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

Individual provider Obstetrics & Gynecology Physician · NPI 1801880398

Dr. James Gregory Tappan, MD is an Obstetrics & Gynecology Physician in San Mateo, California. Practices as a sole proprietor. Licensed in California.

Licensed in
CA
In the registry since
2005
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

20 W 3rd Ave Ste 602
San Mateo, CA 94402-7112
Phone: (650) 347-5065
Fax: (650) 348-3425
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Specialties & licences

Obstetrics & Gynecology Physician (primary) Taxonomy 207V00000X · Licence A23884 (CA)

Record details

NPI number1801880398
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedSeptember 12, 2005
Last updated in NPPESMarch 7, 2023
Mailing address20 W 3rd Ave, Suite 602, San Mateo, CA 94402-7112

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