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Internal Medicine

Michele C. Twigg, MD

Works at hospitals in Hartford, CT · Connecticut

Summary

Dr. Michele C. Twigg, MD is an internal medicine doctor at 100 Simsbury Rd, Avon, CT 06001. Phone: (860) 258-3480. Accepts Medicare assignment. In 2024, Michele C. Twigg had 191 Original Medicare patients and 805 services. NPI 1154426377. 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: 100 Simsbury Rd, Avon, CT 06001 · Directions (3 more locations)
  • Phone: (860) 258‑3480
  • Medicare: Accepts Medicare assignment
  • Hospital: Hartford Hospital
  • Group practice: Starling Physicians, PLLC (+1 more)
  • Medical school: University Of Rochester School Of Medicine And Dentistry · graduated 1994 (32 years since medical school)
  • Gender (as listed): Female

From official Medicare data

This page shows what Medicare's official clinician data says about Michele C. Twigg, 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 Michele C. Twigg accept Medicare assignment?
Yes. Medicare's clinician data says Michele C. Twigg 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 Michele C. Twigg see?
In 2024, CMS data shows 191 Original Medicare patients and 805 services for Michele C. Twigg. This counts Original Medicare only and measures volume, not quality.
What is Michele C. Twigg's NPI number?
1154426377. 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 Michele C. Twigg, 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 patients191
Services billed to Medicare805
Different services or procedures27
Participating Medicare providerYes
Average age of these patients78

Most frequent services

  1. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)185 services
  2. 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)185 services
  3. Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)123 services
  4. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)111 services
  5. Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report (93000)73 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 pressure71%
  • Arthritis37%
  • Ischemic heart disease24%
  • Anxiety24%
  • Osteoporosis24%

Hospitals where Michele C. Twigg works

Medicare's Facility Affiliation Data lists Michele C. Twigg 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.

  • Hartford HospitalHartford, CT · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 070025

Practice locations

Addresses where Michele C. Twigg is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Michele C. Twigg as a member of these groups (CMS data updated October 2, 2026).

  • Starling Physicians, PLLC283 clinicians in the group
  • McLean Fund108 clinicians in the group

Specialties

Find other Internal Medicine doctors in Connecticut →

Other internal medicine doctors in Avon

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

All internal medicine doctors in Avon →

Other clinicians in Starling Physicians, PLLC

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

Clinician information

CredentialMD
Medical schoolUniversity Of Rochester School Of Medicine And Dentistry
Graduation year1994 (32 years since medical school)
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1154426377
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