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

Mary P Shierly, PA

Individual provider Physician Assistant · NPI 1831401983

Mary P Shierly, PA is a Physician Assistant in Castleton on Hudson, New York. Qualified in 2010, 16 years ago. Practices with Mary Imogene Bassett Hospital, a 779-clinician group, accepts Medicare assignment and offers telehealth. Licensed in Massachusetts and New York.

Years since qualifying
16
Licensed in
MA, NY
In the registry since
2010
Specialties on file
2
What do these letters mean?
PA — Physician Assistant
A licensed clinician who examines, diagnoses and treats under a physician's supervision.

See every abbreviation used in this directory →

Practice location Address checks out

35 Empire State Blvd
Castleton on Hudson, NY 12033-9777
Phone: (518) 477-2167
Show map & directions

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

Specialties & licences

Physician Assistant (primary) Taxonomy 363A00000X · Licence 014042 (NY)
Physician Assistant Taxonomy 363A00000X · Licence PA4011 (MA)

Record details

NPI number1831401983
Entity typeIndividual (Type 1)
GenderFemale
Credentials PA
Sole proprietorNo
NPI enumeratedJuly 6, 2010
Last updated in NPPESMarch 13, 2026
Certification dateMarch 13, 2026

Medicare enrollment

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

Medicare specialtyPHYSICIAN ASSISTANT
Medical schoolOTHER
Graduated 2010 (16 years in practice)
Group practice Mary Imogene Bassett Hospital — 779 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations5 on file with Medicare