John M. Serrano, P.A.
Physician Assistant · Milwaukee, WI
John M. Serrano, P.A. is a physician assistant with a practice address in Milwaukee, Wisconsin, and NPI 1013114560, issued on Jun 28, 2007. Check the license (Wisconsin 1333, as entered in NPPES) with the Wisconsin board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- John M. Serrano
- Credential
- P.A.
- Primary taxonomy
- Physician Assistant 363A00000X
- License number
- 1333 WI
Self-reported in NPPES; status is on the state search - Practice location
- 875 W Layton Ave, Milwaukee, WI 53221
- Phone
- (414) 489-3800
- Enumerated
- Jun 28, 2007
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (414) 489-3811
- Medicare enrollment
- Enrolled (PECOS I20160913001450); accepts Medicare assignment
- Medical or professional school
- George Washington University School Of Medicine, 1993
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 3,475 in Wisconsin → Look up another NPI →
Also registered at 875 W Layton Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify John M. Serrano in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Wisconsin board licenses this profession
Search for license 1333Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through one group practice
- Froedtert Andthe Medical College OF Wisconsin Community Physicians IncWauwatosa, WI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
John M. Serrano among 3,475 physician assistant records in Wisconsin
John M. Serrano, P.A. is one of 3,475 physician assistant records with a practice address in Wisconsin. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 24% of them.
- NPI issued2007 · 24% of these records are older, 72% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 72% of these records are
- Graduated1993 · median 2016 among the 2,491 with a school on file
- Record last updated2007 · 38% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363A00000X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
821 physician assistant records list a practice address in Milwaukee
They are 821 of the 18,389 NPPES records with a practice address in Milwaukee, and 3,475 physician assistant records in Wisconsin.
All 3,475 in Wisconsin → Every provider in Milwaukee → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Gregory Cavanaugh, PA-CGreenfield, WI 532211124084462
- Kaylene Frey, PA-CGreenfield, WI 532211245463298
- Ronald Gabel, PAMilwaukee, WI 532211417962259
- Ann Lebaron, PA-CGreenfield, WI 532211851354013
- Kimberly Marshall, PA-CGreenfield, WI 532211255611018
- Theresa Niemczyk, PA-CGreenfield, WI 532211366744716
- Erika Palmtag, PA-CGreenfield, WI 532211740293802
- Alejandra SotoGreenfield, WI 532211972334423
Common questions
What is John M. Serrano, P.A.'s NPI number?
John M. Serrano, P.A.'s National Provider Identifier (NPI) is 1013114560, issued on Jun 28, 2007. An NPI identifies a provider in billing; it is not a license.
Where is John M. Serrano, P.A. located?
The NPPES record lists a practice address at 875 W Layton Ave, Milwaukee, WI, 53221. Phone: (414) 489-3800. Providers update this record themselves, so call before visiting.
How can I verify John M. Serrano, P.A.'s license?
NPPES lists Wisconsin license number 1333, as entered by the provider. Search the Wisconsin board that licenses this profession; the NPPES record confirms identity only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. 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.