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Dr. Gregory John Mancini, MD

Surgery Physician in Knoxville, TN · enumerated 2006 · practices at University Health System Inc.

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

National Provider Identifier

1548211857

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Registry record

Entity type Individual (Type 1)
Name Dr. Gregory John Mancini
Credential MD
Sex Male
Practice address 1934 Alcoa Hwy Ste 285, Knoxville, TN, 37920
Phone (865) 305-9620
Fax (865) 525-3460
Enumeration date May 12, 2006
Last updated in NPPES Jan 25, 2019

Taxonomy & licenses

208600000X Surgery Physician Allopathic & Osteopathic Physicians · License 40807 (TN) Primary
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
3816963 Medicaid TN -

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 this the official NPI registry?
No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.
What specialty is Gregory Mancini?
Gregory Mancini is registered in NPPES with the primary taxonomy of Surgery Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2019-01-25.