Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Alexandra Hailey Donnelly, DO

Individual provider Student in an Organized Health Care Education/Training Program · NPI 1518543156

Alexandra Hailey Donnelly, DO is an Emergency Medicine in Stony Brook, New York. Qualified in 2021, 5 years ago. Practices with Siena Emergency Medical Services PC, a 15-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in New York.

Years since qualifying
5
Licensed in
NY
In the registry since
2021
Specialties on file
2
What do these letters mean?
DO — Doctor of Osteopathic Medicine
A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.

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Practice location Address checks out

101 Nicolls Road Hsc Level 4 050
Stony Brook, NY 11794
Phone: (631) 444-3880
Fax: (631) 444-3919
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 50 New York Ave # 25a, Smithtown, NY 11787-3448 — (631) 862-3000

Specialties & licences

Emergency Medicine Physician (primary) Taxonomy 207P00000X · Licence 328616 (NY)
Student in an Organized Health Care Education/Training Program Taxonomy 390200000X

Record details

NPI number1518543156
Entity typeIndividual (Type 1)
GenderFemale
Credentials DO
Sole proprietorNo
NPI enumeratedMarch 23, 2021
Last updated in NPPESSeptember 24, 2024
Certification dateSeptember 24, 2024
Mailing address101 Nicolls Road, Hsc Level 4, 050, Stony Brook, NY 11794

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyEMERGENCY MEDICINE
Medical schoolOTHER
Graduated 2021 (5 years in practice)
Group practice Siena Emergency Medical Services Pc — 15 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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