Quick answers
- Does Slawomir M. Kosinski accept Medicare assignment?
- Yes. Medicare's clinician data says Slawomir M. Kosinski accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- What is Slawomir M. Kosinski's NPI number?
- 1184661597. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Slawomir M. Kosinski works
Medicare's Facility Affiliation Data lists Slawomir M. Kosinski at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- St Joseph's University Medical Center IncPaterson, NJ · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: not listed by Medicare · CCN 310019
Practice locations
Addresses where Slawomir M. Kosinski is enrolled with Medicare (CMS data updated October 2, 2026).
- 703 Main StPaterson, NJ 07503 (973) 754‑6331
Group practices
Medicare enrollment lists Slawomir M. Kosinski as a member of this group (CMS data updated October 2, 2026).
- St Josephs Medical Group PC216 clinicians in the group
Specialties
- Allergy/Immunologyprimary
- Pediatric Medicinealso
Other allergist and immunologists in New Jersey
Clinicians with the same Medicare primary specialty in New Jersey — not a recommendation.
Other clinicians in St Josephs Medical Group PC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1972 (54 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1184661597 |
| 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 October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- 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