NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

William J Baier, MD

Pediatrics Physician in Lockport, NY · enumerated 2006.

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

National Provider Identifier

1043275159

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Registry record

Entity type Individual (Type 1)
Name William J Baier
Credential MD
Sex Male
Practice address Lockport, NY, 14094
Phone (716) 433-6711
Fax (716) 433-0546
Enumeration date Apr 20, 2006
Last updated in NPPES Mar 29, 2012

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

2080A0000X Pediatric Adolescent Medicine Physician Allopathic & Osteopathic Physicians · License 141577 (NY) Secondary
208000000X Pediatrics Physician Allopathic & Osteopathic Physicians · License 141577 (NY) 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
000508168001 Other NY BLUE CROSS/BLUE SHIELD
00603190 Medicaid NY -
00010008001 Other NY UNIVERA HEALTHCARE
1208996 Other NY INDEPENDENT HEALTH

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

Where does William Baier practice?
The practice location on file with NPPES is in Lockport, NY. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for William Baier?
The National Provider Identifier (NPI) for William Baier is 1043275159, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-03-29.