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John R. Tesman, M.D., Inc.

Undersea and Hyperbaric Medicine (Emergency Medicine) Physician in Ventura, CA · enumerated 2011 · authorized official Elena Stemmler, Billing Manager.

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

National Provider Identifier

1053615740

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Registry record

Entity type Organization (Type 2)
Legal business name John R. Tesman, M.D., Inc.
Practice address 2705 Loma Vista Rd Ste 205, Ventura, CA, 93003
Phone (805) 652-5011
Enumeration date Jan 10, 2011
Last updated in NPPES Feb 18, 2011

Taxonomy & classification

207PE0005X Undersea and Hyperbaric Medicine (Emergency Medicine) Physician Allopathic & Osteopathic Physicians · License G65726 (CA) Primary

Authorized official

Name Elena Stemmler
Title Billing Manager
Phone (619) 258-6200

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

Where is John R. Tesman, M.D., Inc. located?
The practice location on file with NPPES is in Ventura, CA.
How current is this record?
Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2011-02-18. Verify at npiregistry.cms.hhs.gov.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-02-18.