Quick answers
- Does Kathleen M. Leary accept Medicare assignment?
- Yes. Medicare's clinician data says Kathleen M. Leary accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Kathleen M. Leary see?
- In 2024, CMS data shows 475 Original Medicare patients and 570 services for Kathleen M. Leary. This counts Original Medicare only and measures volume, not quality.
- What is Kathleen M. Leary's NPI number?
- 1508091273. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Kathleen M. Leary, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 475 |
|---|---|
| Services billed to Medicare | 570 |
| Different services or procedures | 10 |
| Participating Medicare provider | Yes |
| Average age of these patients | 76 |
Most frequent services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)340 services
- Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)64 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)46 services
- New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more (99205)39 services
- Telephone medical discussion with physician, 21-30 minutes (99443)32 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High cholesterol75%
- Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)75%
- High blood pressure72%
- Arthritis49%
- Ischemic heart disease41%
- COPD37%
Practice locations
Addresses where Kathleen M. Leary is enrolled with Medicare (CMS data updated October 2, 2026).
- 1275 York AveNew York, NY 10065 (212) 639‑2000
- 650 Commack RdCommack, NY 11725 (631) 623‑4034
Group practices
Medicare enrollment lists Kathleen M. Leary as a member of these groups (CMS data updated October 2, 2026).
- MSKCC Surgery Group369 clinicians in the group
- MSKCC Regional Network136 clinicians in the group
Specialties
- Nurse Practitionerprimary
Other nurse practitioners in New York
Clinicians with the same Medicare primary specialty in New York, NY — not a recommendation.
Other clinicians in MSKCC Surgery Group
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | NP |
|---|---|
| Graduation year | 2008 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1508091273 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians