Quick answers
- Where does Calvin D. Ruff see patients?
- Medicare's clinician data lists 1 practice location in Kalamazoo, MI. Call before your visit to confirm the address.
- What is Calvin D. Ruff's specialty?
- Medicare lists Clinical Social Worker as the primary specialty.
- Does Calvin D. Ruff accept Medicare assignment?
- Yes. Medicare's clinician data says Calvin D. Ruff 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 Calvin D. Ruff?
- (269) 323-1954, as listed in official Medicare / NPI Registry data.
- What is Calvin D. Ruff's NPI number?
- 1831436336. 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 Calvin D. Ruff is enrolled with Medicare (CMS data updated 2026-10-02).
- 625 Harrison StKalamazoo, MI 49007 (269) 323‑1954
Specialties
- Clinical Social Workerprimary
Other clinical social workers in Kalamazoo
Clinicians with the same Medicare primary specialty in Kalamazoo, MI — not a recommendation.
Clinician information
| Graduation year | 2017 |
|---|---|
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1831436336 |
| 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