Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Marnie Jean Widdifield, MD

Family Medicine Physician in Greencastle, IN · enumerated 2006.

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

National Provider Identifier

1790756443

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Registry record

Entity type Individual (Type 1)

Name Dr. Marnie Jean Widdifield

Credential MD

Sex Female

Practice address 1542 S Bloomington St, Greencastle, IN, 46135

Phone (765) 301-7617

Fax (765) 301-7621

Enumeration date Jan 31, 2006

Last updated in NPPES Mar 31, 2021

Taxonomy & licenses

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License 01051575A (IN) 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
510512209	Other	IN	PROHEALTH
510512209	Other	IN	OPEN
000000001373	Other	IN	MPLAN (PROHEALTH)
P00201816	Other	IN	RR MEDICARE
510512209	Other	IN	COMMERCIAL INSURANCE
000000336833	Other	IN	BLUE CROSS / BLUE SHIELD

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 Marnie Widdifield?

Marnie Widdifield is registered in NPPES with the primary taxonomy of Family Medicine 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 2021-03-31.