JOHN HAMER MD
NPI 1093763864
Radiology - Neuroradiology in Milwaukee, WI
About John Hamer Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
JOHN HAMER MD (NPI 1093763864) is an individual neuroradiology provider in Milwaukee, Wisconsin, licensed in Wisconsin (42453) and active in the NPI registry since May 2006. He is enrolled in Medicare PECOS, is affiliated with St Josephs Community Hospital West Bend, and is a graduate of Medical College Of Wisconsin (1999).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 2
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
John Hamer Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
2Medicare enrollment records show John Hamer reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Milwaukee, WI 53226
- Reassigned Medicare billing, Wisconsin enrollment
- 3,983 clinicians in this Medicare group
Menomonee Falls, WI 53051
- Reassigned Medicare billing, Wisconsin enrollment
- 2,294 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 20
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Hospital Affiliations CMS Care Compare 4
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
St Josephs Community Hospital West Bend
Acute Care Hospitals · West Bend, WICommunity Memorial Hospital
Acute Care Hospitals · Menomonee Falls, WIFroedtert Memorial Lutheran Hospital
Acute Care Hospitals · Milwaukee, WIFroedtert Community Hospital
Acute Care Hospitals · New Berlin, WIMedicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Reported Quality Measures
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
MILWAUKEE, WI 53226
MILWAUKEE, WI 53226
MILWAUKEE, WI 53226
MILWAUKEE, WI 53226
MILWAUKEE, WI 53226
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is John Hamer's NPI number?
The NPI number for John Hamer is 1093763864. It was assigned to this individual provider in the NPPES registry on May 4, 2006.
Where is John Hamer located?
John Hamer practices at 9200 W Wisconsin Ave, Milwaukee, WI 53226. The listed phone number is (414) 805-2060.
What is John Hamer's specialty?
The primary specialty registered for this NPI is Radiology, specializing in Neuroradiology, with taxonomy code 2085N0700X.
Is John Hamer enrolled in Medicare?
Yes. John Hamer is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for John Hamer's services?
According to the CMS Revalidation Reassignment List (October 2026 release), John Hamer reassigns Medicare benefits to 2 organizations: The Medical College Of Wisconsin, Inc. (Milwaukee, WI) and Froedtert & the Medical College Of Wisconsin Community Physicians, Inc. (Menomonee Falls, WI). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for John Hamer's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does John Hamer accept?
Health plans from Anthem Blue Cross and Blue Shield list John Hamer as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
Is John Hamer affiliated with any hospitals?
According to CMS data, John Hamer is affiliated with St Josephs Community Hospital West Bend, Community Memorial Hospital, Froedtert Memorial Lutheran Hospital and Froedtert Community Hospital.
When was this NPI record last updated?
The NPPES record for John Hamer was last updated on February 25, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# John Hamer, MD · NPI 1093763864
Neuroradiology physician in Milwaukee, Wisconsin. Individual provider, active in the CMS NPPES registry since May 4, 2006.
## Identity
- **NPI:** 1093763864 (Entity type: Individual)
- **Enumerated:** May 4, 2006
- **Primary specialty:** Radiology - Neuroradiology · taxonomy 2085N0700X
- **State license:** 42453 (Wisconsin)
- **Sole proprietor:** No
## Practice location
- **Address:** 9200 W WISCONSIN AVE, Milwaukee, WI 53226-3522
- **Phone:** (414) 805-2060 · **Fax:** (414) 259-9290
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): The Medical College Of Wisconsin, Inc. (NPI 1699720086, Milwaukee, WI); Froedtert & the Medical College Of Wisconsin Community Physicians, Inc. (NPI 1568787448, Menomonee Falls, WI) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Medical College Of Wisconsin, class of 1999
## Record status
- **NPPES last updated:** February 25, 2022
- **Other identifiers:** Medicaid 1093763864 (WI); Medicaid 34643100 (WI)
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Source: [NPI Profile](https://npiprofile.com/npi/1093763864) · Data from the CMS NPPES public registry.