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Healthcare Providers & Facilities in Greenwich, CT

Public healthcare directory of 1,187 individual practitioners and 320 healthcare facilities located in Greenwich, Connecticut.

1,187 Practitioners
320 Facilities
169 Specialties

Medical Specialties in Greenwich

Select a specialty to view practitioner listings, practice locations, and qualifications.

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All Specialties in Greenwich

Specialties with enough public records for a comparison with U.S. figures, besides those named above, plus the 60 largest of 152 more with at least one listed practitioner. Number of practitioners in brackets.

Chiropractic Providers

Dietary & Nutritional Service Providers

Eye and Vision Services Providers

Other Service Providers

Respiratory, Developmental, Rehabilitative and Restorative Service Providers

Speech, Language and Hearing Service Providers

Featured Healthcare Providers in Greenwich

Practitioner profiles in Greenwich, CT with recent CMS Medicare or Open Payments data.

Kelsie Trillo , MSN-APRN-FNP-BC

Nurse Practitioner - Family

500 W Putnam Ave Ste 110, Greenwich, CT
Phone: 2034227250
NPI 1780348151

Dr. Lynne Haven , MD

Dermatology

49 Lake Ave, Greenwich, CT
Phone: 2038694242
NPI 1215070917

Dr. James Brunetti , DO

Internal Medicine

49 Lake Ave Ste 206, Greenwich, CT
Phone: 2039001090
NPI 1578619797

Dr. Mychael Delgardo , MD

Student in an Organized Health Care Education/Training Program

5 Perryridge Rd, Greenwich, CT
Phone: 2028633000
NPI 1285477133

Dr. Linda Grant , MD

Physical Medicine & Rehabilitation

5 Perryridge Rd, Greenwich, CT
Phone: 2038633292
NPI 1750305678

Dr. Dandan Tu , MD

Physical Medicine & Rehabilitation

1165 King Street, Greenwich, CT
Phone: 2036658193
NPI 1386970960

Largest Cities in Connecticut

Other Connecticut cities with a full directory, by the number of active practitioners listed in NPPES.

How Greenwich compares with the U.S.

Compared with the U.S. as a whole, Greenwich has more clinicians in Physician Assistant - Surgical (23.3x), clinicians in Orthopaedic Surgery (13.7x) and Hospitalists (9.8x) per 100,000 residents.

Greenwich has 8,025 active clinicians per 100,000 residents, compared with 2,198 for the U.S.

What these numbers mean

Clinicians per 100,000 residents compares places of different sizes. We count active clinicians who list a practice address in the area in the federal NPI registry (NPPES) and divide by the number of people who live there, according to the U.S. Census Bureau. The U.S. rate is the same calculation for the whole country.

A higher number does not mean it is easier to get an appointment, that wait times are shorter, or that care is better. It also does not show how many clinicians are accepting new patients or which insurance plans they take. A lower number does not by itself mean there is a shortage.

City counts use the city name in each clinician's practice address. That postal city can cover a larger or smaller area than the city limits the Census Bureau uses for population, and many clinicians list only one address even if they work in several places. Cities with hospitals or large medical centers often list more specialists than the number of residents alone would suggest, because patients also come from nearby areas.

87% of clinicians in Greenwich listed in the CMS Medicare file (298 of 344) accept Medicare assignment. That is similar to the Connecticut share of 91%.

Only 344 of 1,187 active clinicians in Greenwich appear in the CMS Medicare file, so this share describes that smaller group.

What is Medicare assignment?

A clinician who accepts Medicare assignment agrees to take the Medicare-approved amount as full payment for services that Original Medicare covers. You usually still pay your deductible and coinsurance. This comes from the CMS Doctors and Clinicians file and applies to Original Medicare only. Medicare Advantage plans have their own provider networks. It does not show whether a clinician is taking new patients.

Some clinicians are listed as "may accept assignment," which means they can decide case by case. Clinicians without an assignment flag, or who are not in the CMS file, are not counted as accepting assignment. That does not mean they refuse Medicare. Ask the office before your visit.

23% of clinicians in Greenwich listed in the CMS Medicare file (80 of 344) have a CMS telehealth indicator, meaning their recent Medicare claims include telehealth services. That is similar to the Connecticut share of 22%.

About the telehealth indicator

The telehealth indicator comes from CMS. It marks clinicians whose recent paid Medicare claims include services delivered by telehealth. It means a clinician has provided some services by telehealth, not that every visit can be done online. A clinician without the indicator may still offer telehealth, for example to patients who are not on Medicare. Ask the office which visits can be done by video or phone.

These figures summarize public federal data. They do not measure quality of care, appointment availability, or whether a clinician accepts your insurance or new patients. Registry addresses can be out of date. Please confirm details directly with the office and your plan. This information is not medical advice.

Prepared by T-MedInfo from NPPES, CMS and U.S. Census Bureau data. Questions or corrections: support@true-medinfo.com ยท Methodology

Sources: Clinician counts and practice addresses: NPPES NPI Registry, Centers for Medicare & Medicaid Services (CMS), data as of August 2026. Medicare assignment and telehealth indicators: CMS Doctors and Clinicians National Downloadable File. Population: U.S. Census Bureau, American Community Survey 2020-2024 5-Year Estimates, Table B01003 (Total Population).

Greenwich CMS Healthcare & Financial Disclosures

CMS Part D Prescribers (2024), Open Payments (program year 2025), Medicare (PECOS) enrollment and Part B (2024) data for Greenwich, CT

Source: CMS public datasets

Healthcare operations in Greenwich, CT encompass 1,187 active individual practitioners and 320 registered medical facilities across 169 clinical specialties.

According to CMS Medicare Part D analytics for 2024, prescription drug volume in Greenwich accounts for $43.7 Million across 197,096 prescription claims. 485 local practitioners have a Medicare (PECOS) enrollment record. Open Payments data for program year 2025 list $0.6 Million in payments reported by companies to 240 local practitioners; a reported payment does not necessarily mean the financial relationship is improper.

Medicare Part D Prescriptions (2024) $43.7M 197,096 Prescription Claims Source: data.cms.gov
Open Payments Sunshine Act (2025) $0.6M 240 Recipients Disclosed A reported payment does not necessarily mean the financial relationship is improper. Source: openpaymentsdata.cms.gov
Medicare (PECOS) Enrollment 485 Enrolled Medicare Practitioners Source: data.cms.gov
Medicare Part B Allowed Volume (2024) $30.1M 585,918 Services Performed Source: data.cms.gov

CMS PECOS: Eligible to Order or Refer for Medicare in Greenwich

Part B Lab & Imaging Eligible: 420
Durable Medical Equipment (DME): 443
Home Health Agency (HHA): 381
Source: CMS Order and Referring