Quick answers
- Where does Matthew Killmer see patients?
- Medicare's clinician data lists 1 practice location in Grand Rapids, MI. Call before your visit to confirm the address.
- What is Matthew Killmer's specialty?
- Medicare lists Psychiatry as the primary specialty.
- Does Matthew Killmer accept Medicare assignment?
- Yes. Medicare's clinician data says Matthew Killmer 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 Matthew Killmer?
- (616) 455-5000, as listed in official Medicare / NPI Registry data.
- What is Matthew Killmer's NPI number?
- 1134797897. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Practice locations
Addresses where Matthew Killmer is enrolled with Medicare (CMS data updated 2026-10-02).
- 300 68th St SEGrand Rapids, MI 49548 (616) 455‑5000
Group practices
Medicare enrollment lists Matthew Killmer as a member of this group (CMS data updated 2026-10-02).
- Pine Rest Christian Mental Health Services353 clinicians in the group
Specialties
- Psychiatryprimary
Other psychiatrists in Grand Rapids
Clinicians with the same Medicare primary specialty in Grand Rapids, MI — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Graduation year | 2021 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1134797897 |
| 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
- 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