Dr. Jonathan D. Leff, MD
- Medicare services, 2024
- 13
- Medicare patients, 2024
- 33
- MIPS score, 2024
- 100
- Hospital affiliations
- 1
- Industry payments
- $36,108
- Practice address
- 111 East 210th Street, Bronx, NY 10467
- Practice phone
- Call (718) 920-4321
- 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
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Dr. Jonathan D. Leff is an anesthesiologist in Bronx, New York
Dr. Leff practices at Montefiore Einstein Hospital-Moses Campus in Bronx, New York, part of Montefiore Einstein.
Dr. Leff's NPI, 1881779270, was assigned on October 26, 2006. Dr. Leff holds New York license 236386.
- NPI
- 1881779270NPI Registry (opens in a new tab)
- Medicare PAC ID
- 2062449077
- NPI enumeration date
- October 26, 2006
- NPI status
- Active
- Practice phone
- (718) 920-4321
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 53
- Medical school graduation
- 1999
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. Jonathan D. Leff practices at Montefiore Einstein Hospital-Moses Campus in Bronx, New York
Dr. Leff's primary practice is Montefiore Einstein Hospital-Moses Campus, at 111 East 210th Street, Bronx, NY 10467 in Bronx County. The practice phone is (718) 920-4321.
- Montefiore Einstein Hospital-Moses Campus111 East 210th Street, Bronx, NY 10467 · Bronx CountyPhone(718) 920-4321
Source: Dmand AI Affiliation Data
Dr. Jonathan D. Leff is affiliated with 3 sites of care and 1 medical group
Dr. Leff's primary practice is Montefiore Einstein Hospital-Moses Campus in Bronx, New York, part of Montefiore Einstein. The medical group on file is Montefiore Einstein Faculty Practice Group. Dmand AI also links Dr. Leff to 1 more group practice or clinic and 1 school health center, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Jonathan D. Leff's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Leff practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Montefiore Einstein Hospital-Moses Campus | Available with a free account |
| +2 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Jonathan D. Leff is one of 3,858 anesthesiologists in New York
Anesthesiology is Dr. Leff's primary specialty in the NPI Registry, under taxonomy code 207L00000X. Dr. Leff is licensed in New York.
Specialties and state licenses
- Anesthesiology, New YorkPrimary
Anesthesiologists near Dr. Leff
Counts of anesthesiologists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Jonathan D. Leff billed Medicare for 13 services in 2024
CMS data shows 13 Medicare services from Dr. Leff across 1 procedure code in 2024, for 33 Medicare patients. Medicare paid $546 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Leff's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Surgery
- 2023: 322024: 1359%
- Anesthesia
- 2023: 142024: 0100%
Dr. Leff compared with the New York median for anesthesiologists, 2024
- Dr. Leff
- New York median
- Medicare services
- 13vs 7683% below
- Medicare patients
- 33vs 13275% below
Medians across 3,723 anesthesiologists in New York 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.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Leff and other anesthesiologists in New York.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Jonathan D. Leff treated 33 Medicare patients in 2024, average age 72
CMS counts 33 Medicare patients who saw Dr. Leff in 2024. The largest group is 75 to 84, with 14 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 45% are also on Medicaid. Their average risk score is 3.00, 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 25% women.
Dr. Leff's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Leff's Medicare patients by sex, 2024
- Women1648%
- Men1752%
Chronic conditions among Dr. Leff's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Heart failure70%
- Ischemic heart disease70%
- Diabetes67%
- Atrial fibrillation55%
- Chronic kidney disease52%
- Arthritis42%
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
- Women25%
- Men71%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Jonathan D. Leff scored 100 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 100 out of 100 for Dr. Leff for performance year 2024, reported as part of a group.
Dr. Leff's MIPS scores, performance year 2024
- 100of 100Final score
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Source: Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Dr. Jonathan D. Leff received $36,108 in industry payments from 2016 to 2025
CMS Open Payments shows 69 general payments to Dr. Leff from 12 drug and device companies from 2016 to 2025. Consulting fees make up the largest share, 29% of the total. CAS Medical Systems Inc. paid the most, $20,615.
General payments to Dr. Leff by program year, 2016 to 2025
General payments to Dr. Leff by kind, 2016 to 2025
- Consulting fees$10,40029%
- Travel and lodging$10,27928%
- Honoraria$6,15017%
- Speaker and faculty fees$5,18514%
- Other$4,09511%
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
Sources for Dr. Jonathan 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) |
| MIPS scores, telehealth, assignment and procedure percentiles | Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| 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. Jonathan 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. Jonathan D. Leff's NPI number?
Dr. Jonathan D. Leff's NPI number is 1881779270. It was assigned on October 26, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Jonathan D. Leff?
Dr. Jonathan D. Leff is an anesthesiologist in Bronx, New York. The primary specialty in the NPI Registry is Anesthesiology Physician (taxonomy code 207L00000X).
Where does Dr. Jonathan D. Leff practice?
Dr. Leff practices at 111 East 210th Street, Bronx, NY 10467. Dr. Leff's primary practice is Montefiore Einstein Hospital-Moses Campus in Bronx, New York, part of Montefiore Einstein. Dmand AI also links Dr. Leff to 1 group practice or clinic and 1 school health center.
What is Dr. Jonathan D. Leff's office phone number?
The practice phone on file for Dr. Leff is (718) 920-4321.
What is Dr. Jonathan D. Leff's medical license number?
Dr. Leff holds New York license 236386.
Which hospitals is Dr. Jonathan D. Leff affiliated with?
Dr. Leff practices at Montefiore Einstein Hospital-Moses Campus in Bronx, New York.
What medical group is Dr. Jonathan D. Leff part of?
Dr. Leff is linked to Montefiore Einstein Faculty Practice Group.
Does Dr. Jonathan D. Leff accept Medicare?
Yes. CMS data shows Dr. Leff billed Medicare for 13 services in 2024.
What is Dr. Jonathan D. Leff's MIPS score?
Dr. Leff's MIPS final score for performance year 2024 is 100 out of 100, reported as part of a group.
How many Medicare patients does Dr. Jonathan D. Leff see?
CMS counts 33 Medicare patients who saw Dr. Leff in 2024, with an average age of 72.
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What services does Dr. Jonathan D. Leff bill to Medicare?
In 2024, Dr. Leff's most billed Medicare services were surgery: heart and blood vessels (36620).
Has Dr. Jonathan D. Leff received payments from drug or device companies?
CMS Open Payments shows $36,108 in general payments to Dr. Leff from 12 companies from 2016 to 2025. The largest total came from CAS Medical Systems Inc.
How long has Dr. Jonathan D. Leff been practicing?
Dr. Leff graduated from medical school in 1999, 27 years ago.
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