John Lancelot Leonardo, M.D.
Anesthesiology Physician · Niagara Falls, NY
John Lancelot Leonardo, M.D. is an anesthesiology physician with a practice address in Niagara Falls, New York, and NPI 1710999511, issued on Aug 12, 2006. Check the license (New York 239613-1, as entered in NPPES) on the NYS Education Department, Office of the Professions; the Medicare figures below come from public CMS files.
- Name
- John Lancelot Leonardo
- Credential
- M.D.
- Primary taxonomy
- Anesthesiology Physician 207L00000X
- License numbers
- 239613-1 NY
25MA08096800 NJ
Self-reported in NPPES; status is on the state search - Practice location
- 1711 Cudaback Avenue, Niagara Falls, NY 14303
- Phone
- (646) 675-7622
- Enumerated
- Aug 12, 2006
- Record last updated
- Mar 17, 2018 (not updated in 8 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest anesthesiology physician records → All 5,062 in New York → Look up another NPI →
Verify John Lancelot Leonardo 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 239613-1Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Industry payments in 2024: $39.50
2 payments; by number, the most common kind was food and beverage; the largest payer was Servier Pharmaceuticals LLC. The 17,774 providers of this specialty with any payment received $669.59 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.
John Lancelot Leonardo among 5,062 anesthesiology physician records in New York
John Lancelot Leonardo, M.D. is one of 5,062 anesthesiology physician records with a practice address in New York. 77% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 16% of them.
- NPI issued2006 · 16% of these records are older, 52% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileNo · 71% of these records are
- Record last updated2018 · 56% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207L00000X and a New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Anesthesiology Physician providers in New York
There are 5,062 anesthesiology physician records in New York.
All 5,062 in New York → Every provider in Niagara Falls → Anesthesiology Physician nationwide →
The 8 anesthesiology physician records with the nearest ZIP codes
- John Cilnyk, M.D.Niagara Falls, NY 143011003109000
- Jillian Gugino, M.D.Niagara Falls, NY 143011003259052
- Ferenc Gyulai, MDNiagara Falls, NY 143011053389783
- Saima Kamal, M.D., MBBSNiagara Falls, NY 143011962716712
- Sujeivan Mahendram, MDNiagara Falls, NY 143011417573544
- Nik Ng, MDNiagara Falls, NY 143011164491171
- Ramesh Kumar Swamiappan, MBBS MDNiagara Falls, NY 143011770915308
- Meshel Yany, MDNiagara Falls, NY 143011225262819
Common questions
What is John Lancelot Leonardo, M.D.'s NPI number?
John Lancelot Leonardo, M.D.'s National Provider Identifier (NPI) is 1710999511, issued on Aug 12, 2006. An NPI identifies a provider in billing; it is not a license.
Where is John Lancelot Leonardo, M.D. located?
The NPPES record lists a practice address at 1711 Cudaback Avenue, Niagara Falls, NY, 14303. Phone: (646) 675-7622. Providers update this record themselves, so call before visiting.
How can I verify John Lancelot Leonardo, M.D.'s license?
NPPES lists New York license number 239613-1, 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.
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.