DR. THOMAS JOSEPH HAZENFIELD DO
NPI 1730876731
Emergency Medicine in Milwaukee, WI
About Dr. Thomas Joseph Hazenfield Do NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. THOMAS JOSEPH HAZENFIELD DO (NPI 1730876731) is an individual emergency medicine provider in Milwaukee, Wisconsin, licensed in Wisconsin (82208-021) and active in the NPI registry since April 2023. He is enrolled in Medicare PECOS, is affiliated with St Josephs Community Hospital West Bend, and maintains a secondary practice location in Chicago.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 1
Other Identifiers 1
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
Dr. Thomas Joseph Hazenfield Do 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 Thomas Hazenfield 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.
Hospital Affiliations CMS Care Compare 2
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, WIFroedtert Community Hospital
Acute Care Hospitals · New Berlin, WIPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 53226 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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 Thomas Hazenfield's NPI number?
The NPI number for Thomas Hazenfield is 1730876731. It was assigned to this individual provider in the NPPES registry on April 19, 2023.
Where is Thomas Hazenfield located?
Thomas Hazenfield practices at 9200 W Wisconsin Ave, Milwaukee, WI 53226. The listed phone number is (414) 955-6450.
What is Thomas Hazenfield's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is Thomas Hazenfield enrolled in Medicare?
Yes. Thomas Hazenfield 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 Thomas Hazenfield's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Thomas Hazenfield 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 Thomas Hazenfield's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Thomas Hazenfield accept?
Health plans from Anthem Blue Cross and Blue Shield list Thomas Hazenfield 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 Thomas Hazenfield affiliated with any hospitals?
According to CMS data, Thomas Hazenfield is affiliated with St Josephs Community Hospital West Bend and Froedtert Community Hospital.
When was this NPI record last updated?
The NPPES record for Thomas Hazenfield was last updated on July 28, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.
# Dr. Thomas Joseph Hazenfield, DO · NPI 1730876731
Emergency Medicine physician in Milwaukee, Wisconsin. Individual provider, active in the CMS NPPES registry since April 19, 2023.
## Identity
- **NPI:** 1730876731 (Entity type: Individual)
- **Enumerated:** April 19, 2023
- **Primary specialty:** Emergency Medicine · taxonomy 207P00000X
- **State license:** 82208-021 (Wisconsin)
- **Sole proprietor:** No
## Practice location
- **Address:** 9200 W WISCONSIN AVE, Milwaukee, WI 53226-3522
- **Phone:** (414) 955-6450 · **Fax:** (414) 955-0082
## 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:** Midwestern University, Chicago College Of Osteopathic Med, class of 2023
## Record status
- **NPPES last updated:** July 28, 2026
- **Other identifiers:** Medicaid 1730876731 (WI)
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Source: [NPI Profile](https://npiprofile.com/npi/1730876731) · Data from the CMS NPPES public registry.