Alexandra Donnelly, DO
NPI 1518543156 · Emergency Medicine Physician · Stony Brook, NY
Enrolled with Medicare as Practitioner - Emergency Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Alexandra Donnelly, DO is a Emergency Medicine Physician provider in Stony Brook, NY (NPI 1518543156).
Provider details
- NPI number
- 1518543156
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO
- Sex
- Female
- Sole proprietor
- No
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
5 yrs in NPPES registry
- Profile completeness38% of score
83% of core fields populated
- Practice footprint23% of score
2 documented practice locations
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Additional practice locations (1)
- 50 New York Ave # 25aSmithtown, NY 11787-3448Phone: (631) 862-3000
Registry dates
- Enumerated
- 2021-03-23
- Last updated
- 2024-09-24
- Certified
- 2024-09-24
Frequently asked questions
- What is Alexandra Donnelly's NPI number?
- Alexandra Donnelly's National Provider Identifier (NPI) is 1518543156, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Alexandra Donnelly's specialty?
- Alexandra Donnelly is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Alexandra Donnelly located?
- Alexandra Donnelly's practice location on file with NPPES is 101 Nicolls Road, Stony Brook, NY 11794.
- What is Alexandra Donnelly's phone number?
- The practice phone number listed in the NPPES registry for Alexandra Donnelly is (631) 444-3880.
- Does Alexandra Donnelly accept Medicare?
- Alexandra Donnelly is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Alexandra Donnelly's NPI active?
- Yes — Alexandra Donnelly's NPI (1518543156) is active in the NPPES registry as of the last update on 2024-09-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.