Quick answers
- Does Dorothy O Donnell accept Medicare assignment?
- Yes. Medicare's clinician data says Dorothy O Donnell 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 Dorothy O Donnell see?
- In 2024, CMS data shows 46 Original Medicare patients and 48 services for Dorothy O Donnell. This counts Original Medicare only and measures volume, not quality.
- What is Dorothy O Donnell's NPI number?
- 1215202619. 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 Dorothy O Donnell, 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 | 46 |
|---|---|
| Services billed to Medicare | 48 |
| Different services or procedures | 9 |
| Participating Medicare provider | Yes |
| Average age of these patients | 76 |
Most frequent services
- Critical care, first 30-74 minutes (99291)18 services
- Transitional care management services for problem of high complexity (99496)11 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 pressure75%
- High cholesterol72%
- Diabetes65%
- Arthritis65%
- Heart failure65%
- Ischemic heart disease63%
Practice locations
Addresses where Dorothy O Donnell is enrolled with Medicare (CMS data updated October 2, 2026).
- 888 Old Country RdPlainview, NY 11803 (516) 719‑3000
Group practices
Medicare enrollment lists Dorothy O Donnell as a member of this group (CMS data updated October 2, 2026).
- North Shore-Lij Medical PC6,440 clinicians in the group
Specialties
Find other Critical Care (Intensivists) doctors in New York →
Other critical care doctors in New York
Clinicians with the same Medicare primary specialty in New York — not a recommendation.
Other clinicians in North Shore-Lij Medical PC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Icahn School Of Medicine At Mount Sinai |
| Graduation year | 1990 (36 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1215202619 |
| 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