WILLIAM CALAWERTS MD
NPI 1487273462
Family Medicine in Milwaukee, WI
About William Calawerts Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
WILLIAM CALAWERTS MD (NPI 1487273462) is an individual family medicine provider in Milwaukee, Wisconsin, licensed in Wisconsin (83701) and active in the NPI registry since April 2020. He is enrolled in Medicare PECOS, is affiliated with Froedtert Memorial Lutheran Hospital, and is a graduate of Albany Medical College Of Union University (2020).
NPPES Registry Identity
Specialties & Licenses
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
William Calawerts 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
3Medicare enrollment records show William Calawerts reassigns Medicare billing to 3 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
Milwaukee, WI 53222
- Reassigned Medicare billing, Wisconsin enrollment
- 88 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
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Froedtert Memorial Lutheran Hospital
Acute Care Hospitals · Milwaukee, 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.
Medicare 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.
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 William Calawerts's NPI number?
The NPI number for William Calawerts is 1487273462. It was assigned to this individual provider in the NPPES registry on April 10, 2020.
Where is William Calawerts located?
William Calawerts practices at 9200 W Wisconsin Ave, Milwaukee, WI 53226. The listed phone number is (414) 955-8664.
What is William Calawerts's specialty?
The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.
Is William Calawerts enrolled in Medicare?
Yes. William Calawerts 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 William Calawerts's services?
According to the CMS Revalidation Reassignment List (October 2026 release), William Calawerts reassigns Medicare benefits to 3 organizations: The Medical College Of Wisconsin, Inc. (Milwaukee, WI), Outreach Community Health Centers, 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 William Calawerts's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does William Calawerts accept?
Health plans from Anthem Blue Cross and Blue Shield, Network Health and UnitedHealthcare list William Calawerts 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 William Calawerts affiliated with any hospitals?
According to CMS data, William Calawerts is affiliated with Froedtert Memorial Lutheran Hospital.
When was this NPI record last updated?
The NPPES record for William Calawerts was last updated on June 13, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.
# William Calawerts, MD · NPI 1487273462
Family Medicine physician in Milwaukee, Wisconsin. Individual provider, active in the CMS NPPES registry since April 10, 2020.
## Identity
- **NPI:** 1487273462 (Entity type: Individual)
- **Enumerated:** April 10, 2020
- **Primary specialty:** Family Medicine · taxonomy 207Q00000X
- **State license:** 83701 (Wisconsin)
- **Sole proprietor:** No
## Practice location
- **Address:** 9200 W WISCONSIN AVE, Milwaukee, WI 53226-3522
- **Phone:** (414) 955-8664 · **Fax:** (414) 955-0064
## 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:** 3 organizations under Medicare reassignment (form CMS-855R): The Medical College Of Wisconsin, Inc. (NPI 1699720086, Milwaukee, WI); Outreach Community Health Centers, Inc. (NPI 1558231563, 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:** Albany Medical College Of Union University, class of 2020
## Record status
- **NPPES last updated:** June 13, 2024
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Source: [NPI Profile](https://npiprofile.com/npi/1487273462) · Data from the CMS NPPES public registry.