Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. William S Cassel, MD
Surgery Physician in Muncie, IN · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1689640450
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Registry record
Entity type Individual (Type 1)
Name Dr. William S Cassel
Credential MD
Sex Male
Practice address 2525 W University Ave, Suite 403, Muncie, IN, 47303
Phone (765) 289-6381
Fax (765) 281-2620
Enumeration date Feb 23, 2006
Last updated in NPPES Dec 28, 2020
Taxonomy & licenses
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 |
|---|---|---|---|
| 200159690 | Medicaid | IN | - |
| 000000715105 | Other | IN | ANTHEM |
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 is the NPI number for William Cassel?
The National Provider Identifier (NPI) for William Cassel is 1689640450, a Type 1 (individual) record in the CMS NPPES registry.
Where does William Cassel practice?
The practice location on file with NPPES is in Muncie, IN. Providers can have multiple locations; NPPES lists the primary practice address.
Other providers at this practice address
Browse all → Paul Stewart Surgery Physician · Muncie, IN NPI 1295739100 Prakash Bhoopalam Pediatrics Physician · Muncie, IN NPI 1942208905 Anne Eliades Pediatrics Physician · Muncie, IN NPI 1154320992 Derrick Rogers Otolaryngology Physician · Muncie, IN NPI 1013916345 Susan Borregard Surgical Physician Assistant · Muncie, IN NPI 1184624801 Thomas Whiteman Otolaryngology Physician · Indianapolis, IN NPI 1780686790 Luke Philippsen Otolaryngology Physician · Muncie, IN NPI 1861494627 Jonathan Schmidt Otolaryngology Physician · Muncie, IN NPI 1699777201
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-12-28.