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Internists Medical Group

Undersea and Hyperbaric Medicine (Preventive Medicine) Physician in Oakland, CA · enumerated 2007 · authorized official Robert Tufft, Owner.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1033313838

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Registry record

Entity type Organization (Type 2)
Legal business name Internists Medical Group
Practice address 2930 Mcclure St, Suite 1, Oakland, CA, 94609
Phone (510) 444-2155
Fax (510) 444-0274
Enumeration date Jun 14, 2007
Last updated in NPPES Sep 11, 2025

Taxonomy & classification

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License G38113 (CA) Secondary
207RG0300X Geriatric Medicine (Internal Medicine) Physician Allopathic & Osteopathic Physicians · License G38113 (CA) Secondary
2083P0011X Undersea and Hyperbaric Medicine (Preventive Medicine) Physician Allopathic & Osteopathic Physicians · License G38113 (CA) Primary

Authorized official

Name Robert Tufft
Title Owner
Phone (510) 444-2155

Other identifiers

Identifier Type State Issuer
GR0027060 Medicaid CA -

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

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Frequently asked questions

What is a Type 2 NPI?
A Type 2 NPI identifies an organization (group practice, hospital, pharmacy, lab), while Type 1 NPIs identify individual providers. Organizations bill under their Type 2 NPI.
What type of organization is Internists Medical Group?
Internists Medical Group is registered in NPPES as a Undersea and Hyperbaric Medicine (Preventive Medicine) Physician (its primary provider taxonomy).

Providers at this address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-09-11.