Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Stephen Marietta, M.D.

Interventional Cardiology Physician in Knoxville, TN · enumerated 2005.

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

National Provider Identifier

1053301606

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Registry record

Entity type Individual (Type 1)

Name Dr. Stephen Marietta

Credential M.D.

Sex Male

Practice address 9330 Park West Blvd, Suite 202, Knoxville, TN, 37923

Phone (865) 691-4850

Fax (865) 694-8018

Enumeration date Oct 25, 2005

Last updated in NPPES Aug 17, 2020

Taxonomy & licenses

207RI0011X Interventional Cardiology Physician Allopathic & Osteopathic Physicians · License 16657 (TN) Primary

207RC0000X Cardiovascular Disease Physician Allopathic & Osteopathic Physicians · License 16657 (TN) 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

What is the NPI number for Stephen Marietta?

The National Provider Identifier (NPI) for Stephen Marietta is 1053301606, a Type 1 (individual) record in the CMS NPPES registry.

Where does Stephen Marietta practice?

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

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-08-17.