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John Muir Trauma Physicians Billing Service

Hospitalist Physician in Walnut Creek, CA · enumerated 2007 · authorized official Mike Thomas, Ceo.

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

National Provider Identifier

1720137565

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Registry record

Entity type Organization (Type 2)
Legal business name John Muir Trauma Physicians Billing Service
Parent organization John Muir Heath
Practice address 1601 Ygnacio Valley Rd, Walnut Creek, CA, 94598
Phone (925) 947-5331
Fax (925) 941-2177
Enumeration date Jan 10, 2007
Last updated in NPPES Feb 23, 2023

Taxonomy & classification

208M00000X Hospitalist Physician Allopathic & Osteopathic Physicians Primary

Authorized official

Name Mike Thomas
Title Ceo
Phone (925) 941-2100

Other identifiers

Identifier Type State Issuer
GR002814D 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 type of organization is John Muir Trauma Physicians Billing Service?
John Muir Trauma Physicians Billing Service is registered in NPPES as a Hospitalist Physician (its primary provider taxonomy).
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.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-02-23.