Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Mark Lincoln Bunker, MD

Immunopathology Physician in Pittsburgh, PA · enumerated 2005.

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

National Provider Identifier

1689669947

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Registry record

Entity type Individual (Type 1)

Name Dr. Mark Lincoln Bunker

Credential MD

Sex Male

Practice address 4800 Friendship Ave, Allegheny Pathology Associates, Pittsburgh, PA, 15224

Phone (412) 578-7120

Fax (412) 578-4526

Enumeration date Sep 13, 2005

Last updated in NPPES Oct 7, 2020

Taxonomy & licenses

207ZB0001X Blood Banking & Transfusion Medicine Physician Allopathic & Osteopathic Physicians · License MD040088L (PA) Secondary

207ZP0102X Anatomic Pathology & Clinical Pathology Physician Allopathic & Osteopathic Physicians · License MD040088L (PA) Secondary

207ZI0100X Immunopathology Physician Allopathic & Osteopathic Physicians · License MD040088L (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
0202215000	Medicaid	WV	-
0014236100005	Medicaid	PA	-
2466399	Medicaid	OH	-

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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 Mark Bunker?

Mark Bunker is registered in NPPES with the primary taxonomy of Immunopathology 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 2020-10-07.