Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
William R Schafer, PA
Physician Assistant in Rexford, NY · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1205851524
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Registry record
Entity type Individual (Type 1)
Name William R Schafer
Credential PA
Sex Male
Practice address 22 Riverwind Dr, Rexford, NY, 12148
Phone (518) 605-1520
Enumeration date Jul 13, 2006
Last updated in NPPES Feb 21, 2020
Taxonomy & licenses
363A00000X Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License 003366 (NY) Primary
PA · Physician Assistant: A licensed clinician who practices medicine in collaboration with physicians, trained in a graduate PA program.
About the PA 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 Schafer?
William Schafer is registered in NPPES with the primary taxonomy of Physician Assistant. 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 2020-02-21.