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Ophthalmology

Charles C. Calenda, MD

Works at hospitals in Providence, RI · Rhode Island

Summary

Dr. Charles C. Calenda, MD is an ophthalmologist at 404 Toll Gate Rd, Warwick, RI 02886. Phone: (401) 737-2200. Accepts Medicare assignment. In 2024, Charles C. Calenda had 662 Original Medicare patients and 1,896 services. NPI 1275557720. 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: Ophthalmologist (Medicare lists Ophthalmology)
  • Address: 404 Toll Gate Rd, Warwick, RI 02886 · Directions (1 more location)
  • Phone: (401) 737‑2200
  • Medicare: Accepts Medicare assignment
  • Hospital: Roger Williams Medical Center
  • Group practice: Providence Eye Associates Inc (+1 more)
  • Medical school: graduated 1979 (47 years since medical school)
  • Gender (as listed): Male

From official Medicare data

This page shows what Medicare's official clinician data says about Charles C. Calenda, 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 Charles C. Calenda accept Medicare assignment?
Yes. Medicare's clinician data says Charles C. Calenda 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 Charles C. Calenda see?
In 2024, CMS data shows 662 Original Medicare patients and 1,896 services for Charles C. Calenda. This counts Original Medicare only and measures volume, not quality.
What is Charles C. Calenda's NPI number?
1275557720. 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 Charles C. Calenda, 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 patients662
Services billed to Medicare1,896
Different services or procedures26
Participating Medicare providerYes
Average age of these patients77

Most frequent services

  1. Established patient complete exam of visual system (92014)742 services
  2. Photography of the retina (92250)690 services
  3. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)70 services
  4. Exam of visual field with extended testing (92083)66 services
  5. 2d ultrasound scan of eye tissue and structures (76512)39 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%
  • Arthritis48%
  • Diabetes31%
  • Anxiety28%
  • Ischemic heart disease26%

Hospitals where Charles C. Calenda works

Medicare's Facility Affiliation Data lists Charles C. Calenda 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.

Practice locations

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

Group practices

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

  • Providence Eye Associates Inc3 clinicians in the group
  • Charles C Calenda MD Inc2 clinicians in the group

Specialties

Find other Ophthalmology doctors in Rhode Island →

Other ophthalmologists in Warwick

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

All ophthalmologists in Warwick →

Other clinicians in Providence Eye Associates Inc

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

Clinician information

CredentialMD
Graduation year1979 (47 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1275557720
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