Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Robert G Hammer MD & Associates

Internal Medicine Physician in Louisville, KY · enumerated 2009 · authorized official Robert Hammer, Owner.

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

National Provider Identifier

1861623928

Verified

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Registry record

Entity type Organization (Type 2)

Legal business name Robert G Hammer MD & Associates

Other name <Unavail>

Practice address 4500 Churchman Ave, 200 Plaza 3, Louisville, KY, 40215

Phone (502) 361-1121

Fax (502) 361-9030

Enumeration date Aug 6, 2009

Last updated in NPPES Mar 11, 2013

Taxonomy & classification

163WG0000X General Practice Registered Nurse Nursing Service Providers · License 4171P (KY) Secondary

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 24503 (KY) Primary

208000000X Pediatrics Physician Allopathic & Osteopathic Physicians · License 24503 (KY) Secondary

Authorized official

Name Robert Hammer

Title Owner

Phone (502) 361-1121

Other identifiers

Identifier	Type	State	Issuer
000000632751	Other	KY	ANTHEM

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 a Type 2 NPI?

A Type 2 NPI identifies an organization (group practice, hospital, pharmacy, lab), while Type 1 NPIs identify individual providers. Organizations bill under their Type 2 NPI.

What type of organization is Robert G Hammer MD & Associates?

Robert G Hammer MD & Associates is registered in NPPES as a Internal Medicine Physician (its primary provider taxonomy).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-03-11.