Medical emergency?Emergency? Call 911. Nearest emergency roomsNearest ERs

Internal Medicine

Elizabeth J. McKinnis, MD

Works at hospitals in Bridgeport, CT · Danbury, CT · Greenwich, CT … · Connecticut

Summary

Dr. Elizabeth J. McKinnis, MD is an internal medicine doctor at 1931 Black Rock Tpke, Fairfield, CT 06825. Phone: (203) 384-8681. Accepts Medicare assignment. In 2024, Elizabeth J. McKinnis had 269 Original Medicare patients and 1,229 services. NPI 1659628915. Source: CMS National Downloadable File, updated October 2, 2026; CMS Facility Affiliation Data, updated October 2, 2026; CMS Medicare Physician & Other Practitioners, data year 2024.

  • Specialty: Internal medicine doctor (Medicare lists Internal Medicine)
  • Address: 1931 Black Rock Tpke, Fairfield, CT 06825 · Directions (3 more locations)
  • Phone: (203) 384‑8681
  • Medicare: Accepts Medicare assignment
  • Hospitals: Bridgeport Hospital, Danbury Hospital, Greenwich Hospital Association - and 1 more
  • Group practice: Nuvance Health Medical Practice Ct Inc (+2 more)
  • Medical school: University Of Washington School Of Medicine · graduated 1996 (30 years since medical school)
  • Gender (as listed): Female
  • Telehealth: offered

From official Medicare data

This page shows what Medicare's official clinician data says about Elizabeth J. McKinnis, joined by NPI number (data updated October 2, 2026). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

Quick answers

Does Elizabeth J. McKinnis accept Medicare assignment?
Yes. Medicare's clinician data says Elizabeth J. McKinnis accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
How many Medicare patients does Elizabeth J. McKinnis see?
In 2024, CMS data shows 269 Original Medicare patients and 1,229 services for Elizabeth J. McKinnis. This counts Original Medicare only and measures volume, not quality.
What is Elizabeth J. McKinnis's NPI number?
1659628915. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Medicare activity in 2024

Official CMS public-use data for Elizabeth J. McKinnis, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.

Original Medicare patients269
Services billed to Medicare1,229
Different services or procedures44
Participating Medicare providerYes
Average age of these patients76

Most frequent services

  1. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)268 services
  2. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)258 services
  3. Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's (G2211)239 services
  4. Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)91 services
  5. Administration of influenza virus vaccine (G0008)46 services

Chronic conditions among these patients

Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).

  • High cholesterol75%
  • High blood pressure59%
  • Arthritis49%
  • Osteoporosis23%
  • Anxiety21%
  • Atrial fibrillation21%

Hospitals where Elizabeth J. McKinnis works

Medicare's Facility Affiliation Data lists Elizabeth J. McKinnis at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.

  • Bridgeport HospitalBridgeport, CT · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 070010
  • Danbury HospitalDanbury, CT · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 070033
  • Greenwich Hospital Association -Greenwich, CT · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 070018
  • Norwalk HospitalNorwalk, CT · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 070034

Practice locations

Addresses where Elizabeth J. McKinnis is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Elizabeth J. McKinnis as a member of these groups (CMS data updated October 2, 2026).

  • Nuvance Health Medical Practice Ct Inc747 clinicians in the group
  • Rehabilitation Associates Inc529 clinicians in the group
  • Ptsma Inc224 clinicians in the group

Specialties

Find other Internal Medicine doctors in Connecticut →

Other internal medicine doctors in Fairfield

Clinicians with the same Medicare primary specialty in Fairfield, CT — not a recommendation.

All internal medicine doctors in Fairfield →

Other clinicians in Nuvance Health Medical Practice Ct Inc

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

Clinician information

CredentialMD
Medical schoolUniversity Of Washington School Of Medicine
Graduation year1996 (30 years since medical school)
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
TelehealthOffers telehealth services
NPI (National Provider Identifier)1659628915
CorrectionsReport an error or suggest an update →

Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.

Sources

  1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
  2. Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
  3. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
  4. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
  5. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  6. Medicare Care Compare — official Medicare tool to look up clinicians