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Dr. Peter D. Leff, MD
NPI1669426508PAC ID0244139087
- Medicare services, 2024
- 488
- Medicare patients, 2026
- 183
- Part D claims, 2026
- 260
- Publications
- 1
- MIPS score, 2026
- 90
- Practice address
- 435 Lewis Avenue, Meriden, CT 06450
- Practice phone
- Call (203) 694-8200
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Leff's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Peter D. Leff is a general surgeon in Meriden, Connecticut
Dr. Leff practices at MidState Medical Center in Meriden, Connecticut, part of Hartford HealthCare.
Dr. Leff's NPI, 1669426508, was assigned on May 22, 2006. Dr. Leff graduated from New York Medical College in 1989. Dr. Leff holds Connecticut license 034825.
NPI and contact details
- NPI
- 1669426508NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0244139087
- NPI enumeration date
- May 22, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (203) 694-8200
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 63
- Medical school graduation
- 1989
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Peter D. Leff practices at MidState Medical Center in Meriden, Connecticut
Dr. Leff's primary practice is MidState Medical Center, at 435 Lewis Avenue, Meriden, CT 06450 in New Haven County. The practice phone is (203) 694-8200.
- MidState Medical Center435 Lewis Avenue, Meriden, CT 06450 · New Haven CountyPhone(203) 694-8200
Source: Dmand AI Affiliation Data
Dr. Peter D. Leff is affiliated with 9 sites of care and 5 medical groups
Dr. Leff's primary practice is MidState Medical Center in Meriden, Connecticut, part of Hartford HealthCare. Dr. Leff is also affiliated with Hartford Hospital. The medical group on file is Hartford HealthCare Medical Group Specialists. Dmand AI also links Dr. Leff to 1 more hospital, 5 group practices and clinics, 4 medical groups and 1 home health agency, each named with a free account.
Hartford HospitalHartford HealthCare Medical Group Specialists1 hospitalName with a free account5 group practices and clinicsNames with a free account4 medical groupsNames with a free account1 home health agencyName with a free account
See all 14 affiliations for Dr. LeffSources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Peter D. Leff's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Leff practices, 9 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| MidState Medical Center | Available with a free account |
| +8 more sites and 4 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
See the EHR and IT leaders at every hospital where Dr. Leff practices
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Dr. Peter D. Leff is one of 303 general surgeons in Connecticut
Surgery is Dr. Leff's primary specialty in the NPI Registry, under taxonomy code 208600000X. Dr. Leff is licensed in Connecticut.
Specialties and state licenses
- Surgery, ConnecticutPrimary
General surgeons near Dr. Leff
Counts of general surgeons with a Dmand AI profile, by place and practice. Each opens the list.
303general surgeons in Connecticut10general surgeons in Meriden8general surgeons at MidState Medical Center
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Peter D. Leff billed Medicare for 488 services in 2024
CMS data shows 488 Medicare services from Dr. Leff across 9 procedure codes in 2024, for 183 Medicare patients. Medicare paid $38,169 for them.
Medicare services, 2024488
Medicare patients183
Paid by Medicare$38,169
Procedure codes9
Dr. Leff's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 2782024: 20925%
- Surgery
- 2023: 2012024: 1915%
- Tests and treatments
- 2023: 1152024: 8823%
Where Dr. Leff's Medicare services took place, 2024
- In an office43188%
- In a facility5712%
Dr. Leff compared with the Connecticut median for general surgeons, 2024
- Dr. Leff
- Connecticut median
- Medicare services
- 488vs 1094.5 times
- Medicare patients
- 183vs 9593% above
- Part D claims
- 179vs 257.2 times
Medians across 295 general surgeons in Connecticut with Dmand AI profiles that report each measure.
Dr. Leff's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
Need commercial claims for Dr. Leff?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Leff and other general surgeons in Connecticut.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Peter D. Leff treated 183 Medicare patients in 2026, average age 76
CMS counts 183 Medicare patients who saw Dr. Leff in 2026. The largest group is 75 to 84, with 65 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 24% are also on Medicaid. Their average risk score is 2.36, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Leff's median patient age at 65, with 42% women.
Medicare patients, 2026183
Average age76
Average risk score2.36
Also on Medicaid24%
Dr. Leff's Medicare patients by age, 2026
Dr. Leff's Medicare patients by sex, 2026
- Women8748%
- Men9652%
Chronic conditions among Dr. Leff's Medicare patients, 2026
- High blood pressure75%
- High cholesterol75%
- Arthritis51%
- Chronic kidney disease42%
- Diabetes42%
- Anxiety40%
- Ischemic heart disease40%
- Heart failure34%
Share of Medicare patients with each condition. A patient can have several.
Dr. Leff's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 65
Patient panel by sex, all payers
- Women42%
- Men57%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2026 data
Dr. Peter D. Leff wrote 260 Medicare Part D claims in 2026
In 2026, Dr. Leff wrote 260 Medicare Part D claims for 124 patients. 95% of them were for generic drugs. CMS names the drug for 179 of them, across 7 drugs with 11 or more claims each, at $3,005 in total drug cost. In 2023, CMS named 215 claims across 7 drugs.
Part D claims, 2026260
Drugs named by CMS7
Total drug cost$3,005
Part D patients124
Dr. Leff's Part D claims by kind of drug, 2026
- Generic247 claims95%
- Brand-name13 claims5%
Dr. Leff's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Leff's Part D claims, 2026
- Opioids29%75 of 260 claims
- Antibiotics30%79 of 260 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 2152024: 17917%
Drugs named by CMS: 7 in 2024, 7 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2026 data
Dr. Peter D. Leff scored 90 out of 100 in Medicare's MIPS program for 2026
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 90 out of 100 for Dr. Leff for performance year 2026, reported as part of a group. Dr. Leff accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 391 procedures of removal of tissue by Dr. Leff, more than 96% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
Dr. Leff's MIPS scores, performance year 2026
- 90of 100Final score
- 83.4of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
- 76of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Where Dr. Leff ranks in Medicare procedure volume
- Removal of tissue
- 96th percentile391 procedures
- Hernia repair (minimally invasive)
- 94th percentile28 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Colonoscopy: 1 to 10 procedures (CMS shows small counts as a range)
Hernia repair - groin (open): 1 to 10 procedures (CMS shows small counts as a range)
Melanoma (skin cancer) excision: 1 to 10 procedures (CMS shows small counts as a range)
Pacemaker insertion or repair: 1 to 10 procedures (CMS shows small counts as a range)
Upper gastrointestinal (GI) endoscopy for acid reflux: 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); Clinician Public Reporting: Overall MIPS Performance (CMS), 2026 data; and Doctors and Clinicians Utilization Data (CMS)
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Dr. Peter D. Leff has 1 publication on record
Dmand AI links 1 paper to Dr. Leff in 2021. Dr. Leff's most frequent co-author is Dylan A. Levy, MD.
Papers1
Dr. Leff's most frequent co-authors
- Dylan A. Levy, MD1 shared paper
Recent publications by Dr. Leff
See who Dr. Leff researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Leff works with, so you can find a warm path to the right general surgeons.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Peter D. Leff received $10,492 in industry payments from 2016 to 2025
CMS Open Payments shows 36 general payments to Dr. Leff from 13 drug and device companies from 2016 to 2025. Education make up the largest share, 81% of the total. Intuitive Surgical, Inc. paid the most, $9,947.
General payments to Dr. Leff by program year, 2016 to 2025
General payments to Dr. Leff by kind, 2016 to 2025
$10.5Kin total
- Education$8,50081%
- Travel and lodging$1,21612%
- Food and beverage$7767%
Companies that paid Dr. Leff the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Peter D. Leff graduated from New York Medical College
Dr. Leff graduated from New York Medical College in 1989.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Peter D. Leff's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Peter D. Leff
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Peter D. Leff's NPI number?
Dr. Peter D. Leff's NPI number is 1669426508. It was assigned on May 22, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Peter D. Leff?
Dr. Peter D. Leff is a general surgeon in Meriden, Connecticut. The primary specialty in the NPI Registry is Surgery Physician (taxonomy code 208600000X).
Where does Dr. Peter D. Leff practice?
Dr. Leff practices at 435 Lewis Avenue, Meriden, CT 06450. Dr. Leff's primary practice is MidState Medical Center in Meriden, Connecticut, part of Hartford HealthCare. Dmand AI also links Dr. Leff to 1 hospital, 5 group practices and clinics, 4 medical groups and 1 home health agency, and a free account names each one.
What is Dr. Peter D. Leff's office phone number?
The practice phone on file for Dr. Leff is (203) 694-8200. Dmand AI also checks direct phone and mobile numbers, available with a free account.
What is Dr. Peter D. Leff's email address?
Dmand AI checks professional and personal email addresses for Dr. Leff through healthcare-specific waterfall enrichment. They are available with a free Dmand AI account.
What is Dr. Peter D. Leff's medical license number?
Dr. Leff holds Connecticut license 034825.
Which hospitals is Dr. Peter D. Leff affiliated with?
Dr. Leff practices at MidState Medical Center in Meriden, Connecticut. Dr. Leff is also affiliated with Hartford Hospital. Dmand AI links Dr. Leff to 1 more hospital, named with a free account.
What medical group is Dr. Peter D. Leff part of?
Dr. Leff is linked to Hartford HealthCare Medical Group Specialists. Dmand AI links Dr. Leff to 4 more medical groups, named with a free account.
Who does Dr. Peter D. Leff practice with?
Dmand AI links 1,801 HCPs to Dr. Leff's primary medical group, 65 of them general surgeons. A free account lists them, with verified contacts.
Does Dr. Peter D. Leff accept Medicare?
Yes. CMS data shows Dr. Leff billed Medicare for 488 services in 2024, and Dr. Leff accepts Medicare assignment.
Show 10 more questionsShow fewer questions
What is Dr. Peter D. Leff's MIPS score?
Dr. Leff's MIPS final score for performance year 2026 is 90 out of 100, reported as part of a group.
How many Medicare patients does Dr. Peter D. Leff see?
CMS counts 183 Medicare patients who saw Dr. Leff in 2026, with an average age of 76.
What services does Dr. Peter D. Leff bill to Medicare?
In 2024, Dr. Leff's most billed Medicare services were surgery: skin and soft tissue (11042), physical therapy and rehabilitation (97597) and office visit, established patient (99213).
Where did Dr. Peter D. Leff go to medical school?
Dr. Leff graduated from New York Medical College in 1989.
What drugs does Dr. Peter D. Leff prescribe most?
In 2024 Medicare Part D data, Dr. Leff's most prescribed drugs by claims were Oxycodone-Acetaminophen, Pentoxifylline and Minocycline HCl.
Has Dr. Peter D. Leff received payments from drug or device companies?
CMS Open Payments shows $10,492 in general payments to Dr. Leff from 13 companies from 2016 to 2025. The largest total came from Intuitive Surgical, Inc.
How long has Dr. Peter D. Leff been practicing?
Dr. Leff graduated from medical school in 1989, 37 years ago.
Does Dr. Peter D. Leff do research?
Dmand AI links 1 publication to Dr. Leff.
Who does Dr. Peter D. Leff publish with?
Dr. Leff's most frequent co-authors are Dylan A. Levy, MD (1 shared paper).
What EHR does Dr. Peter D. Leff's practice use?
Dmand AI tracks the EHR system at MidState Medical Center and at 8 more sites and 4 medical groups. The vendor and product are available with a free Dmand AI account.
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