Quick answers
- Which hospitals does Alexander Grimm work at?
- Medicare's official clinician data lists Alexander Grimm at 5 hospitals: Bon Secours Community Hospital, Good Samaritan Hospital of Suffern, Healthalliance Hospital Marys Avenue Campus, St Anthony Community Hospital and Westchester Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Alexander Grimm see patients?
- Medicare's clinician data lists 10 practice locations, including Valhalla, NY, Kingston, NY and Warwick, NY. Call before your visit to confirm the address.
- What is Alexander Grimm's specialty?
- Medicare lists Diagnostic Radiology as the primary specialty.
- Does Alexander Grimm accept Medicare assignment?
- Yes. Medicare's clinician data says Alexander Grimm 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 Alexander Grimm?
- (845) 331-3131, as listed in official Medicare / NPI Registry data.
- What is Alexander Grimm's NPI number?
- 1326123951. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Alexander Grimm works
Medicare's Facility Affiliation Data lists Alexander Grimm at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Bon Secours Community HospitalPort Jervis, NY · Acute Care Hospital · CCN 330135
- Good Samaritan Hospital of SuffernSuffern, NY · Acute Care Hospital · CCN 330158
- Healthalliance Hospital Marys Avenue CampusKingston, NY · Acute Care Hospital · CCN 330224
- St Anthony Community HospitalWarwick, NY · Acute Care Hospital · CCN 330205
- Westchester Medical CenterValhalla, NY · Acute Care Hospital · CCN 330234
Practice locations
Addresses where Alexander Grimm is enrolled with Medicare (CMS data updated 2026-10-02). The first 5 of 10; the Medicare profile lists all.
- 100 Woods RdValhalla, NY 10595
- 105 Marys AveKingston, NY 12401 (845) 331‑3131
- 15 Maple AveWarwick, NY 10990 (845) 986‑2276
- 18514 80th RdJamaica, NY 11432 (818) 639‑2901
- 241 N RdPoughkeepsie, NY 12601 (845) 483‑5000
Group practices
Medicare enrollment lists Alexander Grimm as a member of these groups (CMS data updated 2026-10-02).
- Westchester Medical Center Advanced Physician Services PC897 clinicians in the group
- Golden State Imaging Associates Inc239 clinicians in the group
- Renaissance Imaging Medical Associates Inc124 clinicians in the group
Specialties
- Diagnostic Radiologyprimary
Other radiologists in Valhalla
Clinicians with the same Medicare primary specialty in Valhalla, NY — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Saint Louis University School Of Medicine |
| Graduation year | 1999 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1326123951 |
| 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