Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mark A. Kelley, M.D.

Pulmonary Disease Physician in Marshfield, MA · enumerated 2006.

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

National Provider Identifier

1649348194

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Registry record

Entity type Individual (Type 1)

Name Mark A. Kelley

Credential M.D.

Sex Male

Practice address 6 Kent Ave, Marshfield, MA, 02050

Phone (248) 521-7181

Enumeration date Dec 1, 2006

Last updated in NPPES May 6, 2019

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 076453 (MI) Secondary

207RC0200X Critical Care Medicine (Internal Medicine) Physician Allopathic & Osteopathic Physicians · License 076453 (MI) Secondary

207RP1001X Pulmonary Disease Physician Allopathic & Osteopathic Physicians · License 076453 (MI) 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
425232910	Medicaid	MI	-
MK076453	Other	-	CHAMPUS-CHAMPUS
290H264420	Other	-	BLUE CROSS-BLUE CROSS
MK076453	Other	-	COMMERCIAL-COMMERCIAL NUMBER

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 specialty is Mark Kelley?

Mark Kelley is registered in NPPES with the primary taxonomy of Pulmonary Disease 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.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2019-05-06.