Marielle Ferstenberg-Osypian, D.O.
Surgery Physician · Williamsville, NY
Marielle Ferstenberg-Osypian, D.O. is a surgery physician with a practice address in Williamsville, New York, and NPI 1922445220, issued on May 28, 2013. Check the license (New York 299626, as entered in NPPES) on the NYS Education Department, Office of the Professions; the Medicare figures below come from public CMS files.
- Name
- Marielle Ferstenberg-Osypian
- Credential
- D.O.
- Primary taxonomy
- Surgery Physician 208600000X
- License number
- 299626 NY
Self-reported in NPPES; status is on the state search - Practice location
- 55 Spindrift Dr, Williamsville, NY 14221
- Phone
- (716) 626-6300
- Enumerated
- May 28, 2013
- Record last updated
- Jan 14, 2020 (not updated in 6 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20190812000397); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest surgery physician records → All 2,053 in New York → Look up another NPI →
Also registered at 55 Spindrift Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Anna Chen, DODiagnostic Radiology Physician1023054897
- Raja Cheruvu, MDDiagnostic Radiology Physician1942247945
- Chelsey Ciambella, M.D.Surgery Physician1598113987
- Vashita Dhir, M.DDiagnostic Radiology Physician1932326808
- Jason Dunleavy, MDDiagnostic Radiology Physician1316084726
- Marie Elaine, M.D.Diagnostic Radiology Physician1811124555
Verify Marielle Ferstenberg-Osypian in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNYS Education Department, Office of the Professions
Search for license 299626Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
39% fewer Medicare Part D claims than the average surgery physician in 2024
90 Medicare Part D claims for 76 beneficiaries, against an average of 147 among the 20,115 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims. 66 claims were for opioids.
Most prescribed
- Oxycodone-Acetaminophen63 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $260.96
7 payments; by number, the most common kind was food and beverage; the largest payer was Merck Sharp & Dohme LLC. The 17,103 providers of this specialty with any payment received $3,513.80 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Windsong Health Medical Alliance PLLCWilliamsville, NY
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Marielle Ferstenberg-Osypian among 2,053 surgery physician records in New York
Marielle Ferstenberg-Osypian, D.O. is one of 2,053 surgery physician records with a practice address in New York. 74% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2013, is newer than 76% of them.
- NPI issued2013 · 76% of these records are older, 22% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileYes · 59% of these records are
- Graduated2019 · median 2002 among the 1,212 with a school on file
- Record last updated2020 · 63% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208600000X and a New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Surgery Physician providers in New York
There are 2,053 surgery physician records in New York.
All 2,053 in New York → Every provider in Williamsville → Surgery Physician nationwide →
The 8 surgery physician records with the nearest ZIP codes
- Mohamed Al Bashir, MDWilliamsville, NY 142211174515761
- George Blessios, MDWilliamsville, NY 142211669472080
- David Crooks, MDWilliamsville, NY 142211376615492
- Kenneth Eckhert, M.D.Williamsville, NY 142211972581965
- Lyndsay Gutierrez-Panchal, MDWilliamsville, NY 142211235360629
- Vivian Lindfield, M.D.Williamsville, NY 142211356320345
- Jessica MartinolichWilliamsville, NY 142211154740199
- Katherine O'Donnell, M.D.Williamsville, NY 142211912996133
Common questions
What is Marielle Ferstenberg-Osypian, D.O.'s NPI number?
Marielle Ferstenberg-Osypian, D.O.'s National Provider Identifier (NPI) is 1922445220, issued on May 28, 2013. An NPI identifies a provider in billing; it is not a license.
Where is Marielle Ferstenberg-Osypian, D.O. located?
The NPPES record lists a practice address at 55 Spindrift Dr, Williamsville, NY, 14221. Phone: (716) 626-6300. Providers update this record themselves, so call before visiting.
How can I verify Marielle Ferstenberg-Osypian, D.O.'s license?
NPPES lists New York license number 299626, as entered by the provider. Search the NYS Education Department, Office of the Professions at https://www.op.nysed.gov/services/verifications/online-verification-searches. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Marielle Ferstenberg-Osypian, D.O. prescribe under Medicare Part D?
In 2024, Marielle Ferstenberg-Osypian, D.O. had 90 Medicare Part D claims for 76 beneficiaries; the average among surgery physician prescribers was 147. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.