NPPES file of Aug 9, 2026

James Mateer, M.D.

Emergency Medicine Physician · Waukesha, WI

James Mateer, M.D. is an emergency medicine physician with a practice address in Waukesha, Wisconsin, and NPI 1184604456, issued on Jan 20, 2006. Check the license (Wisconsin 24211-020, as entered in NPPES) on the Wisconsin Medical Examining Board; the federal record below is the public data PlainDoctor holds for this provider.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1184604456
Name
James Mateer
Credential
M.D.
Primary taxonomy
Emergency Medicine Physician 207P00000X
License number
24211-020 WI
Self-reported in NPPES; status is on the state search
Practice location
725 American Ave, Waukesha, WI 53188
Phone
(262) 928-2475
Enumerated
Jan 20, 2006
Record last updated
Jan 28, 2014 (not updated in 12 years: call before relying on the address or phone)
Fax
(262) 928-5697
Medicaid ID
30491400 WI
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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8 nearest emergency medicine physician records → All 1,464 in Wisconsin → Look up another NPI →

Also registered at 725 American Ave

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Mikayla Abbeduto, DPTPhysical Therapist1316513955
  2. Zuber Ali, M.D.Cardiovascular Disease Physician1548536204
  3. Heather AvelloneFamily Nurse Practitioner1114499001
  4. Mark Bakalars, M.D.Vascular & Interventional Radiology Physician1174518724
  5. Lisa BakerAdult Health Nurse Practitioner1588973275
  6. Melissa Becker, PA-CPhysician Assistant1780132944

Verify James Mateer in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWisconsin Medical Examining Board
    Search for license 24211-020    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Wisconsin license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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James Mateer among 1,464 emergency medicine physician records in Wisconsin

James Mateer, M.D. is one of 1,464 emergency medicine physician records with a practice address in Wisconsin. 79% 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 2006, is newer than 8% of them.

  • NPI issued2006 · 8% of these records are older, 58% newer
  • In a Medicare fileNo · 79% of these records are
  • In the CMS Doctors and Clinicians fileNo · 58% of these records are
  • Record last updated2014 · 50% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207P00000X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Emergency Medicine Physician providers in Wisconsin

There are 1,464 emergency medicine physician records in Wisconsin. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

All 1,464 in Wisconsin → Every provider in Waukesha → Emergency Medicine Physician nationwide →

The 8 emergency medicine physician records with the nearest ZIP codes

  1. Alan Abdulla, D.O.Waukesha, WI 531881508164419
  2. Michael Berger, M.D.Waukesha, WI 531881821170333
  3. Matthew Deluhery, M.D.Waukesha, WI 531881477725547
  4. Carlos Feliciano, M.D.Waukesha, WI 531881114189701
  5. Timothy Helz, M.D.Waukesha, WI 531881306828017
  6. Brian Huckstorf, M.D.Waukesha, WI 531881447236492
  7. Steven Kulick, M.D.Waukesha, WI 531881043297658
  8. Keith Mausner, M.D.Waukesha, WI 531881164409843

Common questions

What is James Mateer, M.D.'s NPI number?

James Mateer, M.D.'s National Provider Identifier (NPI) is 1184604456, issued on Jan 20, 2006. An NPI identifies a provider in billing; it is not a license.

Where is James Mateer, M.D. located?

The NPPES record lists a practice address at 725 American Ave, Waukesha, WI, 53188. Phone: (262) 928-2475. Providers update this record themselves, so call before visiting.

How can I verify James Mateer, M.D.'s license?

NPPES lists Wisconsin license number 24211-020, 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.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.