Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Joshua Baker Weil, MD

Emergency Medicine Physician in Santa Rosa, CA · enumerated 2006.

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

National Provider Identifier

1508945643

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Registry record

Entity type Individual (Type 1)

Name Joshua Baker Weil

Credential MD

Sex Male

Practice address 401 Bicentennial Way, Santa Rosa, CA, 95403

Phone (707) 571-4000

Enumeration date Nov 2, 2006

Last updated in NPPES Dec 13, 2021

Taxonomy & licenses

207P00000X Emergency Medicine Physician Allopathic & Osteopathic Physicians · License A61092 (CA) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier	Type	State	Issuer
00A610920	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.

Read the full guide → Validate an NPI →

Frequently asked questions

Is NPI 1508945643 active?

Yes, as of the latest NPPES snapshot, NPI 1508945643 is active (record last updated 2021-12-13).

How do I verify Joshua Weil's NPI record?

Cross-check NPI 1508945643 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-12-13.