Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Gregory Allen Watson, M.D.

Surgery Physician in Pittsburgh, PA · enumerated 2007.

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

National Provider Identifier

1174728158

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Registry record

Entity type Individual (Type 1)

Name Dr. Gregory Allen Watson

Credential M.D.

Sex Male

Practice address 200 Lothrop St, F675 Presbyterian University Hospital, Pittsburgh, PA, 15213

Phone (412) 647-3389

Enumeration date Jun 19, 2007

Last updated in NPPES Apr 15, 2021

Taxonomy & licenses

2086S0102X Surgical Critical Care Physician Allopathic & Osteopathic Physicians · License MD421843 (PA) Secondary

208600000X Surgery Physician Allopathic & Osteopathic Physicians · License MD421843 (PA) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

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 Gregory Watson?

Gregory Watson is registered in NPPES with the primary taxonomy of Surgery 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.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-04-15.