Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Walter Diehl Willihnganz, M.D.
Surgery Physician in Quakertown, PA · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1922038546
See something wrong? Report a correction
Registry record
Entity type Individual (Type 1)
Name Walter Diehl Willihnganz
Credential M.D.
Sex Male
Practice address 401 W Broad St, Quakertown, PA, 18951
Phone (215) 538-2011
Fax (215) 538-7580
Enumeration date Jul 3, 2006
Last updated in NPPES Jul 8, 2007
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 |
|---|---|---|---|
| 00074256400013 | Medicaid | PA | - |
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 Walter Willihnganz?
The National Provider Identifier (NPI) for Walter Willihnganz is 1922038546, a Type 1 (individual) record in the CMS NPPES registry.
Where does Walter Willihnganz practice?
The practice location on file with NPPES is in Quakertown, PA. Providers can have multiple locations; NPPES lists the primary practice address.
Other providers at this practice address
Browse all → Robert Roberts Family Medicine Physician · Quakertown, PA NPI 1245254507 Susan Benner Women's Health Nurse Practitioner · Quakertown, PA NPI 1275695959 St. Luke'S Physician Group, Inc. Family Medicine Physician · Quakertown, PA NPI 1851430474 Aleta L Detwiler Dmd Teresa C Stiteler Dmd Dentist · Quakertown, PA NPI 1912101395 Planned Parenthood Keystone Clinic/Center · Quakertown, PA NPI 1689835449 Teresa Stiteler Dentist · Quakertown, PA NPI 1750666962
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.