Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

James M Hellyer MD A Medical Corp

Anesthesiology Physician in Thousand Oaks, CA · enumerated 2007 · authorized official James Hellyer, President.

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

National Provider Identifier

1043367527

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Registry record

Entity type Organization (Type 2)

Legal business name James M Hellyer MD A Medical Corp

Practice address 227 W Janss Rd Ste 240, Thousand Oaks, CA, 91360

Phone (805) 371-0455

Enumeration date Jan 5, 2007

Last updated in NPPES May 6, 2015

Taxonomy & classification

207L00000X Anesthesiology Physician Allopathic & Osteopathic Physicians · License G31743 (CA) Primary

Authorized official

Name James Hellyer

Title President

Phone (800) 883-7243

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 2015-05-06. Verify at npiregistry.cms.hhs.gov.

Where is James M Hellyer MD A Medical Corp located?

The practice location on file with NPPES is in Thousand Oaks, CA.

Providers at this address

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Harry J Cozen, M.D., Amc Anesthesiology Physician · Thousand Oaks, CA NPI 1902837933

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2015-05-06.