Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
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Mrs. Rachael Marie Kosar, PA-C

Individual provider Physician Assistant · NPI 1467941849

Mrs. Rachael Marie Kosar, PA-C is a Physician Assistant in Buffalo, New York. Qualified in 2017, 9 years ago. Practices with Roswell Park Cancer Institute, a 489-clinician group, works from 3 locations, accepts Medicare assignment and offers telehealth. Licensed in Florida, New York and Pennsylvania.

Years since qualifying
9
Licensed in
FL, NY, PA
In the registry since
2018
Specialties on file
3
What do these letters mean?
PA-C — Physician Assistant, Certified
A physician assistant who holds current national certification.

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Practice location Partly verified

Some contact details are missing from the federal record.

Elm And Carlton St
Buffalo, NY 14263-0001
Phone: (716) 845-2300
Fax: (716) 845-8812
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (2)

  • 2861 W 26th St, Erie, PA 16506-3064 — (814) 835-6695
  • 7200 Peach St, Erie, PA 16509-4754 — (814) 860-3301

Specialties & licences

Physician Assistant (primary) Taxonomy 363A00000X · Licence 024881 (NY)
Physician Assistant Taxonomy 363A00000X · Licence PA9111138 (FL)
Physician Assistant Taxonomy 363A00000X · Licence OA004906 (PA)

Record details

NPI number1467941849
Entity typeIndividual (Type 1)
GenderFemale
Credentials PA-C
Sole proprietorNo
NPI enumeratedMay 1, 2018
Last updated in NPPESJanuary 20, 2021
Certification dateJanuary 20, 2021

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyPHYSICIAN ASSISTANT
Medical schoolOTHER
Graduated 2017 (9 years in practice)
Group practice Roswell Park Cancer Institute — 489 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients44
Services billed 50 a service is one billed item, such as a visit, a test or a procedure
Average patient age73

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Affiliated with 1 hospital, which CMS identifies by certification number only.

Colleagues at Roswell Park Cancer Institute

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 489 clinicians in the practice; 12 are shown here.

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