Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Marielle Ferstenberg-Osypian, DO

Individual provider Surgery Physician · NPI 1922445220

Marielle Ferstenberg-Osypian, DO is a Surgical Oncology in Williamsville, New York. Qualified in 2019, 7 years ago. Practices with Windsong Health Medical Alliance PLLC, a 4-clinician group and accepts Medicare assignment. Licensed in New York.

Years since qualifying
7
Licensed in
NY
In the registry since
2013
What do these letters mean?
DO — Doctor of Osteopathic Medicine
A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.

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Practice location Address checks out

55 Spindrift Dr
Williamsville, NY 14221-7800
Phone: (716) 626-6300
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Surgery Physician (primary) Taxonomy 208600000X · Licence 299626 (NY)

Record details

NPI number1922445220
Entity typeIndividual (Type 1)
GenderFemale
Credentials DO
Sole proprietorYes
NPI enumeratedMay 28, 2013
Last updated in NPPESJanuary 14, 2020
Certification dateJanuary 14, 2020

Medicare enrollment

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

Medicare specialtySURGICAL ONCOLOGY
Medical schoolOTHER
Graduated 2019 (7 years in practice)
Group practice Windsong Health Medical Alliance Pllc — 4 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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