Quick answers
- Does Joshua Owczarczak accept Medicare assignment?
- Yes. Medicare's clinician data says Joshua Owczarczak 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 Joshua Owczarczak's NPI number?
- 1245818939. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Joshua Owczarczak works
Medicare's Facility Affiliation Data lists Joshua Owczarczak 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.
- Kaleida HealthBuffalo, NY · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 330005
Practice locations
Addresses where Joshua Owczarczak is enrolled with Medicare (CMS data updated October 2, 2026).
- 1001 Main St, Fl 4Buffalo, NY 14203 (716) 323‑0569
- 818 Ellicott StBuffalo, NY 14203 (716) 323‑2000
- 900 Hertel AveBuffalo, NY 14216 (716) 871‑1571
Group practices
Medicare enrollment lists Joshua Owczarczak as a member of these groups (CMS data updated October 2, 2026).
- Kaleida Health236 clinicians in the group
- Ub Family Medicine Inc38 clinicians in the group
Specialties
- Pediatric Medicineprimary
- Internal Medicinealso
Other pediatricians in Buffalo
Clinicians with the same Medicare primary specialty in Buffalo, NY — not a recommendation.
Other clinicians in Kaleida Health
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | State University Of New York At Buffalo School Of Medicine |
| Graduation year | 2021 (5 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1245818939 |
| 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