Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Jack Ewell Greer, M.D.

Otolaryngology Physician in Chattanooga, TN · enumerated 2005.

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

National Provider Identifier

1609875467

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Registry record

Entity type Individual (Type 1)

Name Jack Ewell Greer

Credential M.D.

Sex Male

Practice address 901 Riverfront Parkway, Suite 300, Chattanooga, TN, 37402

Phone (423) 698-8981

Fax (423) 697-7109

Enumeration date Jul 14, 2005

Last updated in NPPES Jun 25, 2025

Taxonomy & licenses

207Y00000X Otolaryngology Physician Allopathic & Osteopathic Physicians · License 047438 (GA) Secondary

207Y00000X Otolaryngology Physician Allopathic & Osteopathic Physicians · License MD0000026020 (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
1040185	Other	TN	UNITED HLTHCARE
3126040	Other	TN	BC/BS TN
00815328A	Medicaid	GA	-

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 Jack Greer?

Jack Greer is registered in NPPES with the primary taxonomy of Otolaryngology Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-06-25.