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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 30 days.

DR. KATHRYN LEA SEWELL M.D.
NPI 1689652612
Internal Medicine - Geriatric Medicine in San Francisco, CA

Active since January 09, 2006
1515 BAKER ST, SAN FRANCISCO, CA 94115(415) 345-1973 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: July 26, 2026.

Record update history: Jul 13, 2026, Sep 11, 2025 (2 updates tracked since 2025).

About Dr. Kathryn Lea Sewell M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. KATHRYN LEA SEWELL M.D. (NPI 1689652612) is an individual geriatric medicine provider in San Francisco, California, licensed in Massachusetts (60367) and active in the NPI registry since January 2006.

NPPES Registry Identity

NPI1689652612
Entity TypeIndividualFemale
Primary Taxonomy207RG0300X
Provider Legal NameDR. KATHRYN LEA SEWELLCredential: M.D.
Location Address1515 BAKER STSan Francisco, CA 94115-2908
Mailing Address1515 Baker StSan Francisco, CA 94115-2908 · (415) 345-1973
Phone(415) 345-1973
Sole ProprietorNo
Enumeration DateJanuary 9, 2006
Last NPPES UpdateJuly 13, 20262 updates tracked since enumeration
✔ NPI 1689652612 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal Medicine · Geriatric MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207RG0300X
Licenses✔ Licensed in MA · 60367✔ Licensed in CA · G85724
Definition
An internist who has special knowledge of the aging process and special skills in the diagnostic, therapeutic, preventive and rehabilitative aspects of illness in the elderly. This specialist cares for geriatric patients in the patient's home, the office, long-term care settings such as nursing homes and the hospital.
Also ListedInternal Medicine · RheumatologyTaxonomy 207RR0500X · License 60367 (MA), G85724 (CA)
1515 BAKER ST, San Francisco, CA 94115
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Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Kathryn Sewell's NPI number?

The NPI number for Kathryn Sewell is 1689652612. It was assigned to this individual provider in the NPPES registry on January 9, 2006.

Where is Kathryn Sewell located?

Kathryn Sewell practices at 1515 Baker St, San Francisco, CA 94115. The listed phone number is (415) 345-1973.

What is Kathryn Sewell's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Geriatric Medicine, with taxonomy code 207RG0300X.

When was this NPI record last updated?

The NPPES record for Kathryn Sewell was last updated on July 13, 2026. NPI Profile syncs with the weekly NPPES data releases published by CMS.