Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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MS. Jessica O'Brien, PA

Individual provider Medical Physician Assistant · NPI 1710902457

MS. Jessica O'Brien, PA is a Physician Assistant in Greenwich, Connecticut. Qualified in 2000, 26 years ago. Practices with Greenwich Hospital, a 79-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in New York.

Years since qualifying
26
Licensed in
NY
In the registry since
2006
What do these letters mean?
PA — Physician Assistant
A licensed clinician who examines, diagnoses and treats under a physician's supervision.

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Practice location Address checks out

5 Perryridge Rd
Greenwich, CT 06830-4608
Phone: (203) 863-3637
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 160 N Midland Ave, Nyack, NY 10960-1912 — (203) 863-3638

Specialties & licences

Medical Physician Assistant (primary) Taxonomy 363AM0700X · Licence 008468 (NY)

Record details

NPI number1710902457
Entity typeIndividual (Type 1)
GenderFemale
Credentials PA
Sole proprietorNo
NPI enumeratedJuly 13, 2006
Last updated in NPPESApril 13, 2020
Certification dateApril 13, 2020

Medicare enrollment

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

Medicare specialtyPHYSICIAN ASSISTANT
Medical schoolOTHER
Graduated 2000 (26 years in practice)
Group practice Greenwich Hospital — 79 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Other providers in Greenwich