Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Mark Stephen Mctammany, M.D.

Gynecology Physician in Melbourne, FL · enumerated 2005.

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

National Provider Identifier

1265434211

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Registry record

Entity type Individual (Type 1)

Name Dr. Mark Stephen Mctammany

Credential M.D.

Sex Male

Practice address 1315 Valentine St, Melbourne, FL, 32901

Phone (321) 768-7677

Fax (321) 768-7756

Enumeration date Jun 2, 2005

Last updated in NPPES May 18, 2021

Taxonomy & licenses

207VG0400X Gynecology Physician Allopathic & Osteopathic Physicians · License ME0072191 (FL) Primary

207V00000X Obstetrics & Gynecology Physician Allopathic & Osteopathic Physicians · License ME72191 (FL) Secondary

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
8653840	Other	FL	CIGNA
5510582	Other	FL	AETNA
252532100	Medicaid	FL	-

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

Is NPI 1265434211 active?

Yes, as of the latest NPPES snapshot, NPI 1265434211 is active (record last updated 2021-05-18).

How do I verify Mark Mctammany's NPI record?

Cross-check NPI 1265434211 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 2021-05-18.