NPPES file of Aug 9, 2026

John Robert Grogan, M.D.

Neuroradiology Physician · Waukesha, WI

John Robert Grogan, M.D. is a neuroradiology physician with a practice address in Waukesha, Wisconsin, and NPI 1417943895, issued on Sep 21, 2005. Check the license (Wisconsin 39053-020, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.

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

NPPES recordNPPES file of Aug 9, 2026
1417943895
Name
John Robert Grogan
Credential
M.D.
Primary taxonomy
Neuroradiology Physician 2085N0700X
License number
39053-020 WI
Self-reported in NPPES; status is on the state search
Practice location
725 American Ave, Waukesha, WI 53188
Phone
(262) 928-2400
Enumerated
Sep 21, 2005
Record last updated
Jul 13, 2026
Fax
(262) 928-7621
Medicaid ID
34343800 WI
Medicare enrollment
Enrolled (PECOS I20041013000847); accepts Medicare assignment
Medical or professional school
Medical College Of Wisconsin, 1996
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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8 nearest neuroradiology physician records → All 38 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 John Robert Grogan in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWisconsin Medical Examining Board
    Search for license 39053-020    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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Bills Medicare through 2 group practices

  1. Prohealth Medical Group IncWaukesha, WI
  2. Radiology Waukesha SCWaukesha, WI

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

John Robert Grogan among 38 neuroradiology physician records in Wisconsin

John Robert Grogan, M.D. is one of 38 neuroradiology physician records with a practice address in Wisconsin. 87% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.

  • NPI issued2005 · 0% of these records are older, 92% newer
  • In a Medicare fileYes · 87% of these records are
  • In the CMS Doctors and Clinicians fileYes · 84% of these records are
  • Graduated1996 · median 2003 among the 32 with a school on file
  • Record last updated2026 · 42% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2085N0700X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Neuroradiology Physician providers in Wisconsin

There are 38 neuroradiology physician records in Wisconsin.

All 38 in Wisconsin → Every provider in Waukesha → Neuroradiology Physician nationwide →

The 8 neuroradiology physician records with the nearest ZIP codes

  1. David Yenerich, M.D.Waukesha, WI 531881134115751
  2. Jaroslaw Janczy, MDMilwaukee, WI 532151871055533
  3. Jonathan Jennings, M.D.Milwaukee, WI 532151760419337
  4. Ryan SchmidMilwaukee, WI 532151063909265
  5. Daniel Destiche, MDMilwaukee, WI 532261700381316
  6. John Hamer, MDMilwaukee, WI 532261093763864
  7. Vladimir Ivanovic, M.D.Milwaukee, WI 532261578542767
  8. Leighton Mark, MDMilwaukee, WI 532261114970852

Common questions

What is John Robert Grogan, M.D.'s NPI number?

John Robert Grogan, M.D.'s National Provider Identifier (NPI) is 1417943895, issued on Sep 21, 2005. An NPI identifies a provider in billing; it is not a license.

Where is John Robert Grogan, M.D. located?

The NPPES record lists a practice address at 725 American Ave, Waukesha, WI, 53188. Phone: (262) 928-2400. Providers update this record themselves, so call before visiting.

How can I verify John Robert Grogan, M.D.'s license?

NPPES lists Wisconsin license number 39053-020, 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. Medicare files from data.cms.gov. 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.