Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Michael John Mullen, MD

Obstetrics & Gynecology Physician in Harrisburg, PA · enumerated 2006.

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

National Provider Identifier

1457386179

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Registry record

Entity type Individual (Type 1)

Name Dr. Michael John Mullen

Credential MD

Sex Male

Practice address 2645 N 3rd St, Harrisburg, PA, 17110

Phone (717) 782-4700

Fax (717) 782-4710

Enumeration date Jul 11, 2006

Last updated in NPPES Jan 25, 2021

Taxonomy & licenses

207V00000X Obstetrics & Gynecology Physician Allopathic & Osteopathic Physicians · License D0058294 (MD) Secondary

207V00000X Obstetrics & Gynecology Physician Allopathic & Osteopathic Physicians · License MD446480 (PA) 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
102891163	Medicaid	PA	-

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 Michael Mullen?

Michael Mullen is registered in NPPES with the primary taxonomy of Obstetrics & Gynecology 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 2021-01-25.