Quick answers
- Which hospitals does Mark Kwalbrun work at?
- Medicare's official clinician data lists Mark Kwalbrun at 5 hospitals: Auburn Community Hospital, Canton-Potsdam Hospital, Gouverneur Hospital, Lincoln Medical & Mental Health Center and SLHS Massena, Inc. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Mark Kwalbrun see patients?
- Medicare's clinician data lists 4 practice locations, including Bronx, NY, Brooklyn, NY and New Hartford, NY. Call before your visit to confirm the address.
- What is Mark Kwalbrun's specialty?
- Medicare lists Diagnostic Radiology as the primary specialty.
- Does Mark Kwalbrun accept Medicare assignment?
- Yes. Medicare's clinician data says Mark Kwalbrun 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 Mark Kwalbrun?
- (718) 579-6101, as listed in official Medicare / NPI Registry data.
- What is Mark Kwalbrun's NPI number?
- 1811997042. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Mark Kwalbrun works
Medicare's Facility Affiliation Data lists Mark Kwalbrun at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Auburn Community HospitalAuburn, NY · Acute Care Hospital · CCN 330235
- Canton-Potsdam HospitalPotsdam, NY · Acute Care Hospital · CCN 330197
- Gouverneur HospitalGouverneur, NY · Critical Access Hospital · CCN 331315
- Lincoln Medical & Mental Health CenterBronx, NY · Acute Care Hospital · CCN 330080
- SLHS Massena, IncMassena, NY · Critical Access Hospital · CCN 331322
Practice locations
Addresses where Mark Kwalbrun is enrolled with Medicare (CMS data updated 2026-10-02).
- 234 E 149 StBronx, NY 10451 (718) 579‑6101
- 2601 Ocean PkwyBrooklyn, NY 11235 (718) 616‑5356
- 4693 Commercial DrNew Hartford, NY 13413 (315) 507‑5144
- 50 Leroy StPotsdam, NY 13676 (315) 265‑3300
Group practices
Medicare enrollment lists Mark Kwalbrun as a member of these groups (CMS data updated 2026-10-02).
- Physician Affiliate Group of New York PC1,225 clinicians in the group
- St Lawrence Radiology Assoc PC24 clinicians in the group
Specialties
- Diagnostic Radiologyprimary
Other radiologists in Bronx
Clinicians with the same Medicare primary specialty in Bronx, NY — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | State University Of New York Downstate Medical Center |
| Graduation year | 1997 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1811997042 |
| 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