Sy H. Oang

Sy H. Oang DO

Specialties:

Internal Medicine
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4.9 / 5 (based on 359 Reviews) View 103 Comments

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562.947.3307

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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.

Office Information

Hospital/Group Affiliation

PIH Health Physicians

Profile

Gender

Male

Specialties

  • Internal Medicine

Additional Languages

  • Cambodian

Education

Medical School

Michigan State University College of Osteopathic Medicine (East Lansing)

Internship

Michigan State University-Sparrow Hospital (Lansing)

Residency

Michigan State University-Sparrow Hospital (Lansing)

Video

Patient Reviews

April 20, 2026
Very happy with my doctor.
April 20, 2026
Staff always professional, polite and caring, Doc always answers any questions that I have e and explains what Teat Results mean
April 17, 2026
Most doctors should be exactly like Dr. Oang. He's very professional. His nurse, (name removed), is the greatest, very professional, very attentive, and always very caring. And I wish more doctors were like him. He's a great doctor.
April 17, 2026
Dr. Oang is a great doctor! His knowledge and help and expertise has blessed us beyond words! The best doctor we have ever had the privilege to be patients of. He more than once has saved our lives with his great skills and knowledge. He is a great doctor and healer! We will really miss him as he gets closer to retirement ! He is the best!!!!
April 15, 2026
Hello, my name is (PHI removed). I have been a patient of Dr. Wong's for about 30 years. I would keep him forever and ever if that was possible. He is a wonderful person. He's a great professional and he's very friendly. I love him. Bye-bye.
April 09, 2026
He is very good and too the point, and very good at what he does we like him & we're going to keep him for a while thank you the (PHI removed) family.
April 06, 2026
Dr Oang, works with me to maintain my health so I can stay active. He and his staff are professional. Friendly and easy to communicate with. I always leave the office feeling great and cared for. I'm a happy patient of my PIH Doctors.
April 01, 2026
The whole team here is attentive as well as considerate. Never have to wait longer than 12 minutes. Nurses are very nice. Dr. is thorough.
March 30, 2026
I definitely like the service and my doctor. It's just too bad that he's retiring, but I'll be able to have him for three years. I appreciate the service. It was well. I'm satisfied. Thank you.
March 26, 2026
I just want to say that Dr. Oang is the best doctor I've ever had. It's the best doctor my wife has ever had. We feel extremely comfortable with him. He spends time. He listens to our concerns. And I think I can't give enough kudos to him.
March 26, 2026
My husband and I have been with Dr. Oang for 33 years and have had the best experience as his patients. He has taken great care of us and we are extremely pleased with his service, time, medical knowledge, recommendations and availability to help treat us with all of our ailments.
March 26, 2026
Dr. Sy Oang is one of the best doctors at PIH. He definitely sets the bar for his professionalism, care, and compassion he provides to his patients, and he is the only reason we have stayed at PIH.
March 20, 2026
I don't want to share Dr Oang with additional patients so no 10 rating!! (name removed) his nurse is awesome as well.
March 18, 2026
(Name removed) and Dr Oang has been taking care of me and my husband for a long time! Very happy with both of them
February 25, 2026
GREAT MAN AND DOCTOR
January 27, 2026
I think Dr. Sy Oang is one of the best physicians I've ever had, met, and dealt with. He's very, he explains things very well. He's very, very, very knowledgeable and gives you insight to some of the most upcoming and current information about health care, my health care. He makes it very patient-oriented. So that's really an important thing, I think, for a physician. He individualizes care every single time. And it's all about you and what your future will behold. And he saved my life. So I think he's excellent with finding a cancer that I had. His office staff is excellent, professional, knowledgeable, and experienced, especially (name removed). And I like (name removed) too, but Michelle is
January 27, 2026
Dr Oang is the Best Dr. who cares about his patients and spends so much time listening.
January 26, 2026
Dr Oang and his nurse (name removed) are excellent service providers
January 26, 2026
great experience
January 23, 2026
Dr Sy Oang is the best,
January 21, 2026
Hello, my name is (PHI removed). Our visit on January 21st with Dr. Wong was, as always, very, very good. We drive two hours to see him and two hours back home. That's four hours to see this doctor. He is that good. He is exceptional. That's all. I can't, I don't think I can say more. He's just great. We love him. Thank you.
January 19, 2026
Been dr Oang's patient for 30+ years trust him completely.
January 16, 2026
Dr. Oang is the best! Very satisfied with him as my PC Provider for years.
January 12, 2026
Professional, knowledgeable and kind staff members.
January 12, 2026
Friendly and professional staff.
January 05, 2026
Dr . OANG is very professional and caring.He answers all my questions
January 02, 2026
I truly trust this physician!
December 31, 2025
Love dr oang and his staff he's on point about my health issues. They are a 10??????
December 29, 2025
Dr Oang is the best! He listens and he explains. Thank you!
December 19, 2025
We have complete faith in Dr Oang and his nursing staff (name removed). Thank you PIH, keep up the great work!
December 17, 2025
Very professional service.
December 15, 2025
Dr Oang is very friendly, professional and knowledgeable.
December 12, 2025
Dr Sy oang and staff are the best.
December 12, 2025
Do Oang is a fine and caring physician.
December 10, 2025
Dr Oang has been my Dr. for many years. He is very open and honest. He does not make you feel rushed and thoroughly listens and explains everything regarding bloodwork results. He is the best!
December 10, 2025
Communication with this office is very good thanks to (name removed). Dr. Oang always takes this time with us and he follow us through with any issues he sees.
December 10, 2025
Great
December 08, 2025
The whole entire staff is wonderful. Thank you so much for taking care of my mom. And I accidentally pressed two for the beginning, thinking that one, yes and no, that's it. So technically, everything should be a four. Okay, thank you. Bye.
December 08, 2025
Dr. Oang always wonderful and knowledgable and answers all concerns
December 04, 2025
This doctor cares for all, all his patients. He listens to us all. He makes time for us all. He's a very good doctor. He's the best doctor I've ever seen.
November 24, 2025
Dr Oang and his nurse are so helpful and caring. Professional and patient! Never feel rushed or treated as just a number!
November 21, 2025
Dr. Oang and his nurse are always so kind and professional. Highly recommend them.
November 20, 2025
Dr. Sy Oang is like my best favorite doctor ever. He's helped my mind. He's calmed me down, not only with the medication, but conversations. He helped my fears for medication because a lot of people said I didn't have faith. And I realized, hey, I need medicine for some things. And I thanked him so much when I seen him the other day. And I just love that doctor. He's my best doctor. And my family loves him too, even though they don't go in personally. Thank you.
November 19, 2025
Dr. Oang has been my long-term primary physician. He's a great, great doctor, great person, takes good care of me. I highly praise him. I highly recommend him. He does a great job. Thank you.
November 17, 2025
We tell our friends of PIH Health and Dr Oang! He"s been our doctor almost from his beginning at PIH! Now, he's only working three days a week! He has saved us from many bad health issues! We admire and appreciate him!
November 12, 2025
Dr Sy Oang has been our Dr since he started practicing! We respect, admire his dedication! He is now getting ready to retire and hope we are still here before he does!
November 12, 2025
I've been with this provider for more than 20 years and don't see a need to go anywhere else
November 10, 2025
Dr Sy Oang , makes you feel like family,
November 07, 2025
Dr. Oang has been my Dr. for 25 years, do you think I would have stayed with him if he wasn't a great man and DR.
November 05, 2025
Office staff are very efficient , and Dr Oang is the best doctor in town.
November 05, 2025
I get the best care.. Thank you to Doctor and staff
November 03, 2025
Excellent profession and caring. Dr. Oang is the best!
November 03, 2025
Great Dr.
November 03, 2025
Dr Oang is probably the best physician that I ever had. If he trained every doctor in Whittier, nobody would ever think of missing their appointment. He's in a class by himself! Nurse Michelle is also to be commended for her kindness and being so professional! God Bless!!!
October 27, 2025
Compassionate Doctor
October 27, 2025
Dr. Oang is great!! He shows interest in what I have to say and explains in a way that I understand.
October 24, 2025
I've been seeing Dr Oang for a couple of years now and trust him with the utmost respect. He takes the time to go over everything with regarding your health and makes suggestions as to future treatments and plans for your health.
October 20, 2025
I love Dr.Sy Oang and his staff, we've been with him 6 years and feel great about our health management with him and his staff. Thank you
October 15, 2025
I have been very content with the operation and how business is conducted at PIH
October 13, 2025
Great doctor, great service!
October 13, 2025
Dr Oang is very personable & easy to talk to. He is very knowledgeable and helpful.
October 13, 2025
Dr. OANG IS SO GOOD TO OUR FAMILY. HE IS THE BEST. LOVE HIM. EXPLAINS EVERYTHING.
October 08, 2025
terrific experience as always.
October 06, 2025
I'm okay!!
October 03, 2025
Dr Oang, explains my labs results and tells me what I'm doing well and what I can change to feel better. Dr Oang and staff are the best team and I'm blessed to have them as my medical team.
October 01, 2025
Love Dr. Oang. He always takes the time to explain everything so i understand; he listens and addresses all my concerns.
September 26, 2025
Our appointment was at the end of the day when there were no other patients after us. The doctor was able to spend far more time with us and provide more in depth information than usual. This was a welcomed surprise. The more common experience has been a quick visit, in and out, because the doctor is usually behind and needs to get to the next patient. All visits should be like our last visit, ideally.
September 24, 2025
Both (name removed) and Dr. Oang are great!
September 19, 2025
It was good!
September 18, 2025
Excellent. Caring & trustworthy!
September 17, 2025
Hi, the last question, I pressed three only because by recommending him, he's gonna have more patients and it's hard enough for us now to get appointments. So it's even gonna make it harder, but he is an excellent doctor. I highly recommend him. But again, it's the problem that I think the doctors at PIH are overwhelmed because it takes so long to see a doctor at PIH. So that's my answer to number three. Yes, Dr. Long is thoroughly recommendable. Thank you, I(PHI removed).
September 15, 2025
My wife and I are 71 years old, and we've been going to PIH since the 80's. Dr. Oang has been our primary care doctor for 25 years. Unfortunately, my wife and I have had more than our share of medical problems. Dr. Oang has been there to diagnose our problems and guide us through our treatments. He has an amazing knowledge of all things medical, including drug related interactions or problems. He has correctly diagnosed medical problems with us that top specialists at the best teaching hospitals here in Ca. didn't see. My wife and I have complete trust in Dr. Oang. We are so fortunate to have him as our doctor, and we consider him our friend. Best Regards, (PHI removed)
September 08, 2025
Dr Oang and (name removed) are so phenomenal in the care and respect to their patients! Would definitely highly recommend them to family and friends and even people behind me in the grocery line! ?
September 05, 2025
Dr Oang is very knowledgeable and always explains in a very clear and easy understanding manner. Appreciate his patience and time.
September 03, 2025
I appreciate my doctor Oang because he is sincere and cares about me (his patients).
August 29, 2025
Just absolutely live Dr Oang! He spends time and is very thourough. My favorite dr ever
August 28, 2025
Dr. Oang is an excellent doctor. I trust him 100% with my care. He is thorough, kind, explains things clearly, answers all questions, and spends as much time with you as needed. I have never had such a fabulous health care provider.
August 27, 2025
(Name removed) is amazing. His nursing staff is very supportive of him and they seem to have a great relationship and take very good care of their patients. Dr. Ong is amazing and such a great practitioner. He treats his patients with passion and compassion. Thank you.
August 27, 2025
The doctor took lots of time. He was thorough in asking questions. He made it very understandable and it was a nice and pleasant experience.
August 04, 2025
Dr. Sy Oang is knowledgeable, compassionate, and truly listens. I felt heard and well cared for throughout my visit. The treatment plan was clear and personalized. I highly recommend him.
July 28, 2025
Dr Oang is an excellent physician. His nurse (name removed) is equally fantastic
July 28, 2025
Always a positive experience with Dr. Oang
July 10, 2025
Doctor Oang is a one of a kind man and doctor. He cares deeply for his patients. He is very thorough and professional. My wife and I trust him one hundred percent for our care. We drive two hours plus depending on traffic one way just to see him. It is well worth the drive to know you have, in my opinion, one of the best doctors in Southern California. I arrived half an hour early and he saw me five minutes after I arrived! We don't know what we will do if and when he retires. He is irreplaceable! He is not only a great doctor but a very good man. Each year he goes to Cambodia and offers his services for free to people who would probably not have any health care if not for him and the other doctors who go with him. We have been patients of him for about twenty years and we absolutely love this man!!
July 07, 2025
great doctor
July 07, 2025
Professional and caring provider & staff.
June 30, 2025
It was very good, the staff are kind, helpful and friendly.
June 26, 2025
I am glad to be under Dr Oang's care again. I trust him with the care of my health and wellbeing.
June 25, 2025
He does not take that much interest in my problem he kind of poo poo's it like it's no problem he's afraid to be concerned because he over prescribed in October & I ended in the hospital he kind of keeps away that's my feeling
June 23, 2025
Dr. Oang hás been our Dr. for 25 years, and for 25 years he has given us outstanding care. there is no way we would ever change doctors.
June 18, 2025
Service really good nurse (name removed) very nice and love dr oang
June 18, 2025
Not much, & all l can say is that overall PIH is definitely the place too go. DR. Sy Oang & is staff especially the nurses in fact all the staff even the ones that checks you in the front are very nice & friendly & especially Dr Sy Oang He's the bomb. Thank you Dr.Sy Oang for being our family Dr. we appreciate you & the staffs that are under you are very nice & polite & understanding. (PHI removed)
May 30, 2025
Dr. Oang is the best Doctor I've ever had. He is very wise and treats me with great respect, kindness, and provides exceptional advice on how to continue to deal with my different medical conditions.
May 30, 2025
Dr Oang is the best!
May 28, 2025
Dr Oang and nurse (name removed) are absolute the best! They listen and care for me & my wife. Have been very happy with both of them for a long time.
May 23, 2025
He is the best!!!
May 23, 2025
Dr. Oang and the nurses and staff were very friendly and professional.
May 21, 2025
I really trust the Doctors advise he gives me.
May 19, 2025
Dr. Oang has been my provider, my primary care provider for many years now. I wouldn't want any other doctor. He's very caring and very consistent, very conscientious. Thank you.
May 14, 2025
Dr Oang is very informative and explains himself in a friendly and professional manner. He is extremely knowledgeable and wisely uses factual information and personal knowledge to help his patients.
May 14, 2025
Dr. Sy Oang is a good doctor and he is very helpful to me. He's a great man.
May 14, 2025
Dr Oang is an exceptional doctor. Spends a lot of time explaining things. He keeps me healthy!! Would not go to anyone else!
May 12, 2025
Always a pleasure. Both nurse and Dr. are thorough and courteous .
May 12, 2025
Dr. Sy Oang is the best physician that we've ever had and my family is very happy with his care. We highly recommend him to others.
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