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John P. Zimmermann, MD, Inc.

Ambulatory Surgical Clinic/Center in Napa, CA · enumerated 2009 · authorized official John Zimmermann, President.

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

National Provider Identifier

1528207479

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Registry record

Entity type Organization (Type 2)
Legal business name John P. Zimmermann, MD, Inc.
Practice address 3443 Villa Ln, Suite 10, Napa, CA, 94558
Phone (707) 258-6077
Fax (707) 253-7182
Enumeration date Feb 17, 2009
Last updated in NPPES Feb 17, 2009

Taxonomy & classification

261QA1903X Ambulatory Surgical Clinic/Center Ambulatory Health Care Facilities · License G26664 (CA) Primary

Authorized official

Name John Zimmermann
Title President
Phone 70072586077

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

How current is this record?
Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2009-02-17. Verify at npiregistry.cms.hhs.gov.
Where is John P. Zimmermann, MD, Inc. located?
The practice location on file with NPPES is in Napa, CA.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2009-02-17.