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

Dr. Alison Theresa O'Brien, MD

Individual provider Family Medicine Physician · NPI 1427042571

Dr. Alison Theresa O'Brien, MD is a Family Practice in Delhi, New York. Graduated from Perelman School of Med at the University of Pennsylvania in 2000, 26 years ago. Practices with Mary Imogene Bassett Hospital, a 779-clinician group, works from 2 locations, accepts Medicare assignment and offers telehealth. Licensed in New York.

Years since qualifying
26
Trained at
Perelman School of Med at the University of Pennsylvania
Licensed in
NY
In the registry since
2005
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

460 Andes Rd
Delhi, NY 13753-7443
Phone: (607) 746-0550
Fax: (607) 746-0568
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 317 Climax St, Pittsburgh, PA 15210-1347 — (412) 431-3520

Specialties & licences

Family Medicine Physician (primary) Taxonomy 207Q00000X · Licence 293347 (NY)

Record details

NPI number1427042571
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedSeptember 6, 2005
Last updated in NPPESMay 22, 2020
Certification dateMay 22, 2020

Medicare enrollment

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

Medicare specialtyFAMILY PRACTICE
Medical schoolPERELMAN SCHOOL OF MED AT THE UNIVERSITY OF PENNSYLVANIA
Graduated 2000 (26 years in practice)
Group practice Mary Imogene Bassett Hospital — 779 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations2 on file with Medicare

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