Stephen Thomas Onesti, M.D.
Neurological Surgery Physician · Rockville Centre, NY
Stephen Thomas Onesti, M.D. is a neurological surgery physician with a practice address in Rockville Centre, New York, and NPI 1114912458, issued on Sep 13, 2005. Check the license (New York 172055-1, as entered in NPPES) on the NYS Education Department, Office of the Professions; the Medicare figures below come from public CMS files.
- Name
- Stephen Thomas Onesti
- Credential
- M.D.
- Primary taxonomy
- Neurological Surgery Physician 207T00000X
- License number
- 172055-1 NY
Self-reported in NPPES; status is on the state search - Practice location
- 100 Merrick RD, Rockville Centre, NY 11570
- Phone
- (516) 632-7050
- Enumerated
- Sep 13, 2005
- Record last updated
- Oct 2, 2012 (not updated in 14 years: call before relying on the address or phone)
- Fax
- (516) 632-7074
- Medicaid IDs
- 01500807 NY
3118681 NY - Medicare enrollment
- Enrolled (PECOS I20100929001453); accepts Medicare assignment
- Medical or professional school
- Harvard Medical School, 1986
- Entity
- Type 1 · individual
Also registered at 100 Merrick RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Michael Brisman, M.D.Specialist1255355475
- Jeffrey Brown, M.D.Specialist1558384297
- Vladimir Dadashev, MDNeurological Surgery Physician1366626277
- Nicole Ferrantelli, PASurgical Physician Assistant1912158809
- Bari Lawner, LCSWClinical Social Worker1811539364
- Robert Mascarelli, PHYSICIAN ASSISTANTSurgical Physician Assistant1932145687
Verify Stephen Thomas Onesti 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 172055-1Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
59% fewer Medicare Part D claims than the average neurological surgery physician in 2024
70 Medicare Part D claims for 28 beneficiaries, against an average of 172 among the 4,378 providers of this specialty who prescribed in Part D. 23 claims were for opioids.
Most prescribed
- Gabapentin14 claims
- Oxycodone Hcl11 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: $117.66
4 payments; by number, the most common kind was food and beverage; the largest payer was Medtronic, Inc. The 5,377 providers of this specialty with any payment received $14,925.58 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
- Neurological Surgery Practice OF Long Island PLLCRockville Centre, NY
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Neurological Surgery Physician providers in New York
There are 529 neurological surgery physician records in New York.
Other neurological surgery physician records in New York
- Ira Abbott, MDBronx, NY1356445779
- Assem Abdel Latif, M.D.New York, NY1215345525
- John Abrahams, MDWhite Plains, NY1720049596
- Jose Acefe, M.D.Jamaica, NY1447596473
- Steven Addo-Yobo, MD, PHDNew York, NY1548553605
- Mary Ann Adelfio, M.DBronxville, NY1275566903
- Dana Adkins, M.D.Valhalla, NY1154354785
- Ariel Agur, MDNew York, NY1063381960
- Zahraa Al-Sharshahi, MDNew York, NY1881398386
- Amr Albakry, MDAlbany, NY1821542390
Common questions
What is Stephen Thomas Onesti, M.D.'s NPI number?
Stephen Thomas Onesti, M.D.'s National Provider Identifier (NPI) is 1114912458, issued on Sep 13, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Stephen Thomas Onesti, M.D. located?
The NPPES record lists a practice address at 100 Merrick RD, Rockville Centre, NY, 11570. Phone: (516) 632-7050. Providers update this record themselves, so call before visiting.
How can I verify Stephen Thomas Onesti, M.D.'s license?
NPPES lists New York license number 172055-1, 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 Stephen Thomas Onesti, M.D. prescribe under Medicare Part D?
In 2024, Stephen Thomas Onesti, M.D. had 70 Medicare Part D claims for 28 beneficiaries; the average among neurological surgery physician prescribers was 172. 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.