What is Thomas Tarshis's NPI number?

Thomas Tarshis's National Provider Identifier (NPI) is 1043304017, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Thomas Tarshis's specialty?

Thomas Tarshis is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).

Where is Thomas Tarshis located?

Thomas Tarshis's practice location on file with NPPES is 3030 Ashby Ave Ste 104, Berkeley, CA 94705-2439.

What is Thomas Tarshis's phone number?

The practice phone number listed in the NPPES registry for Thomas Tarshis is (510) 224-4221.

Is Thomas Tarshis's NPI active?

Yes — Thomas Tarshis's NPI (1043304017) is active in the NPPES registry as of the last update on 2026-01-16.

IndividualActive

Thomas Tarshis, MD

NPI 1043304017 · Psychiatry Physician · Berkeley, CA

Thomas Tarshis, MD is a Psychiatry Physician provider in Berkeley, CA (NPI 1043304017).

Provider details

NPI number: 1043304017
Entity type: Individual
Primary specialty: Psychiatry PhysicianAllopathic & Osteopathic Physicians
Credential: MD
Sex: Male
Sole proprietor: No
License: A81257 (CA)

Specialties & taxonomies

Psychiatry PhysicianPrimary2084P0800XLicense A81257 (CA)
Allopathic & Osteopathic Physicians

Profile Score

Detailed profile(90/100 index)

A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.

Registry tenure38% of score
19 yrs in NPPES registry
Profile completeness38% of score
100% of core fields populated
Practice footprint23% of score
1 documented practice location

Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.

Practice location

3030 Ashby Ave Ste 104

Berkeley, CA 94705-2439

Phone: (510) 224-4221

Fax: (510) 422-1442

Street-level locationGet directions

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Mailing address