Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Michael Sanford Nall, M.D.

Allergy & Immunology Physician in Louisville, KY · enumerated 2009.

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

National Provider Identifier

1700014917

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Registry record

Entity type Individual (Type 1)

Name Dr. Michael Sanford Nall

Credential M.D.

Sex Male

Practice address 9113 Leesgate Rd, Louisville, KY, 40222

Phone (502) 426-1621

Fax (502) 426-7906

Enumeration date Jun 25, 2009

Last updated in NPPES Mar 20, 2015

Taxonomy & licenses

207K00000X Allergy & Immunology Physician Allopathic & Osteopathic Physicians · License 14272 (KY) Primary

174400000X Specialist Other Service Providers · License 14272 (KY) 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
50025708	Other	KY	PASSPORT
14272	Other	KY	KY LICENSE
4012731	Other	KY	AETNA
64142722	Medicaid	KY	-

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 Michael Nall?

Michael Nall is registered in NPPES with the primary taxonomy of Allergy & Immunology 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 2015-03-20.