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

Dr. Michele May-Sien Tana, MD

Individual provider Internal Medicine Physician · NPI 1740460070

Dr. Michele May-Sien Tana, MD is a Gastroenterology in San Francisco, California. Graduated from Harvard Medical School in 2005, 21 years ago. Practices with University of California Sfgh Medical Group, a 571-clinician group and accepts Medicare assignment. Licensed in California.

Years since qualifying
21
Trained at
Harvard Medical School
Licensed in
CA
In the registry since
2007
Specialties on file
2
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

1001 Potrero Ave # 3D San Francisco General Hospital Gastroenterology
San Francisco, CA 94110-3518
Phone: (415) 730-9086
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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 A96944 (CA)
Internal Medicine Physician Taxonomy 207R00000X · Licence A96944 (CA)

Record details

NPI number1740460070
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorYes
NPI enumeratedNovember 3, 2007
Last updated in NPPESMay 11, 2021
Certification dateMay 11, 2021

Medicare enrollment

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

Medicare specialtyGASTROENTEROLOGY
Also practisesINTERNAL MEDICINE
Medical schoolHARVARD MEDICAL SCHOOL
Graduated 2005 (21 years in practice)
Group practice University Of California Sfgh Medical Group — 571 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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