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Newly Listed Provider — this NPI profile has been added to the NPI registry within the last 90 days.

WILLIAM THOMSEN FNP-C
NPI 1821907072
Family Medicine in Berkeley, CA

Active since September 03, 2026
1304 ALBINA AVE # 3, BERKELEY, CA 94706(650) 387-8269 Get Directions Write a Review

NPPES record added: September 3, 2026. Verified against the NPPES registry weekly; last sync: September 06, 2026.

About William Thomsen Fnp-c NPPES

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

WILLIAM THOMSEN FNP-C (NPI 1821907072) is an individual family medicine provider in Berkeley, California, licensed in California (95300277) and active in the NPI registry since September 2026.

NPPES Registry Identity

NPI1821907072
Entity TypeIndividualMale
Primary Taxonomy207Q00000X
Provider Legal NameWILLIAM THOMSENCredential: FNP-C
Location Address1304 ALBINA AVE # 3Berkeley, CA 94706-2526
Mailing Address1304 Albina Ave # 3Berkeley, CA 94706-2526
Phone(650) 387-8269
Sole ProprietorNo
Enumeration DateSeptember 3, 2026
NPPES CertifiedSeptember 3, 2026
✔ NPI 1821907072 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyFamily MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207Q00000X
License✔ Licensed in CA · 95300277
Definition
Family Medicine is the medical specialty which is concerned with the total health care of the individual and the family. It is the specialty in breadth which integrates the biological, clinical, and behavioral sciences. The scope of family medicine is not limited by age, sex, organ system, or disease entity.
1304 ALBINA AVE # 3, Berkeley, CA 94706
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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 William Thomsen's NPI number?

The NPI number for William Thomsen is 1821907072. It was assigned to this individual provider in the NPPES registry on September 3, 2026.

Where is William Thomsen located?

William Thomsen practices at 1304 Albina Ave # 3, Berkeley, CA 94706. The listed phone number is (650) 387-8269.

What is William Thomsen's specialty?

The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.

When was this NPI record last updated?

The NPPES record for William Thomsen was last updated on September 3, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 days 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.