Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Mariola B Poss, MD

Individual provider Surgery Physician · NPI 1669516423

Mariola B Poss, MD practises General Surgery in Williamsville, New York. Graduated from State University of New York at Buffalo School of Medicine in 2005, 21 years ago. Practices with Rpci Oncology, PC, a 60-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in New York and Texas.

Years since qualifying
21
Trained at
State University of New York at Buffalo School of Medicine
Licensed in
NY, TX
In the registry since
2007
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

199 Park Club Ln Ste 100
Williamsville, NY 14221-5269
Phone: (716) 332-6834
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 3041 Orchard Park Rd, Orchard Park, NY 14127-1238 — (716) 674-3104

Specialties & licences

Surgery Physician (primary) Taxonomy 208600000X · Licence 279073 (NY)
Surgery Physician Taxonomy 208600000X · Licence N6965 (TX)

Record details

NPI number1669516423
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedFebruary 16, 2007
Last updated in NPPESMarch 29, 2022
Certification dateMarch 29, 2022

Medicare enrollment

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

Medicare specialtyGENERAL SURGERY
Medical schoolSTATE UNIVERSITY OF NEW YORK AT BUFFALO SCHOOL OF MEDICINE
Graduated 2005 (21 years in practice)
Group practice Rpci Oncology, Pc — 60 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Procedures

From CMS Care Compare, which counts the procedures a clinician billed to Original Medicare and Medicare Advantage over a recent 12-month period. CMS reports a fixed list of common procedures, so this is not everything the clinician does. Counts of 10 or fewer are given as a range, because CMS withholds small numbers.

Mastectomy 40 times · 91st percentile
Skin biopsy 1–10 times

The percentile compares how often this clinician performed the procedure with other clinicians who performed it, as CMS calculates it. It measures volume, not outcomes or skill.

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 patients98
Services billed 196 a service is one billed item, such as a visit, a test or a procedure
Average patient age72

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 Rpci Oncology, PC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 60 clinicians in the practice; 12 are shown here.

Other providers in Williamsville