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DR. JAMES MATTHEW WANTUCK M.D.
NPI 1821301110
Internal Medicine in San Francisco, CA

Active since July 15, 2010
2261 MARKET ST # 86887, SAN FRANCISCO, CA 94114(855) 516-7755(650) 672-3681 Get Directions Write a Review

NPPES record last updated: January 7, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Jan 7, 2026, Sep 7, 2023, Jan 10, 2023 and 3 more (6 updates tracked since 2016).

About Dr. James Matthew Wantuck M.d. NPPES

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

DR. JAMES MATTHEW WANTUCK M.D. (NPI 1821301110) is an individual internal medicine provider in San Francisco, California, licensed in California (A117984) and active in the NPI registry since July 2010.

NPPES Registry Identity

NPI1821301110
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameDR. JAMES MATTHEW WANTUCKCredential: M.D.
Location Address2261 MARKET ST # 86887San Francisco, CA 94114-1612
Mailing Address2261 Market St # 86887San Francisco, CA 94114-1612 · (855) 516-7755 · Fax (650) 672-3681
Phone(855) 516-7755
Fax(650) 672-3681
Sole ProprietorNo
Enumeration DateJuly 15, 2010
Last NPPES UpdateJanuary 7, 20266 updates tracked since enumeration
NPPES CertifiedJanuary 7, 2026
✔ NPI 1821301110 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in CA · A117984
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
Also ListedFamily MedicineTaxonomy 207Q00000X · License A117984 (CA)
2261 MARKET ST # 86887, San Francisco, CA 94114
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Other Providers at the Same Location NPPES 3

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

STEPHEN VOGEL M.D.
Family Medicine
2261 MARKET ST # 86887
SAN FRANCISCO, CA 94114
San Francisco County (855) 516-7755
DR. SHARON MARIE BRAUN MD
Family Medicine
2261 MARKET ST # 86887
SAN FRANCISCO, CA 94114
San Francisco County (855) 516-7755
DR. ANDREW GERARD VAN VUGT M.D.
Internal Medicine
2261 MARKET ST # 86887
SAN FRANCISCO, CA 94114
San Francisco County (855) 516-7755

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 James Wantuck's NPI number?

The NPI number for James Wantuck is 1821301110. It was assigned to this individual provider in the NPPES registry on July 15, 2010.

Where is James Wantuck located?

James Wantuck practices at 2261 Market St # 86887, San Francisco, CA 94114. The listed phone number is (855) 516-7755.

What is James Wantuck's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

When was this NPI record last updated?

The NPPES record for James Wantuck was last updated on January 7, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.