Dr. John A. Leon, MD
- Medicare services, 2024
- 1,043
- Medicare patients, 2024
- 176
- Part D claims, 2024
- 198
- MIPS score, 2024
- 93
- Industry payments
- $38
- Practice address
- One Atwell Road, Cooperstown, NY 13326
- Practice phone
- Call (607) 547-3456
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Leon's professional email, personal email and mobile number
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Dr. John A. Leon is an ophthalmologist in Cooperstown, New York
Dr. Leon practices at Bassett Medical Center in Cooperstown, New York, part of Bassett Healthcare Network.
Dr. Leon's NPI, 1528022985, was assigned on April 13, 2006. Dr. Leon graduated from University of Southern California School of Medicine in 1984. Dr. Leon holds New York license 192770.
- NPI
- 1528022985NPI Registry (opens in a new tab)
- NPI enumeration date
- April 13, 2006
- NPI status
- Active
- Practice phone
- (607) 547-3456
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 68
- Medical school graduation
- 1984
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. John A. Leon practices at Bassett Medical Center in Cooperstown, New York
Dr. Leon's primary practice is Bassett Medical Center, at One Atwell Road, Cooperstown, NY 13326 in Otsego County. The practice phone is (607) 547-3456.
- Bassett Medical CenterOne Atwell Road, Cooperstown, NY 13326 · Otsego CountyPhone(607) 547-3456
Source: Dmand AI Affiliation Data
Dr. John A. Leon is affiliated with 1 medical group
Dr. Leon's primary practice is Bassett Medical Center in Cooperstown, New York, part of Bassett Healthcare Network. The medical group on file is Bassett Medical Center.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. John A. Leon's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Leon practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Bassett Medical Center | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across Bassett Healthcare Network and 6.2K+ hospitals, with verified contacts in the same login.
Dr. John A. Leon is one of 1,467 ophthalmologists in New York
Ophthalmology is Dr. Leon's primary specialty in the NPI Registry, under taxonomy code 207W00000X. Dr. Leon is licensed in New York.
Specialties and state licenses
- Ophthalmology, New YorkPrimary
Ophthalmologists near Dr. Leon
Counts of ophthalmologists 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. John A. Leon billed Medicare for 1,043 services in 2024
CMS data shows 1,043 Medicare services from Dr. Leon across 6 procedure codes in 2024, for 176 Medicare patients. Medicare paid $43,695 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Leon's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 6772024: 41539%
- Tests and treatments
- 2023: 6732024: 40740%
- Surgery
- 2023: 4012024: 22145%
Dr. Leon compared with the New York median for ophthalmologists, 2024
- Dr. Leon
- New York median
- Medicare services
- 1,043vs 1,25817% below
- Medicare patients
- 176vs 43660% below
- Part D claims
- 132vs 64780% below
Medians across 1,557 ophthalmologists in New York with Dmand AI profiles that report each measure.
Dr. Leon'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. Leon and other ophthalmologists in New York.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. John A. Leon treated 176 Medicare patients in 2024, average age 78
CMS counts 176 Medicare patients who saw Dr. Leon in 2024. The largest group is 75 to 84, with 72 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 15% are also on Medicaid. Their average risk score is 1.66, 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. Leon's median patient age at 78, with 44% women.
Dr. Leon's Medicare patients by age, 2024
Dr. Leon's Medicare patients by sex, 2024
- Women9152%
- Men8548%
Chronic conditions among Dr. Leon's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Diabetes47%
- Ischemic heart disease35%
- Arthritis33%
- Chronic kidney disease31%
- Atrial fibrillation30%
- Heart failure27%
Share of Medicare patients with each condition. A patient can have several.
Dr. Leon's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 78
Patient panel by sex, all payers
- Women44%
- Men55%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. John A. Leon wrote 198 Medicare Part D claims in 2024
In 2024, Dr. Leon wrote 198 Medicare Part D claims for 50 patients. 60% of them were for generic drugs. CMS names the drug for 132 of them, across 6 drugs with 11 or more claims each, at $18,889 in total drug cost. In 2023, CMS named 159 claims across 7 drugs.
Dr. Leon's Part D claims by kind of drug, 2024
- Generic119 claims60%
- Brand-name79 claims40%
Dr. Leon'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.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 1592024: 13217%
Drugs named by CMS: 6 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), 2024 data
Dr. John A. Leon scored 93 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 93 out of 100 for Dr. Leon for performance year 2024, reported through an alternative payment model (APM).
Dr. Leon's MIPS scores, performance year 2024
- 93of 100Final score
- 78of 100Quality
- 98of 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. John A. Leon received $38 in industry payments from 2020 to 2022
CMS Open Payments shows 2 general payments to Dr. Leon from 2 drug and device companies from 2020 to 2022. Gifts make up the largest share, 51% of the total. Carl Zeiss Meditec AG paid the most, $19.
General payments to Dr. Leon by program year, 2020 to 2022
General payments to Dr. Leon by kind, 2020 to 2022
- Gifts$1951%
- Food and beverage$1849%
Companies that paid Dr. Leon the most, 2020 to 2022
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. John A. Leon graduated from University of Southern California School of Medicine
Dr. Leon graduated from University of Southern California School of Medicine in 1984.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. John A. Leon'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 | Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab) |
| 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. John A. Leon
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. John A. Leon's NPI number?
Dr. John A. Leon's NPI number is 1528022985. It was assigned on April 13, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. John A. Leon?
Dr. John A. Leon is an ophthalmologist in Cooperstown, New York. The primary specialty in the NPI Registry is Ophthalmology Physician (taxonomy code 207W00000X).
Where does Dr. John A. Leon practice?
Dr. Leon practices at One Atwell Road, Cooperstown, NY 13326. Dr. Leon's primary practice is Bassett Medical Center in Cooperstown, New York, part of Bassett Healthcare Network.
What is Dr. John A. Leon's office phone number?
The practice phone on file for Dr. Leon is (607) 547-3456.
What is Dr. John A. Leon's medical license number?
Dr. Leon holds New York license 192770.
Which hospitals is Dr. John A. Leon affiliated with?
Dr. Leon practices at Bassett Medical Center in Cooperstown, New York.
What medical group is Dr. John A. Leon part of?
Dr. Leon is linked to Bassett Medical Center.
Does Dr. John A. Leon accept Medicare?
Yes. CMS data shows Dr. Leon billed Medicare for 1,043 services in 2024.
What is Dr. John A. Leon's MIPS score?
Dr. Leon's MIPS final score for performance year 2024 is 93 out of 100, reported through an alternative payment model (APM).
How many Medicare patients does Dr. John A. Leon see?
CMS counts 176 Medicare patients who saw Dr. Leon in 2024, with an average age of 78.
Show 5 more questionsShow fewer questions
What services does Dr. John A. Leon bill to Medicare?
In 2024, Dr. Leon's most billed Medicare services were eye exam or test (92134), surgery: eye (67028) and office visit, established patient (99213).
Where did Dr. John A. Leon go to medical school?
Dr. Leon graduated from University of Southern California School of Medicine in 1984.
What drugs does Dr. John A. Leon prescribe most?
In 2024 Medicare Part D data, Dr. Leon's most prescribed drugs by claims were Bromfenac Sodium, Prednisolone Acetate and Brimonidine Tartrate.
Has Dr. John A. Leon received payments from drug or device companies?
CMS Open Payments shows $38 in general payments to Dr. Leon from 2 companies from 2020 to 2022. The largest total came from Carl Zeiss Meditec AG.
How long has Dr. John A. Leon been practicing?
Dr. Leon graduated from medical school in 1984, 42 years ago.
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