MICHAEL R DEFRANK M.D.
NPI 1841258969
Emergency Medicine in Milwaukee, WI
About Michael R Defrank M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MICHAEL R DEFRANK M.D. (NPI 1841258969) is an individual emergency medicine provider in Milwaukee, Wisconsin, licensed in Wisconsin (41138-020) and active in the NPI registry since May 2006. He is enrolled in Medicare PECOS, is affiliated with St Vincent Hospital, and is a graduate of Medical College Of Wisconsin (1996).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 5
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
Michael R Defrank M.d. 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 Michael Defrank reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Pleasant Prairie, WI 53158
- Reassigned Medicare billing, Wisconsin enrollment
- 104 clinicians in this Medicare group
Sturgeon Bay, WI 54235
- Reassigned Medicare billing, Wisconsin enrollment
- 131 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 5
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 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
St Vincent Hospital
Acute Care Hospitals · Green Bay, WISt Mary's Hospital Medical Center
Acute Care Hospitals · Green Bay, WIPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 53202 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.
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 Michael Defrank's NPI number?
The NPI number for Michael Defrank is 1841258969. It was assigned to this individual provider in the NPPES registry on May 1, 2006.
Where is Michael Defrank located?
Michael Defrank practices at 111 E Wisconsin Ave Suite 2000, Milwaukee, WI 53202. The listed phone number is (414) 290-6720.
What is Michael Defrank's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is Michael Defrank enrolled in Medicare?
Yes. Michael Defrank 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 Michael Defrank's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Michael Defrank reassigns Medicare benefits to 2 organizations: Vituity-Wisconsin Em Sc (Pleasant Prairie, WI) and Door County Memorial Hospital (Sturgeon Bay, 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 Michael Defrank's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Michael Defrank affiliated with any hospitals?
According to CMS data, Michael Defrank is affiliated with St Vincent Hospital and St Mary's Hospital Medical Center.
When was this NPI record last updated?
The NPPES record for Michael Defrank was last updated on December 19, 2021. 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.
# Michael R Defrank, M.D. · NPI 1841258969
Emergency Medicine physician in Milwaukee, Wisconsin. Individual provider, active in the CMS NPPES registry since May 1, 2006.
## Identity
- **NPI:** 1841258969 (Entity type: Individual)
- **Enumerated:** May 1, 2006
- **Primary specialty:** Emergency Medicine · taxonomy 207P00000X
- **State license:** 41138-020 (Wisconsin)
- **Sole proprietor:** No
## Practice location
- **Address:** 111 E WISCONSIN AVE, SUITE 2000, Milwaukee, WI 53202-4815
- **Phone:** (414) 290-6720 · **Fax:** (414) 290-6755
## 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): Vituity-Wisconsin Em Sc (NPI 1326730664, Pleasant Prairie, WI); Door County Memorial Hospital (NPI 1093743874, Sturgeon Bay, WI) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Medical College Of Wisconsin, class of 1996
## Record status
- **NPPES last updated:** December 19, 2021
- **Other identifiers:** Medicaid 32579300 (WI); Other 930079993 (WI); Other P00238576 (WI); and 2 more
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Source: [NPI Profile](https://npiprofile.com/npi/1841258969) · Data from the CMS NPPES public registry.