Mrs Karen Janet Terwilliger, MS, APRN, AGPCNP-BC - Medicare Nurse Practitioner in Mystic, CT

Mrs Karen Janet Terwilliger, MS, APRN, AGPCNP-BC is a medicare enrolled "Nurse Practitioner - Gerontology" in Mystic, Connecticut. She graduated from nursing school in 2015 and has 9 years of diverse experience with area of expertise as Nurse Practitioner. She is a member of the group practice Mystic Geriatrics Llc and her current practice location is 3 Heron Rd, Mystic, Connecticut. You can reach out to her office (for appointments etc.) via phone at (401) 497-6799.

Mrs Karen Janet Terwilliger is licensed to practice in Connecticut (license number 6220) and she also participates in the medicare program. She accepts medicare assignments (which means she accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance) and her NPI Number is 1245616705.

Contact Information

Mrs Karen Janet Terwilliger, MS, APRN, AGPCNP-BC
3 Heron Rd,
Mystic, CT 06355-3253
(401) 497-6799
Not Available

Map and Direction




Provider's Profile

Full NameMrs Karen Janet Terwilliger
GenderFemale
SpecialityNurse Practitioner
Experience9 Years
Location3 Heron Rd, Mystic, Connecticut
Accepts Medicare AssignmentsYes. She accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • Mrs Karen Janet Terwilliger graduated from nursing school in 2015
  NPI Data:
  • NPI Number: 1245616705
  • Provider Enumeration Date: 08/07/2015
  • Last Update Date: 08/07/2015
  Medicare PECOS Information:
  • PECOS PAC ID: 0446569719
  • Enrollment ID: I20151028000314

Medical Identifiers

Medical identifiers for Mrs Karen Janet Terwilliger such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1245616705NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
363LG0600XNurse Practitioner - Gerontology 6220 (Connecticut)Primary
363LP2300XNurse Practitioner - Primary Care 6220 (Connecticut)Secondary

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Mystic Geriatrics Llc05475788412

Medicare Reassignments

Some practitioners may not bill the customers directly but medicare billing happens through clinics / group practice / hospitals where the provider works. Medicare reassignment of benefits is a mechanism by which practitioners allow third parties to bill and receive payment for medicare services performed by them. Mrs Karen Janet Terwilliger allows following entities to bill medicare on her behalf.
Entity NameMystic Geriatrics Llc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1336167238
PECOS PAC ID: 0547578841
Enrollment ID: O20151007000652
Entity NameIntegrated Wound Care Connecticut, Pllc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1649778762
PECOS PAC ID: 0042572893
Enrollment ID: O20180315000678

Medicare Part D Prescriber Enrollment

Any physician or other eligible professional who prescribes Part D drugs must either enroll in the Medicare program or opt out in order to prescribe drugs to their patients with Part D prescription drug benefit plans. Mrs Karen Janet Terwilliger is enrolled with medicare and thus, if eligible, can prescribe medicare part D drugs to patients with medicare part D benefits.

Mailing Address and Practice Location

Mailing AddressPractice Location Address
Mrs Karen Janet Terwilliger, MS, APRN, AGPCNP-BC
23 Old Voluntown Rd,
Griswold, CT 06351-8828

Ph: (401) 497-6799
Mrs Karen Janet Terwilliger, MS, APRN, AGPCNP-BC
3 Heron Rd,
Mystic, CT 06355-3253

Ph: (401) 497-6799

Reviews and Comments


Nurse Practitioner Nurses in Mystic, CT

Ms. Mary Ellen Pagnozzi, A.P.R.N.
Nurse Practitioner
Medicare: Not Enrolled in Medicare
Practice Location: 3 Heron Rd, Mystic, CT 06355
Phone: 860-536-6442    Fax: 860-536-6442
Shaniya Rosenkrantz, APRN
Nurse Practitioner
Medicare: Accepting Medicare Assignments
Practice Location: 100 Perkins Farm Dr, Mystic, CT 06355
Phone: 860-572-8911    
Cheryl A Walker, APRN
Nurse Practitioner
Medicare: Medicare Enrolled
Practice Location: 3 Heron Rd, Mystic, CT 06355
Phone: 860-536-6442    Fax: 860-536-6442
Miss Jennifer L. Hardy, APRN
Nurse Practitioner
Medicare: Accepting Medicare Assignments
Practice Location: 200 Sandy Hollow Rd, Mystic, CT 06355
Phone: 860-572-0402    Fax: 860-572-7758
Samantha Doucette, APRN
Nurse Practitioner
Medicare: Medicare Enrolled
Practice Location: 100 Perkins Farm Dr, Mystic, CT 06355
Phone: 860-545-5000    
Sandy Zhang, APRN
Nurse Practitioner
Medicare: Not Enrolled in Medicare
Practice Location: 23 Clara Dr, Mystic, CT 06355
Phone: 860-572-5782    Fax: 860-865-2385

Medicare Program: Medicare is a federal government program which provides health insurance to people who are 65 or older. This program also covers certain younger people with disabilities (who receive Social Security Disability Insurance - SSDI), and people with End-Stage Renal Disease (permanent kidney failure requiring dialysis or a transplant, sometimes called ESRD.

Medicare Assignment: Assignment means that your doctor, provider, or supplier agrees (or is required by law) to accept the Medicare-approved amount as full payment for covered services. Most doctors, providers, and suppliers accept assignment, but you should always check to make sure. Participating providers have signed an agreement to accept assignment for all Medicare-covered services.

NPI Number: The National Provider Identifier (NPI) is a unique identification number for covered health care providers. The NPI must be used in lieu of legacy provider identifiers in the HIPAA standards transactions. Covered health care providers and all health plans and health care clearinghouses must use the NPIs in the administrative and financial transactions adopted under HIPAA (Health Insurance Portability and Accountability Act).

Our Data: Information on www.medicarelist.com is built using data sources published by Centers for Medicare & Medicaid Services (CMS) under Freedom of Information Act (FOIA). The information disclosed on the NPI Registry are FOIA-disclosable and are required to be disclosed under the FOIA and the eFOIA amendments to the FOIA. There is no way to 'opt out' or 'suppress' the NPPES record data for health care providers with active NPIs.