Quick answers
- Which hospitals does Brian D. Kastner work at?
- Medicare's official clinician data lists Brian D. Kastner at 5 hospitals: Corewell Health Pennock Hospital, Corewell Health Reed City Hospital, Mercy Health Saint Mary's, Spectrum Health and Spectrum Health United Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Brian D. Kastner see patients?
- Medicare's clinician data lists 3 practice locations, including Holland, MI, Grand Rapids, MI and Reed City, MI. Call before your visit to confirm the address.
- What is Brian D. Kastner's specialty?
- Medicare lists Radiation Oncology as the primary specialty.
- Does Brian D. Kastner accept Medicare assignment?
- Yes. Medicare's clinician data says Brian D. Kastner 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 Brian D. Kastner?
- (616) 355-5330, as listed in official Medicare / NPI Registry data.
- What is Brian D. Kastner's NPI number?
- 1396767752. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Brian D. Kastner works
Medicare's Facility Affiliation Data lists Brian D. Kastner at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Corewell Health Pennock HospitalHastings, MI · Critical Access Hospital · CCN 231339
- Corewell Health Reed City HospitalReed City, MI · Critical Access Hospital · CCN 231323
- Mercy Health Saint Mary'sGrand Rapids, MI · Acute Care Hospital · CCN 230059
- Spectrum HealthGrand Rapids, MI · Acute Care Hospital · CCN 230038
- Spectrum Health United HospitalGreenville, MI · Acute Care Hospital · CCN 230035
Practice locations
Addresses where Brian D. Kastner is enrolled with Medicare (CMS data updated 2026-10-02).
- 12642 Riley StHolland, MI 49424 (616) 355‑5330
- 145 Michigan St NEGrand Rapids, MI 49503 (616) 486‑5750
- 4499 220th AveReed City, MI 49677 (231) 832‑5817
Group practices
Medicare enrollment lists Brian D. Kastner as a member of this group (CMS data updated 2026-10-02).
- Radiation Oncology Centers PC9 clinicians in the group
Specialties
- Radiation Oncologyprimary
Other radiation oncologists in Holland
Clinicians with the same Medicare primary specialty in Holland, MI — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Kansas School Of Med (kc/wich/sal) |
| Graduation year | 1996 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1396767752 |
| 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