Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Steven T Mast, MD

Q: What is the NPI number for Steven Mast?

The National Provider Identifier (NPI) for Steven Mast is 1174522429, a Type 1 (individual) record in the CMS NPPES registry.

Interventional Cardiology Physician in Traverse City, MI · enumerated 2005.

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

National Provider Identifier

1174522429

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Dr. Steven T Mast

Credential MD

Sex Male

Practice address 1200 Sixth St, Suite 200, Traverse City, MI, 49684

Phone (231) 935-5800

Fax (231) 935-5799

Enumeration date Jul 19, 2005

Last updated in NPPES Apr 10, 2024

Taxonomy & licenses

207RI0011X Interventional Cardiology Physician Allopathic & Osteopathic Physicians · License 140260 (MT) Primary

207RC0000X Cardiovascular Disease Physician Allopathic & Osteopathic Physicians · License 4301087485 (MI) Secondary

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

Where does Steven Mast practice?

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

What is the NPI number for Steven Mast?

The National Provider Identifier (NPI) for Steven Mast is 1174522429, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-04-10.