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

Mrs. Karen Janet Terwilliger, MS, APRN, AGPCNP-BC

Individual provider Gerontology Nurse Practitioner · NPI 1245616705

Mrs. Karen Janet Terwilliger, MS, APRN, AGPCNP-BC is a Gerontology Nurse Practitioner in Mystic, Connecticut. Works from 3 locations. Licensed in Connecticut.

Licensed in
CT
In the registry since
2015
Specialties on file
2
What do these letters mean?
MS — Master of Science
A graduate science degree.
APRN — Advanced Practice Registered Nurse
The umbrella licence covering nurse practitioners, midwives, anaesthetists and clinical nurse specialists.

See every abbreviation used in this directory →

Practice location Address checks out

3 Heron Rd
Mystic, CT 06355-3253
Phone: (401) 497-6799
Show map & directions

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

Additional practice locations (2)

  • 111 Salem Tpke, Norwich, CT 06360-7403 — (860) 425-8700
  • 112 Mansfield Ave, Willimantic, CT 06226-2045 — (860) 456-6965

Specialties & licences

Gerontology Nurse Practitioner (primary) Taxonomy 363LG0600X · Licence 6220 (CT)
Primary Care Nurse Practitioner Taxonomy 363LP2300X · Licence 6220 (CT)

Record details

NPI number1245616705
Entity typeIndividual (Type 1)
GenderFemale
Credentials MS , APRN , AGPCNP-BC
Sole proprietorNo
NPI enumeratedAugust 7, 2015
Last updated in NPPESJune 2, 2026
Certification dateJune 2, 2026

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