Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. William A Kostun, MD

Pediatrics Physician in Troy, NY · enumerated 2006.

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

National Provider Identifier

1457320061

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Registry record

Entity type Individual (Type 1)

Name Dr. William A Kostun

Credential MD

Sex Male

Practice address 1300 Massachusetts Ave, Troy, NY, 12180

Phone (518) 272-7614

Enumeration date Mar 16, 2006

Last updated in NPPES May 14, 2021

Taxonomy & licenses

173000000X Legal Medicine Other Service Providers · License 162554 (NY) Secondary

208000000X Pediatrics Physician Allopathic & Osteopathic Physicians · License 162554 (NY) 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

Is NPI 1457320061 active?

Yes, as of the latest NPPES snapshot, NPI 1457320061 is active (record last updated 2021-05-14).

How do I verify William Kostun's NPI record?

Cross-check NPI 1457320061 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Chinedu Abara Anesthesiology Physician · Troy, NY NPI 1023010212 Paul Lundgren Cardiovascular Disease Physician · Troy, NY NPI 1992797955 Seton Health System, Inc General Acute Care Hospital · Troy, NY NPI 1811982911 Vishnu Mehrotra Anatomic Pathology & Clinical Pathology Physician · Troy, NY NPI 1790775955 Jihong Tang Anatomic Pathology & Clinical Pathology Physician · Troy, NY NPI 1396735569 Jay Salwen Diagnostic Radiology Physician · Troy, NY NPI 1871584912 Ronald Karo Diagnostic Radiology Physician · Troy, NY NPI 1194715201 Britton Limes Diagnostic Radiology Physician · Troy, NY NPI 1407846538

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-05-14.