Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Mr. John J Greco, MD

Q: What is the NPI number for John Greco?

The National Provider Identifier (NPI) for John Greco is 1710948948, a Type 1 (individual) record in the CMS NPPES registry.

Orthopaedic Surgery Physician in Huntsville, AL · enumerated 2006.

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

National Provider Identifier

1710948948

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Registry record

Entity type Individual (Type 1)

Name Mr. John J Greco

Credential MD

Sex Male

Practice address Huntsville, AL, 35801

Phone (256) 539-2728

Fax (256) 428-3423

Enumeration date Mar 29, 2006

Last updated in NPPES Apr 30, 2024

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

207XX0005X Sports Medicine (Orthopaedic Surgery) Physician Allopathic & Osteopathic Physicians · License 15847 (AL) Secondary

207X00000X Orthopaedic Surgery Physician Allopathic & Osteopathic Physicians · License 15847 (AL) 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
000078783	Medicaid	AL	-
0910080	Other	AL	UNITED HEALTHCARE
5708109	Other	AL	AETNA
200042032	Other	AL	RAILROAD MEDICARE
51078783	Other	AL	BCBS

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 the NPI number for John Greco?

The National Provider Identifier (NPI) for John Greco is 1710948948, a Type 1 (individual) record in the CMS NPPES registry.

Where does John Greco practice?

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

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-04-30.