Quick answers
- Does Donald N. Cohen accept Medicare assignment?
- Yes. Medicare's clinician data says Donald N. Cohen 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 Donald N. Cohen see?
- In 2024, CMS data shows 398 Original Medicare patients and 1,852 services for Donald N. Cohen. This counts Original Medicare only and measures volume, not quality.
- What is Donald N. Cohen's NPI number?
- 1205876380. 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 Donald N. Cohen, 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 | 398 |
|---|---|
| Services billed to Medicare | 1,852 |
| Different services or procedures | 31 |
| Participating Medicare provider | Yes |
| Average age of these patients | 76 |
Most frequent services
- Insertion of needle into vein for collection of blood sample (36415)540 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)467 services
- Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)248 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)208 services
- Administration of influenza virus vaccine (G0008)71 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 blood pressure72%
- High cholesterol68%
- Arthritis35%
- Ischemic heart disease26%
- Diabetes20%
- Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)18%
Hospitals where Donald N. Cohen works
Medicare's Facility Affiliation Data lists Donald N. Cohen at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- Greenwich Hospital Association -Greenwich, CT · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 070018
- Northern Westchester HospitalMount Kisco, NY · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 330162
- Phelps HospitalSleepy Hollow, NY · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 330261
Practice locations
Addresses where Donald N. Cohen is enrolled with Medicare (CMS data updated October 2, 2026).
- 16 Orchard DrArmonk, NY 10504 (914) 273‑3404
Group practices
Medicare enrollment lists Donald N. Cohen as a member of this group (CMS data updated October 2, 2026).
- Westchester Health Medical PC88 clinicians in the group
Specialties
- Internal Medicineprimary
- General Practicealso
Other internal medicine doctors in New York
Clinicians with the same Medicare primary specialty in New York — not a recommendation.
Other clinicians in Westchester Health Medical PC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1977 (49 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1205876380 |
| 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
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- 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