Leonidas G. Vassilaros, M.D.
Nephrology Physician · Youngstown, OH
Leonidas G. Vassilaros, M.D. is a nephrology physician with a practice address in Youngstown, Ohio, and NPI 1104897941, issued on Jan 30, 2006. Check the license (Ohio 35052890V, as entered in NPPES) on the State Medical Board of Ohio; the Medicare figures below come from public CMS files.
- Name
- Leonidas G. Vassilaros
- Credential
- M.D.
- Primary taxonomy
- Nephrology Physician 207RN0300X
- License numbers
- 35052890V OH
MD039853L PA
Self-reported in NPPES; status is on the state search - Practice location
- 1340 Belmont Ave, Youngstown, OH 44504
- Phone
- (330) 746-1488
- Enumerated
- Jan 30, 2006
- Record last updated
- Apr 3, 2014 (not updated in 12 years: call before relying on the address or phone)
- Fax
- (330) 746-5611
- Medicaid IDs
- 0775079 OH
1230382 PA - Medicare enrollment
- Enrolled (PECOS I20120413000597); accepts Medicare assignment
- Entity
- Type 1 · individual
Also registered at 1340 Belmont Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Anup Bains, M.D.Nephrology Physician1780655589
- Augustine Biscardi, D.O.Nephrology Physician1417928201
- Nathaniel Doe, M.D.Nephrology Physician1275504094
- Michael Koprucki, MDNephrology Physician1902069115
- Jesse McClain, CNSAdult Health Clinical Nurse Specialist1396891792
- Hasit Pandya, MDNephrology Physician1912954389
Verify Leonidas G. Vassilaros in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersState Medical Board of Ohio
Search for license 35052890VCheck the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
68% fewer Medicare Part D claims than the average nephrology physician in 2024
465 Medicare Part D claims for 54 beneficiaries, against an average of 1,465 among the 10,986 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims.
Most prescribed
- Calcitriol39 claims
- Lisinopril39 claims
- Allopurinol26 claims
- Losartan Potassium22 claims
- Furosemide20 claims
- Potassium Chloride20 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: $371.66
17 payments; by number, the most common kind was food and beverage; the largest payer was Boehringer Ingelheim Pharmaceuticals, Inc. The 8,230 providers of this specialty with any payment received $3,091.37 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
- The Kidney Group IncNew Castle, PA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Nephrology Physician providers in Ohio
There are 499 nephrology physician records in Ohio.
Other nephrology physician records in Ohio
- Randa Abd Algayoum, MDCleveland, OH1003392473
- Tariq Abdulkarim, M.D.Columbus, OH1366766362
- Syed Abidi, M.D.Toledo, OH1831196195
- Omar Abu-Romeh, M.DLima, OH1184805681
- Firas Adeel, M.D.Cincinnati, OH1679927842
- Sudhir Adhikari, MDCincinnati, OH1972705960
- Percy Adonteng-Boateng, M.D.Cleveland, OH1972959419
- Akinfemi Afolabi, M.D.Oregon, OH1992782965
- Anil Agarwal, M.D.Columbus, OH1639115413
- Sonalika Agarwal, M.D.Toledo, OH1366889131
Common questions
What is Leonidas G. Vassilaros, M.D.'s NPI number?
Leonidas G. Vassilaros, M.D.'s National Provider Identifier (NPI) is 1104897941, issued on Jan 30, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Leonidas G. Vassilaros, M.D. located?
The NPPES record lists a practice address at 1340 Belmont Ave, Youngstown, OH, 44504. Phone: (330) 746-1488. Providers update this record themselves, so call before visiting.
How can I verify Leonidas G. Vassilaros, M.D.'s license?
NPPES lists Ohio license number 35052890V, as entered by the provider. Search the State Medical Board of Ohio at https://elicense.ohio.gov/oh_verifylicense. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Leonidas G. Vassilaros, M.D. prescribe under Medicare Part D?
In 2024, Leonidas G. Vassilaros, M.D. had 465 Medicare Part D claims for 54 beneficiaries; the average among nephrology physician prescribers was 1,465. 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.