Provider Profile
Karen J. Terwilliger, MS, APRN, AGPCNP-BC
Unclaimed ProfileAbout Karen Terwilliger
Karen J. Terwilliger, MS, APRN, AGPCNP-BC is a nurse practitioner — gerontology practicing in Mystic, CT. Karen is also listed as specializing in nurse practitioner — primary care. Medicare claims data shows Karen provided 993 services to 327 patients. The services billed most often include subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, 20 minutes or more, subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, at least 10 minutes, and subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.
Specialty
Credentials & Licensing
License numbers are what the provider reported to NPPES when the NPI was issued or updated. NPPES does not verify licensure; confirm current standing with the state licensing board.
Medicare information
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
Contact Information
- (401) 497-6799
- Email not available
Practice Locations
3 HERON RD
Mystic, CT 06355
112 Mansfield Ave
Willimantic, CT 06226
111 Salem Tpke
Norwich, CT 06360
Conditions and Services Within This Provider's Scope
Within Nurse Practitioner - Gerontology generally. Availability varies by clinician, training and location — this profile has not been claimed, so nothing here is a personal claim by the provider.
Conditions
Back & Spine
- Sciatica
- Spinal stenosis
Bladder & Urinary
- Enlarged prostate
- Urinary incontinence in women
- UTI
Brain & Memory
- Agitation and Sundowning
- Delirium
- Dementia
- Memory loss
- Parkinson's disease
Brain & Nerves
- Dizziness and vertigo
- Shaky Hands and Tremors
- Stroke Aftercare
Breathing & Lungs
- Shortness of breath
Digestive & Gut
- Acid reflux
- Fecal incontinence
- Poor Appetite In Seniors
Digestive Health
- Constipation
- Swallowing difficulties
Endocrine & Hormones
- Underactive Thyroid
Endocrine & Metabolic
- Diabetes
General Health
- Elderly Frailty
General Senior Health
- Anemia of chronic disease
- Managing multiple medications
- Severe dehydration
- Short stature and growth concerns
- Unexplained Weight Loss
Heart & Circulation
- AFib
- Congestive heart failure
- High blood pressure
- High cholesterol
- Poor Circulation and Swollen Legs
Infections
- Seasonal Flu and Viruses
- Shingles
Joints & Bones
- Arthritis
- Gout
- Osteoporosis
Kidney & Urinary
- Chronic kidney disease
Lung & Respiratory
- Community-acquired pneumonia
- COPD
Mental Health
- Senior Depression
Mobility & Balance
- Frequent falls
- Orthostatic hypotension
Nerves & Sensation
- Foot Numbness and Tingling
Pain
- Chronic pain
Sensory
- Hearing loss
Skin
- Dry Itchy Skin in Elderly
- Unexplained Bruising
Skin & Wounds
- Non-Healing Wounds
- Thinning and Tearing Skin
Sleep
- Insomnia
- Sleep apnea
Procedures & services
Bladder & Urinary
- Incontinence Evaluation
Brain & Memory
- Cognitive and memory screening
Care Planning
- Advance Care Planning
- Caregiver Support and Counseling
- Comfort care transition
- Hospice Care Evaluation
Diagnostic Tests
- Heart Monitor Referral
General Health
- Pre-surgery medical clearance
General Senior Health
- Post-hospital transitional care
- Senior Nutrition Evaluation
Heart & Circulation
- Blood Pressure Check
Home & Facility Care
- Home Doctor Visit
- Senior Living Medical Care
In-Office Treatments
- Nebulizer Breathing Treatment
Lab & Monitoring
- Complete Blood Count
- Hemoglobin A1c Test
Lab Tests & Screening
- Cholesterol screening
- Comprehensive Metabolic Panel
- Thyroid Blood Test
- Urinalysis
Medication Management
- Tapering Off Psychiatric Medication
Mental Health
- Depression screening
Minor Procedures
- Bladder Catheter Placement and Care
- Earwax removal
Mobility & Safety
- Fall risk assessment
- Home Safety Evaluation
- Senior Driving Safety Evaluation
- Walker and Wheelchair Prescription
Pain Management
- Knee Joint Injections
Preventive Care
- Bone Density Scan Referral
- Chronic disease management
- Diabetic Foot Care
- Medicare annual wellness visit
Referrals & Care Coordination
- At-Home Sleep Study Order
- Hearing Test Referral
- Home Health Care Referral
- Occupational Therapy Referral
- Speech and Swallowing Therapy Referral
Referrals & Coordination
- Physical Therapy Referral
Specialized Care
- Nursing Home Admission Exam
Vaccines & Injections
- COVID-19 Booster
- Flu shot
- Routine Vaccines
- RSV vaccine
- Tetanus Booster Shot
- Vitamin B12 Injection
Vaccines & Prevention
- Pneumonia shot
Wound Care
- Bedsore and Wound Dressing
- Skin Tear Treatment
Procedures Most Often Billed to Medicare
993 services · 327 patients · 9 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Removal of skin and tissue, 20.0 sq cm or less | Procedure | 11042 |
62 | |
| Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, 20 minutes or more | Office visit | 99308 |
451 | More often than most peers in Nurse Practitioner — Gerontology |
| Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, at least 10 minutes | Office visit | 99307 |
191 | More often than most peers in Nurse Practitioner — Gerontology |
| Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes | Office visit | 99309 |
85 | |
| Residence visit for established patient with moderate level of medical decision making, per day, if using time, at least 40 minutes | Office visit | 99349 |
70 | As often as other peers in Nurse Practitioner — Gerontology |
| Residence visit for established patient with low level of medical decision making, per day, if using time, at least 30 minutes | Office visit | 99348 |
53 | As often as other peers in Nurse Practitioner — Gerontology |
| Initial nursing facility care with moderate level of medical decision making, per day, if using time, at least 35 minutes | Office visit | 99305 |
40 | As often as other peers in Nurse Practitioner — Gerontology |
| Initial nursing facility care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes | Office visit | 99304 |
29 | As often as other peers in Nurse Practitioner — Gerontology |
| Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit | Billing code | G0439 |
12 |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Other nurse practitioners at this location 1
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 3
Clinically related specialties at the same address — the people this provider most likely works alongside.
Also at this address 3
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
More connections — 9 related providers in 2 groups
Also performs Removal of skin and tissue, 20.0 sq cm or less 8
Providers in CT who bill this service to Medicare most often.
Common questions
What does Karen J. Terwilliger, MS, APRN specialize in?
Karen J. Terwilliger, MS, APRN is a nurse practitioner in Mystic, CT. That is the designation recorded for this NPI in the federal registry, where it is listed as “Nurse Practitioner — Gerontology”.
NPI registry
Where is Karen J. Terwilliger, MS, APRN located?
Karen J. Terwilliger, MS, APRN is listed at 3 Heron Rd, Mystic, CT 06355. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Karen J. Terwilliger, MS, APRN's phone number?
The number on file is (401) 497-6799. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is the NPI for Karen J. Terwilliger, MS, APRN?
Karen J. Terwilliger, MS, APRN's National Provider Identifier is 1245616705. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
How much experience does Karen J. Terwilliger, MS, APRN have?
Karen J. Terwilliger, MS, APRN has 11+ years experience. Registered with an NPI since 2015. National Provider Identifiers only began in 2005, so a provider who qualified earlier may have practiced for longer than this.
NPI registry
What does Karen J. Terwilliger, MS, APRN do most often?
According to Medicare billing data, Karen J. Terwilliger, MS, APRN performs procedures including removal of skin and tissue, 20.0 sq cm or less, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Karen J. Terwilliger, MS, APRN's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Karen J. Terwilliger, MS, APRN. If this is you, claiming it is free.
Guide.md
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.