Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Derrick Siao, MD

Individual provider Gastroenterology Physician · NPI 1073849261

Derrick Siao, MD is a Gastroenterology in Santa Clara, California. Graduated from University of Michigan Medical School in 2008, 18 years ago. Practices with Permanente Medical Group Inc, a 10,941-clinician group and accepts Medicare assignment. Licensed in California.

Years since qualifying
18
Trained at
University of Michigan Medical School
Licensed in
CA
In the registry since
2009
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

710 Lawrence Expy Dept 248
Santa Clara, CA 95051-5173
Phone: (408) 851-2750
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Gastroenterology Physician (primary) Taxonomy 207RG0100X · Licence A110506 (CA)

Record details

NPI number1073849261
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedOctober 23, 2009
Last updated in NPPESFebruary 11, 2022
Mailing address710 Lawrence Expy, Dept 248, Santa Clara, CA 95051-5173

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyGASTROENTEROLOGY
Medical schoolUNIVERSITY OF MICHIGAN MEDICAL SCHOOL
Graduated 2008 (18 years in practice)
Group practice Permanente Medical Group Inc — 10941 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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