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

Lindsay M Demsey, PA-C

Individual provider Dermatology Physician · NPI 1992079883

Lindsay M Demsey, PA-C is a Physician Assistant in Winchester, Massachusetts. Graduated from Northwestern University Feinberg Medical School in 2011, 15 years ago. Practices with Robert J Obrien Jr MD and Assoc PC, a 19-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Massachusetts.

Years since qualifying
15
Trained at
Northwestern University Feinberg Medical School
Licensed in
MA
In the registry since
2012
Specialties on file
2
What do these letters mean?
PA-C — Physician Assistant, Certified
A physician assistant who holds current national certification.

See every abbreviation used in this directory →

Practice location Address checks out

955 Main St
Winchester, MA 01890-1961
Phone: (781) 729-4878
Fax: (781) 729-5989
Show map & directions

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

Additional practice locations (1)

  • 990 Paradise Rd, Swampscott, MA 01907-1395 — (781) 595-0151

Specialties & licences

Physician Assistant (primary) Taxonomy 363A00000X · Licence PA4282 (MA)
Dermatology Physician Taxonomy 207N00000X · Licence PA4282 (MA)

Record details

NPI number1992079883
Entity typeIndividual (Type 1)
GenderFemale
Credentials PA-C
Sole proprietorNo
NPI enumeratedFebruary 24, 2012
Last updated in NPPESDecember 10, 2025
Certification dateDecember 10, 2025

Medicare enrollment

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

Medicare specialtyPHYSICIAN ASSISTANT
Medical schoolNORTHWESTERN UNIVERSITY FEINBERG MEDICAL SCHOOL
Graduated 2011 (15 years in practice)
Group practice Robert J Obrien Jr Md And Assoc Pc — 19 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations3 on file with Medicare

Other providers in Winchester