JOHN T HAMBROOK MD
NPI 1477760577
Pediatrics - Pediatric Cardiology in Wauwatosa, WI
About John T Hambrook Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
JOHN T HAMBROOK MD (NPI 1477760577) is an individual pediatric cardiology provider in Wauwatosa, Wisconsin, licensed in Wisconsin (53035) and active in the NPI registry since May 2007. He is enrolled in Medicare PECOS.
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 (PECOS)
John T Hambrook Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
3Medicare enrollment records show John Hambrook reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
West Allis, WI 53227
- Reassigned Medicare billing, Wisconsin enrollment
- 4,609 clinicians in this Medicare group
Milwaukee, WI 53209
- Reassigned Medicare billing, Wisconsin enrollment
- 1,615 clinicians in this Medicare group
Saint Francis, WI 53235
- Reassigned Medicare billing, Wisconsin enrollment
- 960 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.
Other Providers at the Same Location NPPES 18
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
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 Hambrook's NPI number?
The NPI number for John Hambrook is 1477760577. It was assigned to this individual provider in the NPPES registry on May 17, 2007.
Where is John Hambrook located?
John Hambrook practices at 1055 N Mayfair Rd, Wauwatosa, WI 53226. The listed phone number is (414) 479-2300.
What is John Hambrook's specialty?
The primary specialty registered for this NPI is Pediatrics, specializing in Pediatric Cardiology, with taxonomy code 2080P0202X.
Is John Hambrook enrolled in Medicare?
Yes. John Hambrook is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for John Hambrook's services?
According to the CMS Revalidation Reassignment List (October 2026 release), John Hambrook reassigns Medicare benefits to 3 organizations: Aurora Medical Group, Inc. (West Allis, WI), Aurora Advanced Healthcare, Inc. (Milwaukee, WI) and Lakeshore Medical Clinic, LLC (Saint Francis, 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 Hambrook's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does John Hambrook accept?
Health plans from Anthem Blue Cross and Blue Shield, Aspirus Health Plan, CareSource (Common Ground Healthcare), HealthPartners and Network Health and 2 other insurers list John Hambrook 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.
When was this NPI record last updated?
The NPPES record for John Hambrook was last updated on May 27, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 17 months 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 T Hambrook, MD · NPI 1477760577
Pediatric Cardiology physician in Wauwatosa, Wisconsin. Individual provider, active in the CMS NPPES registry since May 17, 2007.
## Identity
- **NPI:** 1477760577 (Entity type: Individual)
- **Enumerated:** May 17, 2007
- **Primary specialty:** Pediatrics - Pediatric Cardiology · taxonomy 2080P0202X
- **State license:** 53035 (Wisconsin)
- **Sole proprietor:** No
## Practice location
- **Address:** 1055 N MAYFAIR RD, Wauwatosa, WI 53226-3436
- **Phone:** (414) 479-2300
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 3 organizations under Medicare reassignment (form CMS-855R): Aurora Medical Group, Inc. (NPI 1457592735, West Allis, WI); Aurora Advanced Healthcare, Inc. (NPI 1265629133, Milwaukee, WI); Lakeshore Medical Clinic, LLC (NPI 1003861188, Saint Francis, WI) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** May 27, 2025
- **Other identifiers:** Medicaid 100003472 (WI); Medicaid 1477760577 (WI)
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Source: [NPI Profile](https://npiprofile.com/npi/1477760577) · Data from the CMS NPPES public registry.