Quick answers
- Which hospitals does James M. Grannell work at?
- Medicare's official clinician data lists James M. Grannell at 1 hospital: Mile Bluff Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does James M. Grannell see patients?
- Medicare's clinician data lists 3 practice locations, including Mauston, WI and Wisconsin Dells, WI. Call before your visit to confirm the address.
- What is James M. Grannell's specialty?
- Medicare lists Orthopedic Surgery as the primary specialty.
- Does James M. Grannell accept Medicare assignment?
- Yes. Medicare's clinician data says James M. Grannell 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 James M. Grannell?
- (608) 847-1852, as listed in official Medicare / NPI Registry data.
- What is James M. Grannell's NPI number?
- 1083662019. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where James M. Grannell works
Medicare's Facility Affiliation Data lists James M. Grannell at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Mile Bluff Medical CenterMauston, WI · Acute Care Hospital · CCN 520109
Practice locations
Addresses where James M. Grannell is enrolled with Medicare (CMS data updated 2026-10-02).
- 1040 Division StMauston, WI 53948 (608) 847‑1852
- 1050 Division StMauston, WI 53948
- 28 Commerce StWisconsin Dells, WI 53965 (608) 254‑8888
Group practices
Medicare enrollment lists James M. Grannell as a member of this group (CMS data updated 2026-10-02).
- Mile Bluff Medical Center Inc87 clinicians in the group
Specialties
- Orthopedic Surgeryprimary
Other orthopedic surgeons in Wisconsin
Clinicians with the same Medicare primary specialty in Wisconsin — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Medical school | Michigan State University College Of Osteopathic Medicine |
| Graduation year | 1978 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1083662019 |
| 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