John Grogan, M.D.
NPI 1417943895 · Neuroradiology Physician · Waukesha, WI
Enrolled with Medicare as Practitioner - Diagnostic Radiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Grogan, M.D. is a Neuroradiology Physician provider in Waukesha, WI (NPI 1417943895).
Provider details
- NPI number
- 1417943895
- Entity type
- Individual
- Primary specialty
- Neuroradiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- License
- 39053-020 (WI)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
20 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
2,146 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| X-Ray of Chest, 1 View71045 | 398 | $8 |
| Ct Scan Head Or Brain Without Contrast70450 | 206 | $37 |
| Screening Mammography77067 | 189 | $34 |
| Screening 3d Breast Mammography77063 | 188 | $26 |
| Mri Scan of Brain Without Contrast70551 | 103 | $65 |
| Mri Scan of Brain Before and After Contrast70553 | 91 | $101 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-09-21
- Last updated
- 2007-07-08
Frequently asked questions
- What is John Grogan's NPI number?
- John Grogan's National Provider Identifier (NPI) is 1417943895, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Grogan's specialty?
- John Grogan is listed in the NPPES registry with a primary specialty of Neuroradiology Physician (Allopathic & Osteopathic Physicians).
- Where is John Grogan located?
- John Grogan's practice location on file with NPPES is 725 American Ave, Waukesha, WI 53188-5031.
- What is John Grogan's phone number?
- The practice phone number listed in the NPPES registry for John Grogan is (262) 928-2400.
- Does John Grogan accept Medicare?
- John Grogan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Grogan's NPI active?
- Yes — John Grogan's NPI (1417943895) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.