John E. Leavens, M.D.
Emergency Medicine Physician · Stony Brook, NY
John E. Leavens, M.D. is an emergency medicine physician with a practice address in Stony Brook, New York, and NPI 1730117367, issued on Jun 30, 2006. Check the license (New York 227526, as entered in NPPES) on the NYS Education Department, Office of the Professions; the Medicare figures below come from public CMS files.
- Name
- John E. Leavens
- Credential
- M.D.
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- 227526 NY
Self-reported in NPPES; status is on the state search - Practice location
- University Hospital, L4, Stony Brook, NY 11794
- Phone
- (631) 444-2499
- Enumerated
- Jun 30, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Medicaid ID
- 02647634 NY
- Medicare enrollment
- Enrolled (PECOS I20050616001250); accepts Medicare assignment
- Medical or professional school
- State University Of New York At Stony Brook, School Of Medicine, 2001
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 5,025 in New York → Look up another NPI →
Also registered at University Hospital, L4
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Christopher Carleo, M.D.Emergency Medicine Physician1023044823
- Stuart Chale, M.D.Emergency Medicine Physician1861428765
- David Cohen, M.D.Emergency Medicine Physician1902835333
- David Cooling, M.D.Emergency Medicine Physician1912934324
- Richard Dickinson, M.D.Emergency Medicine Physician1548298896
- Paul Fisher, M.D.Diagnostic Radiology Physician1821034547
Verify John E. Leavens 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 227526Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
51% fewer Medicare Part D claims than the average emergency medicine physician in 2024
110 Medicare Part D claims for 83 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. Brand-name drugs were 17% of 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: $20.00
1 payment: education; the largest payer was Csl Behring. The 12,335 providers of this specialty with any payment received $953.79 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 2 group practices
- Cep America LLCHartford, CT
- Stony Brook Family And Preventive Medicine, University Faculty PracticStony Brook, NY
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
John E. Leavens among 5,025 emergency medicine physician records in New York
John E. Leavens, M.D. is one of 5,025 emergency medicine physician records with a practice address in New York. 86% 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 3% of them.
- NPI issued2006 · 3% of these records are older, 72% newer
- In a Medicare fileYes · 86% of these records are
- In the CMS Doctors and Clinicians fileYes · 64% of these records are
- Graduated2001 · median 2013 among the 3,232 with a school on file
- Record last updated2007 · 55% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207P00000X and a New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
116 emergency medicine physician records list a practice address in Stony Brook
They are 116 of the 3,053 NPPES records with a practice address in Stony Brook, and 5,025 emergency medicine physician records in New York.
All 5,025 in New York → Every provider in Stony Brook → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Abida Butler, M.D.Stony Brook, NY 117941982683173
- Christopher Carleo, M.D.Stony Brook, NY 117941023044823
- Stuart Chale, M.D.Stony Brook, NY 117941861428765
- Michael Imperato, M.D.Stony Brook, NY 117941194791665
- Lester Kallus, M.D.Stony Brook, NY 117941154357887
- Melina Khwaja, M.D.Stony Brook, NY 117941164467544
- David Lawrence, DOStony Brook, NY 117941144273228
- Andrea Libutti, M.D.Stony Brook, NY 117941053349241
Common questions
What is John E. Leavens, M.D.'s NPI number?
John E. Leavens, M.D.'s National Provider Identifier (NPI) is 1730117367, issued on Jun 30, 2006. An NPI identifies a provider in billing; it is not a license.
Where is John E. Leavens, M.D. located?
The NPPES record lists a practice address at University Hospital, L4, Stony Brook, NY, 11794. Phone: (631) 444-2499. Providers update this record themselves, so call before visiting.
How can I verify John E. Leavens, M.D.'s license?
NPPES lists New York license number 227526, 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 John E. Leavens, M.D. prescribe under Medicare Part D?
In 2024, John E. Leavens, M.D. had 110 Medicare Part D claims for 83 beneficiaries; the average among emergency medicine physician prescribers was 226. 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.