John Hamer, MD
NPI 1093763864 · Neuroradiology Physician · Milwaukee, WI
Enrolled with Medicare as Practitioner - Diagnostic Radiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Hamer, MD is a Neuroradiology Physician provider in Milwaukee, WI (NPI 1093763864).
Provider details
- NPI number
- 1093763864
- Entity type
- Individual
- Primary specialty
- Neuroradiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 42453 (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
1,173 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) |
|---|---|---|
| Ct Scan Head Or Brain Without Contrast70450 | 233 | $37 |
| Mri Scan of Brain Without Contrast70551 | 128 | $65 |
| Screening 3d Breast Mammography77063 | 123 | $26 |
| Screening Mammography77067 | 123 | $58 |
| Ct Scan of Upper Spine Without Contrast72125 | 76 | $44 |
| Diagnostic Digital Breast Tomosynthesis, Unilateral Or Bilateral (list Separately in Addition to 77065 Or 77066)G0279 | 63 | $27 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-05-04
- Last updated
- 2022-02-25
- Certified
- 2022-02-25
Frequently asked questions
- What is John Hamer's NPI number?
- John Hamer's National Provider Identifier (NPI) is 1093763864, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Hamer's specialty?
- John Hamer is listed in the NPPES registry with a primary specialty of Neuroradiology Physician (Allopathic & Osteopathic Physicians).
- Where is John Hamer located?
- John Hamer's practice location on file with NPPES is 9200 W Wisconsin Ave, Milwaukee, WI 53226-3522.
- What is John Hamer's phone number?
- The practice phone number listed in the NPPES registry for John Hamer is (414) 805-2060.
- Does John Hamer accept Medicare?
- John Hamer is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Hamer's NPI active?
- Yes — John Hamer's NPI (1093763864) is active in the NPPES registry as of the last update on 2022-02-25.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.