Quick answers
- Which hospitals does John D. Maskill work at?
- Medicare's official clinician data lists John D. Maskill at 2 hospitals: Sheridan Community Hospital and Spectrum Health. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does John D. Maskill see patients?
- Medicare's clinician data lists 6 practice locations, including Grand Rapids, MI and Sheridan, MI. Call before your visit to confirm the address.
- What is John D. Maskill's specialty?
- Medicare lists Orthopedic Surgery as the primary specialty.
- Does John D. Maskill accept Medicare assignment?
- Yes. Medicare's clinician data says John D. Maskill 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 John D. Maskill?
- (989) 291-1366, as listed in official Medicare / NPI Registry data.
- What is John D. Maskill's NPI number?
- 1669422077. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where John D. Maskill works
Medicare's Facility Affiliation Data lists John D. Maskill at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Sheridan Community HospitalSheridan, MI · Critical Access Hospital · CCN 231312
- Spectrum HealthGrand Rapids, MI · Acute Care Hospital · CCN 230038
Practice locations
Addresses where John D. Maskill is enrolled with Medicare (CMS data updated 2026-10-02). The first 5 of 6; the Medicare profile lists all.
- 1525 E Beltline Ave NEGrand Rapids, MI 49525 (989) 291‑1366
- 301 N Main StSheridan, MI 48884 (989) 291‑3261
- 5060 Cascade RdGrand Rapids, MI 49546
- 5060 Cascade Rd, Suite AGrand Rapids, MI 49546
- 5060 Cascade Rd SEGrand Rapids, MI 49546
Group practices
Medicare enrollment lists John D. Maskill as a member of these groups (CMS data updated 2026-10-02).
- Center for Physical Rehabilitation and Therapy LP369 clinicians in the group
- Center for Physical Rehabilitation Inc357 clinicians in the group
- Sheridan Community Hospital18 clinicians in the group
Specialties
- Orthopedic Surgeryprimary
Other orthopedic surgeons in Grand Rapids
Clinicians with the same Medicare primary specialty in Grand Rapids, MI — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Wayne State University School Of Medicine |
| Graduation year | 2001 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1669422077 |
| 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