Peter D. Leff, M.D.
Surgery Physician · Meriden, CT
Peter D. Leff, M.D. is a surgery physician with a practice address in Meriden, Connecticut, and NPI 1669426508, issued on May 22, 2006. Check the license (Connecticut 034825, as entered in NPPES) on the Connecticut Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Peter D. Leff
- Credential
- M.D.
- Primary taxonomy
- Surgery Physician 208600000X
- License number
- 034825 CT
Self-reported in NPPES; status is on the state search - Practice location
- 455 Lewis Ave, Meriden, CT 06451
- Phone
- (203) 634-0134
- Enumerated
- May 22, 2006
- Record last updated
- Apr 1, 2010 (not updated in 16 years: call before relying on the address or phone)
- Fax
- (203) 630-3961
- Medicaid ID
- 1348251 CT
- Medicare enrollment
- Enrolled (PECOS I20031231000332); accepts Medicare assignment
- Medical or professional school
- New York Medical College, 1989
- Entity
- Type 1 · individual
8 nearest surgery physician records → All 360 in Connecticut → Look up another NPI →
Also registered at 455 Lewis Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Aurangzeb Ali, M.D.Surgery Physician1063464261
- Julie Ali, APRN, CRNACertified Registered Nurse Anesthetist1376735407
- Susan Alsamarai, MDHematology & Oncology Physician1174734768
- Cristobal Alvarado, MDThoracic Surgery (Cardiothoracic Vascular Surgery) Physician1578530333
- Rafal Barczak, MDColon & Rectal Surgery Physician1639316177
- Aziz Benbrahim, MDSurgery Physician1205844677
Verify Peter D. Leff in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersConnecticut Medical Examining Board
Search for license 034825Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
77% more Medicare Part D claims than the average surgery physician in 2024
260 Medicare Part D claims for 124 beneficiaries, against an average of 147 among the 20,115 providers of this specialty who prescribed in Part D. Brand-name drugs were 5% of claims. 75 claims were for opioids.
Most prescribed
- Oxycodone-Acetaminophen55 claims
- Pentoxifylline34 claims
- Minocycline Hcl31 claims
- Gabapentin26 claims
- Erythromycin11 claims
- Neomycin Sulfate11 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 practice group's MIPS final score for 2023 (Medicare payment program): 84.5 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. 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, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Hartford Healthcare Medical Group Specialists PLLCMeriden, CT
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Peter D. Leff among 360 surgery physician records in Connecticut
Peter D. Leff, M.D. is one of 360 surgery physician records with a practice address in Connecticut. 73% 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 9% of them.
- NPI issued2006 · 9% of these records are older, 49% newer
- In a Medicare fileYes · 73% of these records are
- In the CMS Doctors and Clinicians fileYes · 61% of these records are
- Graduated1989 · median 2002 among the 219 with a school on file
- Record last updated2010 · 68% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208600000X and a Connecticut practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Surgery Physician providers in Connecticut
There are 360 surgery physician records in Connecticut.
All 360 in Connecticut → Every provider in Meriden → Surgery Physician nationwide →
The 8 surgery physician records with the nearest ZIP codes
- Marwan Al Aoudi, MBB.CHMeriden, CT 064511104322700
- Aurangzeb Ali, M.D.Meriden, CT 064511063464261
- Aziz Benbrahim, MDMeriden, CT 064511205844677
- Louis Meyer, MDMeriden, CT 064511073521423
- Elizabeth Riordan, M.D.Meriden, CT 064511528078995
- Nicholas Verdura, M.D.Meriden, CT 064511760645618
- Jonathan Aranow, MDMiddletown, CT 064571922176825
- Jonathan Blancaflor, MDMiddletown, CT 064571952479750
Common questions
What is Peter D. Leff, M.D.'s NPI number?
Peter D. Leff, M.D.'s National Provider Identifier (NPI) is 1669426508, issued on May 22, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Peter D. Leff, M.D. located?
The NPPES record lists a practice address at 455 Lewis Ave, Meriden, CT, 06451. Phone: (203) 634-0134. Providers update this record themselves, so call before visiting.
How can I verify Peter D. Leff, M.D.'s license?
NPPES lists Connecticut license number 034825, as entered by the provider. Search the Connecticut Medical Examining Board at https://www.elicense.ct.gov/Lookup/LicenseLookup.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Peter D. Leff, M.D. prescribe under Medicare Part D?
In 2024, Peter D. Leff, M.D. had 260 Medicare Part D claims for 124 beneficiaries; the average among surgery physician prescribers was 147. Part D covers Medicare prescriptions only.
What is Peter D. Leff, M.D.'s MIPS final score?
The 2023 MIPS final score is 84.5 of 100, reported for the practice group. 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.