Quick answers
- Which hospitals does William D. Karczewski work at?
- Medicare's official clinician data lists William D. Karczewski at 5 hospitals: Cox Medical Centers, Munson Healthcare Cadillac Hospital, Munson Healthcare Otsego Memorial Hospital, Munson Medical Center and University of Michigan Health - West. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does William D. Karczewski see patients?
- Medicare's clinician data lists 4 practice locations, including Traverse City, MI and Marquette, MI. Call before your visit to confirm the address.
- What is William D. Karczewski's specialty?
- Medicare lists Diagnostic Radiology as the primary specialty.
- Does William D. Karczewski accept Medicare assignment?
- Yes. Medicare's clinician data says William D. Karczewski accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- What is the phone number for William D. Karczewski?
- (231) 935-5000, as listed in official Medicare / NPI Registry data.
- What is William D. Karczewski's NPI number?
- 1275896490. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where William D. Karczewski works
Medicare's Facility Affiliation Data lists William D. Karczewski at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Cox Medical CentersSpringfield, MO · Acute Care Hospital · CCN 260040
- Munson Healthcare Cadillac HospitalCadillac, MI · Acute Care Hospital · CCN 230081
- Munson Healthcare Otsego Memorial HospitalGaylord, MI · Acute Care Hospital · CCN 230133
- Munson Medical CenterTraverse City, MI · Acute Care Hospital · CCN 230097
- University of Michigan Health - WestWyoming, MI · Acute Care Hospital · CCN 230236
Practice locations
Addresses where William D. Karczewski is enrolled with Medicare (CMS data updated 2026-10-02).
- 1105 6th StTraverse City, MI 49684 (231) 935‑5000
- 581 Lakewood LnMarquette, MI 49855 (952) 595‑1100
- 9304 Lawrence DrTraverse City, MI 49685 (888) 972‑9700
- 9733 Crescent Shores RdTraverse City, MI 49685 (952) 595‑1100
Group practices
Medicare enrollment lists William D. Karczewski as a member of these groups (CMS data updated 2026-10-02).
- Virtual Radiologic Professionals LLC397 clinicians in the group
- Advanced Radiology P A188 clinicians in the group
- Grand Traverse Radiologists PC32 clinicians in the group
Specialties
- Diagnostic Radiologyprimary
Other radiologists in Traverse City
Clinicians with the same Medicare primary specialty in Traverse City, MI — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Wayne State University School Of Medicine |
| Graduation year | 2012 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1275896490 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians