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Internal Medicine

Marc Kevin Yee, MD

Works at hospitals in Danbury, CT · Derby, CT · Carmel, NY · Connecticut, New York

Summary

Dr. Marc Kevin Yee, MD is an internal medicine doctor at 21 Elm St, New Milford, CT 06776. Phone: (860) 210-5390. Accepts Medicare assignment. In 2024, Marc Kevin Yee had 77 Original Medicare patients and 108 services. NPI 1871087437. 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: 21 Elm St, New Milford, CT 06776 · Directions (4 more locations)
  • Phone: (860) 210‑5390
  • Medicare: Accepts Medicare assignment
  • Hospitals: Danbury Hospital, Griffin Hospital, Putnam Hospital Center
  • Group practice: Nuvance Health Medical Practice Ct Inc (+1 more)
  • Medical school: graduated 2014 (12 years since medical school)
  • Gender (as listed): Male

From official Medicare data

This page shows what Medicare's official clinician data says about Marc Kevin Yee, 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 Marc Kevin Yee accept Medicare assignment?
Yes. Medicare's clinician data says Marc Kevin Yee 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 Marc Kevin Yee see?
In 2024, CMS data shows 77 Original Medicare patients and 108 services for Marc Kevin Yee. This counts Original Medicare only and measures volume, not quality.
What is Marc Kevin Yee's NPI number?
1871087437. 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 Marc Kevin Yee, 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 patients77
Services billed to Medicare108
Different services or procedures11
Participating Medicare providerYes
Average age of these patients71

Most frequent services

  1. Hemoglobin a1c level (83036)65 services
  2. Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report (93000)18 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 blood pressure75%
  • Diabetes75%
  • High cholesterol74%
  • Arthritis45%
  • Chronic kidney disease45%
  • Ischemic heart disease29%

Hospitals where Marc Kevin Yee works

Medicare's Facility Affiliation Data lists Marc Kevin Yee 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.

  • Danbury HospitalDanbury, CT · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 070033
  • Griffin HospitalDerby, CT · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 070031
  • Putnam Hospital CenterCarmel, NY · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 330273

Practice locations

Addresses where Marc Kevin Yee is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Marc Kevin Yee as a member of these groups (CMS data updated October 2, 2026).

  • Nuvance Health Medical Practice Ct Inc747 clinicians in the group
  • Golden Valley Health Centers113 clinicians in the group

Specialties

Find other Internal Medicine doctors in Connecticut →

Other internal medicine doctors in New Milford

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

All internal medicine doctors in New Milford →

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
Graduation year2014 (12 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1871087437
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