Ronald Ira Lenefsky, MD
Infectious Disease Physician · West Islip, NY
Ronald Ira Lenefsky, MD is an infectious disease physician with a practice address in West Islip, New York, and NPI 1588663546, issued on Jul 20, 2005. Check the license (New York 191235, as entered in NPPES) on the NYS Education Department, Office of the Professions; the Medicare figures below come from public CMS files.
- Name
- Ronald Ira Lenefsky
- Credential
- MD
- Primary taxonomy
- Infectious Disease Physician 207RI0200X
- License number
- 191235 NY
Self-reported in NPPES; status is on the state search - Practice location
- 500 Montauk Hwy, West Islip, NY 11795
- Phone
- (631) 587-7733
- Enumerated
- Jul 20, 2005
- Record last updated
- Dec 30, 2024
- Fax
- (631) 587-7798
- Medicaid ID
- 01816540 NY
- Medicare enrollment
- Enrolled (PECOS I20070309000241); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest infectious disease physician records → All 970 in New York → Look up another NPI →
Also registered at 500 Montauk Hwy
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Lauren Cardenas, PAPhysician Assistant1417200460
- Debra Civitano, FNPFamily Nurse Practitioner1295419240
- Danielle Didonna, PA-CPhysician Assistant1487799102
- Wanda Dussmann, LCSWClinical Social Worker1629142831
- Mary Anne Geskie, PH.D.Clinical Psychologist1861485583
- Stephen Harris, MDPlastic Surgery Physician1962402677
Verify Ronald Ira Lenefsky 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 191235Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
6.4 times the Medicare Part D claims of the average infectious disease physician in 2024
4,406 Medicare Part D claims for 459 beneficiaries, against an average of 689 among the 7,388 providers of this specialty who prescribed in Part D. 26 claims were for opioids.
Most prescribed
- Atorvastatin Calcium298 claims
- Rosuvastatin Calcium231 claims
- Losartan Potassium201 claims
- Amlodipine Besylate185 claims
- Hydrochlorothiazide180 claims
- Levothyroxine Sodium148 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.
The MIPS final score for 2023 (Medicare payment program): 91.3 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $900.00
1 payment: consulting fee; the largest payer was Apellis Pharmaceuticals, Inc. The 3,895 providers of this specialty with any payment received $4,362.19 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
- North Shore-Lij Medical PCNew Hyde Park, NY
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ronald Ira Lenefsky among 970 infectious disease physician records in New York
Ronald Ira Lenefsky, MD is one of 970 infectious disease physician records with a practice address in New York. 78% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 93% newer
- In a Medicare fileYes · 78% of these records are
- In the CMS Doctors and Clinicians fileYes · 64% of these records are
- Graduated1991 · median 2002 among the 624 with a school on file
- Record last updated2024 · 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 207RI0200X and a New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Infectious Disease Physician providers in New York
There are 970 infectious disease physician records in New York.
All 970 in New York → Every provider in West Islip → Infectious Disease Physician nationwide →
The 8 infectious disease physician records with the nearest ZIP codes
- Susan Donelan, M.D.Stony Brook, NY 117941285659292
- Bettina Fries, MDStony Brook, NY 117941457440877
- Thomas HolowkaStony Brook, NY 117941801386289
- Amir Latifi-M-Tehrani, M.D.Stony Brook, NY 117941972791150
- Natalie Mackow, MDStony Brook, NY 117941437649811
- Bennadette Maramara, M.D.Stony Brook, NY 117941427306851
- Luis Marcos Raymundo, M.D.Stony Brook, NY 117941205161015
- Adina Musta, M.D.Stony Brook, NY 117941447453774
Common questions
What is Ronald Ira Lenefsky, MD's NPI number?
Ronald Ira Lenefsky, MD's National Provider Identifier (NPI) is 1588663546, issued on Jul 20, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Ronald Ira Lenefsky, MD located?
The NPPES record lists a practice address at 500 Montauk Hwy, West Islip, NY, 11795. Phone: (631) 587-7733. Providers update this record themselves, so call before visiting.
How can I verify Ronald Ira Lenefsky, MD's license?
NPPES lists New York license number 191235, 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 Ronald Ira Lenefsky, MD prescribe under Medicare Part D?
In 2024, Ronald Ira Lenefsky, MD had 4,406 Medicare Part D claims for 459 beneficiaries; the average among infectious disease physician prescribers was 689. Part D covers Medicare prescriptions only.
What is Ronald Ira Lenefsky, MD's MIPS final score?
The 2023 MIPS final score is 91.3 of 100. The average among 454,083 clinicians with a measured score was 83.5.
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.