Quick answers
- Does Katherine Athanasiou accept Medicare assignment?
- Yes. Medicare's clinician data says Katherine Athanasiou 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 Katherine Athanasiou see?
- In 2024, CMS data shows 72 Original Medicare patients and 5,266 services for Katherine Athanasiou. This counts Original Medicare only and measures volume, not quality.
- What is Katherine Athanasiou's NPI number?
- 1265976120. 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 Katherine Athanasiou, 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 | 72 |
|---|---|
| Services billed to Medicare | 5,266 |
| Different services or procedures | 17 |
| Participating Medicare provider | Yes |
| Average age of these patients | 76 |
Most frequent services
- Aminolevulinic acid hcl for topical administration, 10% gel, 10 mg (J7345)5,002 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)34 services
- Application of light with debridement to destroy precancer skin growth (96574)26 services
- Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more (99212)20 services
- New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)13 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%
- High blood pressure67%
- Arthritis61%
- Ischemic heart disease25%
- Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)25%
- Anxiety24%
Practice locations
Addresses where Katherine Athanasiou is enrolled with Medicare (CMS data updated October 2, 2026).
- 3 Delaware Dr, Suite 202New Hyde Park, NY 11042 (516) 622‑6161
- 90 S Bedford RdMount Kisco, NY 10549 (914) 241‑1050
Group practices
Medicare enrollment lists Katherine Athanasiou as a member of this group (CMS data updated October 2, 2026).
- Optum Medical Care PC1,010 clinicians in the group
Specialties
- Physician Assistantprimary
Other physician assistants in New Hyde Park
Clinicians with the same Medicare primary specialty in New Hyde Park, NY — not a recommendation.
Other clinicians in Optum Medical Care PC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Graduation year | 2016 |
|---|---|
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1265976120 |
| 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