John Williams
John Williams is a Pediatric Infectious Diseases Physician provider (Pediatrics) practicing in Madison, WI, registered in the NPPES registry with NPI 1831286962 since 2006. Practices at University of Wisconsin System Non Payroll (listed at the same practice address in NPPES).
✓ Active NPI ✓ Valid NPI checksum
| NPI | 1831286962 |
|---|---|
| Entity type | Individual (Type 1) |
| Name | John Williams |
| Sex | Male |
| Practice address | 1675 HIGHLAND AVE, Madison, WI, 53792 |
| Phone | 6082630946 |
| Enumeration date | 2006-10-09 |
| Last updated in NPPES | 2025-02-24 |
Taxonomy & licenses
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 2080P0208X | Pediatric Infectious Diseases Physician | Secondary | 23460 | NH |
| 2080P0208X | Pediatric Infectious Diseases Physician | Secondary | MD34293 | TN |
| 2080P0208X | Pediatric Infectious Diseases Physician | Primary | 84587-20 | WI |
Copy-ready billing details
Provider: John Williams NPI: 1831286962 Taxonomy: 2080P0208X (Pediatric Infectious Diseases Physician) Address: 1675 HIGHLAND AVE, Madison, WI, 53792
Other providers at this practice address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1760435499 | David Margolis | Individual | Pediatric Hematology & Oncology Physician | Madison, WI |
| 1215953450 | Susan Foerster | Individual | Pediatric Cardiology Physician | Madison, WI |
| 1063612448 | Anne Marsh | Individual | Pediatric Hematology & Oncology Physician | Madison, WI |
| 1629268420 | Maia Braden | Individual | Speech-Language Pathologist | Madison, WI |
| 1194918631 | Michael Eckrich | Individual | Pediatric Hematology & Oncology Physician | Madison, WI |
| 1437323748 | Karen Hawley | Individual | Pediatric Otolaryngology Physician | Madison, WI |
| 1316105075 | Lisa Keller | Individual | Pediatric Nurse Practitioner | Madison, WI |
| 1437305661 | University of Wisconsin System Non Payroll | Organization | Dental Clinic/Center | Madison, WI |
Verify this record
Cross-check NPI 1831286962 against the authoritative CMS record: view John Williams on the official NPPES registry .
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 or validate an NPI number.
Frequently asked questions
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Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2025-02-24.