Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Michael T Martyak, MD

Surgical Critical Care Physician in Norfolk, VA · enumerated 2011.

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

National Provider Identifier

1255621900

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Registry record

Entity type Individual (Type 1)

Name Michael T Martyak

Credential MD

Sex Male

Practice address 825 Fairfax Ave Ste 610, Norfolk, VA, 23507

Phone (757) 446-5197

Fax (757) 446-5197

Enumeration date Apr 14, 2011

Last updated in NPPES Jul 21, 2022

Taxonomy & licenses

2086S0102X Surgical Critical Care Physician Allopathic & Osteopathic Physicians · License 0101262206 (VA) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

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 the NPI number for Michael Martyak?

The National Provider Identifier (NPI) for Michael Martyak is 1255621900, a Type 1 (individual) record in the CMS NPPES registry.

Where does Michael Martyak practice?

The practice location on file with NPPES is in Norfolk, VA. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-07-21.