William C. Leach, M.D.
Pediatrics Physician · Milwaukee, WI
William C. Leach, M.D. is a pediatrics physician with a practice address in Milwaukee, Wisconsin, and NPI 1124013891, issued on Sep 19, 2005. Check the license (Wisconsin 25333, as entered in NPPES) on the Wisconsin Medical Examining Board; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- William C. Leach
- Credential
- M.D.
- Primary taxonomy
- Pediatrics Physician 208000000X
- License number
- 25333 WI
Self-reported in NPPES; status is on the state search - Practice location
- 10909 W Bluemound RD, Milwaukee, WI 53226
- Phone
- (414) 258-0606
- Enumerated
- Sep 19, 2005
- Record last updated
- Jul 13, 2026
- Fax
- (414) 258-1953
- Medicaid ID
- 30018700 WI
- Entity
- Type 1 · individual
8 nearest pediatrics physician records → All 1,203 in Wisconsin → Look up another NPI →
Verify William C. Leach in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining Board
Search for license 25333Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
William C. Leach among 1,203 pediatrics physician records in Wisconsin
William C. Leach, M.D. is one of 1,203 pediatrics physician records with a practice address in Wisconsin. 20% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 89% newer
- In a Medicare fileNo · 20% of these records are
- In the CMS Doctors and Clinicians fileNo · 12% of these records are
- Record last updated2026 · 52% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208000000X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
232 pediatrics physician records list a practice address in Milwaukee
They are 232 of the 18,389 NPPES records with a practice address in Milwaukee, and 1,203 pediatrics physician records in Wisconsin. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 1,203 in Wisconsin → Every provider in Milwaukee → Pediatrics Physician nationwide →
The 8 pediatrics physician records with the nearest ZIP codes
- Ravit Boger, M.D.Milwaukee, WI 532261508822297
- Rosellen Choi, M.D.Milwaukee, WI 532261376537142
- Emily Densmore, MDMilwaukee, WI 532261144272485
- Matthew LevyMilwaukee, WI 532261366442196
- John Martin, M.D.Wauwatosa, WI 532261841257458
- Sheryl Moss, M.D.Wauwatosa, WI 532261174503841
- Timothy Richer, M.D.Wauwatosa, WI 532261609833904
- Kristine Saudek, M.D.Milwaukee, WI 532261376599357
Common questions
What is William C. Leach, M.D.'s NPI number?
William C. Leach, M.D.'s National Provider Identifier (NPI) is 1124013891, issued on Sep 19, 2005. An NPI identifies a provider in billing; it is not a license.
Where is William C. Leach, M.D. located?
The NPPES record lists a practice address at 10909 W Bluemound RD, Milwaukee, WI, 53226. Phone: (414) 258-0606. Providers update this record themselves, so call before visiting.
How can I verify William C. Leach, M.D.'s license?
NPPES lists Wisconsin license number 25333, as entered by the provider. Search the Wisconsin Medical Examining Board at https://dsps.wi.gov/Pages/BoardsCouncils/MEB/Default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.