Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Margie M Hartfield, MD

Pediatrics Physician in Nogales, AZ · enumerated 2006.

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

National Provider Identifier

1659468650

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Registry record

Entity type Individual (Type 1)

Name Margie M Hartfield

Credential MD

Sex Female

Practice address 1852 N Mastick Way, Nogales, AZ, 85621

Phone (520) 281-1550

Fax (520) 281-2335

Enumeration date Oct 10, 2006

Last updated in NPPES Dec 30, 2024

Taxonomy & licenses

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License 036105045 (IL) Secondary

208000000X Pediatrics Physician Allopathic & Osteopathic Physicians · License 036105045 (IL) Secondary

208000000X Pediatrics Physician Allopathic & Osteopathic Physicians · License 54710 (AZ) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

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

What specialty is Margie Hartfield?

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

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.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-12-30.