Quick answers
- Which hospitals does Douglas A. Winstanley work at?
- Medicare's official clinician data lists Douglas A. Winstanley at 1 hospital: Spectrum Health. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Douglas A. Winstanley see patients?
- Medicare's clinician data lists 2 practice locations, including Holland, MI and Grandville, MI. Call before your visit to confirm the address.
- What is Douglas A. Winstanley's specialty?
- Medicare lists Dermatology as the primary specialty.
- Does Douglas A. Winstanley accept Medicare assignment?
- Yes. Medicare's clinician data says Douglas A. Winstanley 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 Douglas A. Winstanley?
- (616) 395-9379, as listed in official Medicare / NPI Registry data.
- What is Douglas A. Winstanley's NPI number?
- 1609855402. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Douglas A. Winstanley works
Medicare's Facility Affiliation Data lists Douglas A. Winstanley at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Spectrum HealthGrand Rapids, MI · Acute Care Hospital · CCN 230038
Practice locations
Addresses where Douglas A. Winstanley is enrolled with Medicare (CMS data updated 2026-10-02).
- 3290 N Wellness Dr, Bldg D Suite 240Holland, MI 49424 (616) 395‑9379
- 3434 Rivertown Point Ct SWGrandville, MI 49418 (616) 257‑3344
Group practices
Medicare enrollment lists Douglas A. Winstanley as a member of this group (CMS data updated 2026-10-02).
- Jack a Dekkinga MD PC20 clinicians in the group
Specialties
- Dermatologyprimary
Other dermatologists in Holland
Clinicians with the same Medicare primary specialty in Holland, MI — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Graduation year | 2000 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1609855402 |
| 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