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Anesthesiology

Francis Martinson, MD

Works at hospitals in Warwick, RI · Rhode Island

Summary

Dr. Francis Martinson, MD is an anesthesiologist at 455 Toll Gate Rd, Warwick, RI 02886. Phone: (401) 737-7000. Accepts Medicare assignment. In 2024, Francis Martinson had 265 Original Medicare patients and 308 services. NPI 1205290533. 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: Anesthesiologist (Medicare lists Anesthesiology)
  • Address: 455 Toll Gate Rd, Warwick, RI 02886 · Directions
  • Phone: (401) 737‑7000
  • Medicare: Accepts Medicare assignment
  • Hospital: Kent County Memorial Hospital
  • Group practice: Narragansett Bay Anesthesia LLC
  • Medical school: Geisel School Of Medicine At Dartmouth · graduated 2016 (10 years since medical school)
  • Gender (as listed): Male

From official Medicare data

This page shows what Medicare's official clinician data says about Francis Martinson, 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 Francis Martinson accept Medicare assignment?
Yes. Medicare's clinician data says Francis Martinson 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 Francis Martinson see?
In 2024, CMS data shows 265 Original Medicare patients and 308 services for Francis Martinson. This counts Original Medicare only and measures volume, not quality.
What is Francis Martinson's NPI number?
1205290533. 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 Francis Martinson, 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 patients265
Services billed to Medicare308
Different services or procedures55
Participating Medicare providerYes
Average age of these patients75

Most frequent services

  1. Anesthesia for other procedure on large bowel using an endoscope (00811)44 services
  2. Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope (00731)37 services
  3. Anesthesia for procedure on small and large bowel using an endoscope (00813)18 services
  4. Anesthesia for other closed procedure on chest (00520)16 services
  5. Injection of anesthetic agent and/or steroid into thigh nerve (femoral nerve) (64447)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%
  • Arthritis52%
  • Anxiety37%
  • Ischemic heart disease36%
  • Diabetes31%

Hospitals where Francis Martinson works

Medicare's Facility Affiliation Data lists Francis Martinson 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.

  • Kent County Memorial HospitalWarwick, RI · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 410009

Practice locations

Addresses where Francis Martinson is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Francis Martinson as a member of this group (CMS data updated October 2, 2026).

  • Narragansett Bay Anesthesia LLC95 clinicians in the group

Specialties

Find other Anesthesiology doctors in Rhode Island →

Other anesthesiologists in Warwick

Clinicians with the same Medicare primary specialty in Warwick, RI — not a recommendation.

All anesthesiologists in Warwick →

Other clinicians in Narragansett Bay Anesthesia LLC

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

Clinician information

CredentialMD
Medical schoolGeisel School Of Medicine At Dartmouth
Graduation year2016 (10 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1205290533
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