Quick answers
- Which hospitals does Dean Kolnick work at?
- Medicare's official clinician data lists Dean Kolnick at 4 hospitals: Aspirus Divine Savior Hospital, Garnet Health Medical Center, Hudson Valley Hospital Center and Westchester Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Dean Kolnick see patients?
- Medicare's clinician data lists 10 practice locations, including Valhalla, NY, Antigo, WI and Medford, WI. Call before your visit to confirm the address.
- What is Dean Kolnick's specialty?
- Medicare lists Diagnostic Radiology as the primary specialty.
- Does Dean Kolnick accept Medicare assignment?
- Yes. Medicare's clinician data says Dean Kolnick 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 Dean Kolnick?
- (715) 623-2331, as listed in official Medicare / NPI Registry data.
- What is Dean Kolnick's NPI number?
- 1538477906. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Dean Kolnick works
Medicare's Facility Affiliation Data lists Dean Kolnick at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Aspirus Divine Savior HospitalPortage, WI · Acute Care Hospital · CCN 520041
- Garnet Health Medical CenterMiddletown, NY · Acute Care Hospital · CCN 330126
- Hudson Valley Hospital CenterCortlandt Manor, NY · Acute Care Hospital · CCN 330267
- Westchester Medical CenterValhalla, NY · Acute Care Hospital · CCN 330234
Practice locations
Addresses where Dean Kolnick 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
- 112 E 5th AveAntigo, WI 54409 · Langlade Hospital - Hotel Dieu of St Joseph of Antigo Wisconsin (715) 623‑2331
- 135 S Gibson StMedford, WI 54451 (715) 748‑8100
- 143 S Gibson StMedford, WI 54451 (715) 748‑8100
- 2150 Pennsylvania Ave NWWashington, DC 20037 (202) 741‑2600
Group practices
Medicare enrollment lists Dean Kolnick as a member of these groups (CMS data updated 2026-10-02).
- Westchester Medical Center Advanced Physician Services PC897 clinicians in the group
- Medical Faculty Associates, Inc672 clinicians in the group
- Aspirus Rhinelander and Tomahawk Hospitals and Clinics, Inc.574 clinicians in the group
- Aspirus Ironwood Hospital and Clinics Inc165 clinicians in the group
- Divine Savior Healthcare Inc141 clinicians in the group
- Aspirus Medford Hospital and Clinics Inc119 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 |
|---|---|
| Graduation year | 2009 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1538477906 |
| 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