Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mark E Donnelly, M.D.

Specialist in Flagstaff, AZ · enumerated 2005 · practices at Southwest Heart and Lung Flagstaff.

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

National Provider Identifier

1902802192

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Registry record

Entity type Individual (Type 1)

Name Mark E Donnelly

Credential M.D.

Sex Male

Practice address 1215 N Beaver St, Ste 202, Flagstaff, AZ, 86001

Phone (928) 773-2200

Fax (928) 773-2201

Enumeration date Jun 22, 2005

Last updated in NPPES Mar 14, 2017

Taxonomy & licenses

174400000X Specialist Other Service Providers · License 18917 (AZ) 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
286874	Medicaid	AZ	-
P01112889	Other	AZ	RAILROAD MEDICARE

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 Mark Donnelly?

The National Provider Identifier (NPI) for Mark Donnelly is 1902802192, a Type 1 (individual) record in the CMS NPPES registry.

Where does Mark Donnelly practice?

The practice location on file with NPPES is in Flagstaff, AZ. 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 2017-03-14.