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Emergency Medicine

Robert F. Carroll Jr., MD

Works at hospitals in Derby, CT · Connecticut

Summary

Dr. Robert F. Carroll Jr., MD is an emergency medicine doctor at 130 Division St, Derby, CT 06418. Phone: (203) 735-7421. Accepts Medicare assignment. In 2024, Robert F. Carroll Jr. had 375 Original Medicare patients and 468 services. NPI 1306818810. 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: Emergency medicine doctor (Medicare lists Emergency Medicine)
  • Address: 130 Division St, Derby, CT 06418 · Directions
  • Phone: (203) 735‑7421
  • Medicare: Accepts Medicare assignment
  • Hospital: Griffin Hospital
  • Group practice: Emergency Physicians of Connecticut PC
  • Medical school: graduated 1997 (29 years since medical school)
  • Gender (as listed): Male

From official Medicare data

This page shows what Medicare's official clinician data says about Robert F. Carroll Jr., 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 Robert F. Carroll Jr. accept Medicare assignment?
Yes. Medicare's clinician data says Robert F. Carroll Jr. 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 Robert F. Carroll Jr. see?
In 2024, CMS data shows 375 Original Medicare patients and 468 services for Robert F. Carroll Jr.. This counts Original Medicare only and measures volume, not quality.
What is Robert F. Carroll Jr.'s NPI number?
1306818810. 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 Robert F. Carroll Jr., 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 patients375
Services billed to Medicare468
Different services or procedures23
Participating Medicare providerYes
Average age of these patients75

Most frequent services

  1. Emergency department visit with high level of medical decision making (99285)218 services
  2. Emergency department visit with moderate level of medical decision making (99284)65 services
  3. Critical care, first 30-74 minutes (99291)62 services
  4. Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only (93010)37 services
  5. Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)14 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%
  • High cholesterol75%
  • Arthritis50%
  • Anxiety42%
  • Ischemic heart disease37%
  • Depression36%

Hospitals where Robert F. Carroll Jr. works

Medicare's Facility Affiliation Data lists Robert F. Carroll Jr. 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.

  • Griffin HospitalDerby, CT · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 070031

Practice locations

Addresses where Robert F. Carroll Jr. is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Robert F. Carroll Jr. as a member of this group (CMS data updated October 2, 2026).

  • Emergency Physicians of Connecticut PC30 clinicians in the group

Specialties

Find other Emergency Medicine doctors in Connecticut →

Other emergency medicine doctors in Derby

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

All emergency medicine doctors in Derby →

Other clinicians in Emergency Physicians of Connecticut PC

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

Clinician information

CredentialMD
Graduation year1997 (29 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1306818810
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