Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
John Patrick Walsh, MD
Urology Physician in Wauwatosa, WI · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1497723035
See something wrong? Report a correction
Registry record
Entity type Individual (Type 1)
Name John Patrick Walsh
Credential MD
Sex Male
Practice address 2600 N Mayfair Rd, Suite 545, Wauwatosa, WI, 53226
Phone (414) 476-0430
Fax (414) 476-3242
Enumeration date Mar 9, 2006
Last updated in NPPES Feb 26, 2010
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 |
|---|---|---|---|
| 340005580 | Other | WI | MEDICARE RAILROAD |
| 30129700 | Medicaid | WI | - |
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
Is this the official NPI registry?
No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.
What specialty is John Walsh?
John Walsh is registered in NPPES with the primary taxonomy of Urology Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Other providers at this practice address
Browse all → Frederick Reeser Ophthalmology Physician · Milwaukee, WI NPI 1093710741 Sharath Raja Retina Specialist (Ophthalmology) Physician · Milwaukee, WI NPI 1417953829 James Barnett Dermatology Physician · Wauwatosa, WI NPI 1366442691 Barbara Reinke Clinical Psychologist · Milwaukee, WI NPI 1740251164 Sidney Herszenson Dermatology Physician · Milwaukee, WI NPI 1841264074 Cynthia Ebenhoch Dentist · Wauwatosa, WI NPI 1407824998 Timothy Mielke Dentist · Wauwatosa, WI NPI 1144298266 Christopher Walsh Urology Physician · Wauwatosa, WI NPI 1811966955
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2010-02-26.