Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
William I. Birsic, M.D.
Surgery Physician in Greensburg, PA · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1851307854
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Registry record
Entity type Individual (Type 1)
Name William I. Birsic
Credential M.D.
Sex Male
Practice address 44 S Washington Ave, Greensburg, PA, 15601
Phone (724) 689-1335
Fax (724) 689-1337
Enumeration date Jul 31, 2006
Last updated in NPPES Nov 9, 2023
Taxonomy & licenses
2086S0127X Trauma Surgery Physician Allopathic & Osteopathic Physicians · License MD037323E (PA) Secondary
208600000X Surgery Physician Allopathic & Osteopathic Physicians · License 036-099223 (IL) Secondary
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.
Frequently asked questions
What specialty is William Birsic?
William Birsic 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.
Other providers at this practice address
Browse all → Paul Malaspina Surgery Physician · Greensburg, PA NPI 1710979620 Raveen Bazaz Clinical Cardiac Electrophysiology Physician · Greensburg, PA NPI 1356313563 Stephen Bowser Cardiovascular Disease Physician · Greensburg, PA NPI 1598737355 Ehab Morcos Interventional Cardiology Physician · Greensburg, PA NPI 1528028842 James Adisey Cardiovascular Disease Physician · Greensburg, PA NPI 1033228622 Lawrence Denino Cardiovascular Disease Physician · Greensburg, PA NPI 1639287469 Juan Chahin Interventional Cardiology Physician · Greensburg, PA NPI 1619086204 Jason George Physician Assistant · Greensburg, PA NPI 1124125240
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-11-09.