly, good listener, and yes I have recommended many people! Woman at front desk were very friendly and helpful. Dr. Oangs nurse was very Good!!!!!
July 19, 2018
I felt very comfortable with Dr. Oang & confident of his knowledge experience.
July 18, 2018
Great doctor. Made me feel at ease and that he genuinely cares about my health and well being. Went to see him looking for a new primary primary doctor. After the great visit, definitely going to make him my primary doctor and have already recommended family members to him.
July 17, 2018
Doctor is respectful and does not sugar coat any concerns. Always listens to what i have to say and provides me with as many possible solutions that he can. Great Doctor!
July 13, 2018
Dr. Oang is a excellent Doctor and has taken good care of me!
July 12, 2018
Go find the best and it is Dr Oang
July 11, 2018
Dr. Oang is a great doctor
July 09, 2018
That my Dr takes is time with every patient and if yo dont understand all you need to do is let him know and he will explan it in a different way then ask if you understand. Before he moves on to another question
July 09, 2018
Primary Dr is very good Dr & Care more Ins is good for us.
June 28, 2018
He shows genuine interest in performing his duties I a caring and compassionate way. I feel quite at ease being in his care.
June 28, 2018
He is knowledgeable, caring and truly does everything he can for his patients.
June 26, 2018
So happy he is our family doctor, he is the Best & we recommend him to our friends & Family!!!
June 25, 2018
excellent facility.
June 14, 2018
Dr. Oang is outstanding! He goes above and beyond to provide the best care for his patients.
June 11, 2018
Dr. Oang was very thorough and patient. I would love for the rest of my family to see him.
June 05, 2018
Great doctor.
June 04, 2018
Dr. Oang has been taking excellent care of us for many years! We think he is and outstanding doctor and person!
May 29, 2018
Dr Oang is fabulous. He is caring and understanding. I have several friends that have Dr. Oang as their physician and we all agree he's great.
May 24, 2018
Dr Oang is awesome. He is the best primary care doctor I’ve had in a while. I trust his medical knowledge and he has always provided excellent care
May 22, 2018
Great provider.
May 21, 2018
He is a GEM!!! Spends time w me and listens to all my concerns.
May 16, 2018
I have already told my family that Dr. Oang is a great doctor. I have recommended him to my friends, as well.
May 11, 2018
He calmed my fear, immediately when he walked in the door hehad a smile on his face, that made me smile too. His tone of voice, his words rest assured me there was nothing wrong afterall & said he could understand my concerns & was glad I made an immediate appointment. Dr. Sy was wonderful!
May 10, 2018
May 07, 2018
He is a very good doctor; he listens and informs and I wish to keep him as my primary doctor for as long as possible.
May 04, 2018
He’s great! I just wish it wouldn’t take so long to get an appointment.
May 02, 2018
He is an excellent dr. Always very busy
May 01, 2018
I recommend Dr Oang highly!
April 30, 2018
This Doctor is competent, aggressive with treatment and genuinely cares about his patients.
April 27, 2018
PIH medical staff is top notch. Dr. Sy Oang is a caring and talented physician!
April 26, 2018
Yes, We already are recommending him to all the people we know that use PIH
April 24, 2018
Always listens to you and makes sure you get the care that you need. I hope he never retires.
April 17, 2018
He's a caring and thoughtful who seems knowledgable on a range of issues.
April 11, 2018
Dr Oang is a one of a kind doctor. All doctors should be more like him
April 09, 2018
He is the best.
April 09, 2018
He is a pleasant doctor and an interesting conversationalist. I enjoyed my first visit with him very much.
April 06, 2018
Dr. Oang listens and doesn't treat you like a text book patient.
April 05, 2018
He listens, relates to what you are saying and helps get to the issues.
April 05, 2018
If I have problems w/my health, he will send me to specialist on the spot.
March 30, 2018
Doctor was EXCELLENT, but his nurse was NOT.
March 30, 2018
Dr. Oang is awesome. He's always encouraging, fair, and tells it like it is!
March 21, 2018
Very friendly and knowledgeable
March 19, 2018
Dr Oang is one of a kind practitioner. He truly cares about his patients and takes the time to explain everything very thoroughly. More Dr’s should learn from his expertise. He always provides exemplary service. Happy to have him as our family practitioner.
March 05, 2018
Friendly, outgoing, relaxed, knowledgeable, easy to talk to, helpful.
March 05, 2018
Dr. Oang is incredible! I have been seeing him for 18 yrs and remain exceptionally satisfied. There is none better!
March 01, 2018
Dr Oang is a one of a kind Doctor. He is very professional and actively listens to what your concerns are. The treatment he provides are well thought out and on point. I would definitely recommend him to family and friends.
February 28, 2018
Dr Oang is the best dr i have ever been too! He is the reason i will be staying with PIH. I hope the other drs staffed can learn from him
February 26, 2018
Very good.
February 23, 2018
Very caring!
February 23, 2018
none at this time
February 16, 2018
Dr. Oang was very comfortable for me and dealt with me directly and clearly.
February 14, 2018
Would love to go back to see dr. Oang when I’m not feeling good not other drs!
January 15, 2018
Dr. Oang is great!
January 12, 2018
He's very friendly. Asks questions, approve achable and knowledgeable.
January 09, 2018
Dr. Oang is amazing! I recommend him to anyone who is looking for a new doctor. He is so caring and knowledgeable, he is fantastic!
January 08, 2018
Best doctor ever
January 03, 2018
Dr. Sy Oang is knowledgeable, very helpful, encourages me to take better care of myself. He recalls talks that we have had on previous visits. He cares.
January 03, 2018
very good Doctor I have been going to doctor Oang for years
December 19, 2017
Dr. Oang always takes time to listen and very knowledgeable.
December 18, 2017
I would tell them to switch to PIH as long as they are fortunate enough to have Dr. Sy Oang as their PCP.
December 15, 2017
All good. Friendly, thorough.
December 14, 2017
dr. oang was thoroughly prepared and knew all of my health records before he saw me. i really appreciated that, so i would not need to explain. he asked appropriate questions and helped i and my husband make informed decisions. he was caring, compassionate and listened intently. i truly appreciated his care and concern and professionalism!!
December 12, 2017
This provider shows honest an consideration at all times concerning my health issues.I feel lucky to have this provider dealing with my health and health history.
December 12, 2017
Very attentive, caring, and very professional.
December 07, 2017
This provider is excellent in the knowledge of giving care to his patients. You would be very fortunate to have this person on your side.
November 27, 2017
He is friendly and attentive. He wants to treat the overall patient. I will feel comfortable seeing him again.
November 20, 2017