Diana Leon, M.D.
Obstetrics & Gynecology Physician · Setauket, NY
Diana Leon, M.D. is an obstetrics & gynecology physician with a practice address in Setauket, New York, and NPI 1649538554, issued on Apr 27, 2012. Check the license (New York 262109, as entered in NPPES) on the NYS Education Department, Office of the Professions; the Medicare figures below come from public CMS files.
- Name
- Diana Leon
- Credential
- M.D.
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License number
- 262109 NY
Self-reported in NPPES; status is on the state search - Practice location
- 100 S Jersey Ave Unit 16, Setauket, NY 11733
- Phone
- (631) 689-6400
- Enumerated
- Apr 27, 2012
- Record last updated
- Dec 3, 2019 (not updated in 7 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20130820000642); accepts Medicare assignment
- Medical or professional school
- Icahn School Of Medicine At Mount Sinai, 2008
- Entity
- Type 1 · individual
8 nearest obstetrics & gynecology physician records → All 3,174 in New York → Look up another NPI →
Also registered at 100 S Jersey Ave Unit 16
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Loren Lyons, WHNP-BCWomen's Health Nurse Practitioner1053641928
Verify Diana Leon 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 262109Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
76% more Medicare Part D claims than the average obstetrics & gynecology physician in 2024
291 Medicare Part D claims for 94 beneficiaries, against an average of 165 among the 28,733 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims.
Most prescribed
- Estradiol72 claims
- Nystatin30 claims
- Valacyclovir16 claims
- Yuvafem15 claims
- Junel Fe12 claims
- Clobetasol Propionate11 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): 81.1 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).
Industry payments in 2024: $18.42
1 payment: food and beverage; the largest payer was Evofem Biosciences, Inc. The 21,429 providers of this specialty with any payment received $1,030.61 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 one group practice
- Square Care Medical Group LLPEast Setauket, NY
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Diana Leon among 3,174 obstetrics & gynecology physician records in New York
Diana Leon, M.D. is one of 3,174 obstetrics & gynecology physician records with a practice address in New York. 76% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2012, is newer than 73% of them.
- NPI issued2012 · 73% of these records are older, 24% newer
- In a Medicare fileYes · 76% of these records are
- In the CMS Doctors and Clinicians fileYes · 59% of these records are
- Graduated2008 · median 2002 among the 1,870 with a school on file
- Record last updated2019 · 63% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207V00000X and a New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
7 obstetrics & gynecology physician records list a practice address in Setauket
They are 7 of the 253 NPPES records with a practice address in Setauket, and 3,174 obstetrics & gynecology physician records in New York.
All 3,174 in New York → Every provider in Setauket → Obstetrics & Gynecology Physician nationwide →
The 8 obstetrics & gynecology physician records with the nearest ZIP codes
- Christine Conway, M.D.East Setauket, NY 117331689601445
- Deborah Davenport, M.D.East Setauket, NY 117331679659346
- Susan Fish, N.P.Setauket, NY 117331649480047
- Elizabeth Garduno, M.D.East Setauket, NY 117331306017173
- Todd Griffin, M.D.East Setauket, NY 117331013943919
- Megan Lochner, M.D.Setauket, NY 117331235337478
- Robert O'Keefe, M.D.Setauket, NY 117331710108527
- Jeffrey Porte, M.D.Setauket, NY 117331659591808
Common questions
What is Diana Leon, M.D.'s NPI number?
Diana Leon, M.D.'s National Provider Identifier (NPI) is 1649538554, issued on Apr 27, 2012. An NPI identifies a provider in billing; it is not a license.
Where is Diana Leon, M.D. located?
The NPPES record lists a practice address at 100 S Jersey Ave Unit 16, Setauket, NY, 11733. Phone: (631) 689-6400. Providers update this record themselves, so call before visiting.
How can I verify Diana Leon, M.D.'s license?
NPPES lists New York license number 262109, 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 Diana Leon, M.D. prescribe under Medicare Part D?
In 2024, Diana Leon, M.D. had 291 Medicare Part D claims for 94 beneficiaries; the average among obstetrics & gynecology physician prescribers was 165. Part D covers Medicare prescriptions only.
What is Diana Leon, M.D.'s MIPS final score?
The 2023 MIPS final score is 81.1 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.