Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Michael S Greer, M.D.

Vascular Surgery Physician in Chattanooga, TN · enumerated 2005.

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

National Provider Identifier

1215921945

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Registry record

Entity type Individual (Type 1)

Name Dr. Michael S Greer

Credential M.D.

Sex Male

Practice address 2108 E 3rd St, Suite 200, Chattanooga, TN, 37404

Phone (423) 267-0466

Fax (423) 778-8168

Enumeration date Sep 8, 2005

Last updated in NPPES Feb 18, 2019

Taxonomy & licenses

2086S0129X Vascular Surgery Physician Allopathic & Osteopathic Physicians · License MD12306 (TN) Primary

208600000X Surgery Physician Allopathic & Osteopathic Physicians · License MD12306 (TN) Secondary

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
2606233 001	Other	-	CIGNA
62165877412	Other	-	JDH
890661T	Medicaid	NC	-
Q002546	Medicaid	TN	-
00345716B	Medicaid	GA	-
47561	Other	-	BCBS OF TN
1740068	Other	-	UHC
008701940	Medicaid	AL	-
020041423	Other	-	RR MEDICARE

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

Where does Michael Greer practice?

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

What is the NPI number for Michael Greer?

The National Provider Identifier (NPI) for Michael Greer is 1215921945, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

Browse all →

William Cockerham Surgery Physician · Chattanooga, TN NPI 1952395915 Joel Clements Vascular Surgery Physician · Chattanooga, TN NPI 1548254261 Daniel Fisher Vascular Surgery Physician · Chattanooga, TN NPI 1053305789 Coleman Arnold Surgery Physician · Chattanooga, TN NPI 1629062260 James Zellner Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician · Chattanooga, TN NPI 1184610867 Harold Head Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician · Chattanooga, TN NPI 1477549152 Mid-South Surgical Associates Pllc Specialist · Chattanooga, TN NPI 1811941396 Charles Joels Vascular Surgery Physician · Chattanooga, TN NPI 1497770283

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2019-02-18.