Sorry, there was a problem.

An unexpected error occurred and your request couldn't be handled. Please call a Dignity Health representative at
(844) 274-8497
Chat with us here.

Reference code:
Save a doctor and build your
medical team
Doctor is saved to your
medical team
Saving a doctor is currently down.
Please try again later.

Dr. Thomas Hsia, MD


(805) 922-6581

Santa Maria Gastroenterology Group

361 Town Ctr W Ste 101 Santa Maria , CA 93458

Get to Know Dr. Hsia

Accepting Patients



32 Years

Care Philosophy

We understand that visiting the gastroenterologist may be a new experience for you and that you may be in pain or worried about your health. That?s why all the staff at the Santa Maria Digestive Diagnostic Center and Santa Maria Gastroenterology focus on making you feel comfortable and confident in our care. Our physicians and our medical team take extra care to listen to your concerns, answer all your questions and thoroughly explain your condition and treatment options.


University Of California, San Francisco, School Of Medicine 1986

University Of California Davis 1990

University Of California Davis 1994

University Of California Davis 1987

Dr. Hsia's Experience


Internal Medicine

Awards & Recognitions

Recognized Doctor

Dr. Hsia's Locations

Accepting New Patients


Santa Maria Gastroenterology Group

361 Town Ctr W Ste 101, Santa Maria, CA 93458

(805) 922-6581 Fax: (805) 348-3217

Affiliated Hospitals

Marian Regional Medical Center

1400 E Church St, Santa Maria, CA 93454

Notice: "Find a Doctor" is provided by Dignity Health as a convenience to you. The information on each participating doctor is submitted to Dignity Health by each doctor and is not independently verified by Dignity Health. Each doctor is solely responsible for the completeness and accuracy of the information listed about him or her. Dignity Health is not responsible for any loss or damages caused by your reliance on the doctor information contained on Find a Doctor. You should telephone the doctor's office in advance to verify the accuracy of the information.