Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Coyness L. Ennix Jr., M.D., Inc.

Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician in Oakland, CA · enumerated 2008 · authorized official Coyness Ennix, President.

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

National Provider Identifier

1689832610

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Registry record

Entity type Organization (Type 2)

Legal business name Coyness L. Ennix Jr., M.D., Inc.

Practice address 3300 Webster St, Suite 404, Oakland, CA, 94609

Phone (510) 465-5500

Fax (510) 835-2682

Enumeration date May 27, 2008

Last updated in NPPES May 27, 2008

Taxonomy & classification

208G00000X Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician Allopathic & Osteopathic Physicians · License C39990 (CA) Primary

Authorized official

Name Coyness Ennix

Title President

Phone (510) 465-5500

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

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.

What type of organization is Coyness L. Ennix Jr., M.D., Inc.?

Coyness L. Ennix Jr., M.D., Inc. is registered in NPPES as a Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician (its primary provider taxonomy).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-05-27.