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Internal Medicine

Ritche L. Casenas, MD

Works at hospitals in Manchester, NH · New Hampshire

Summary

Dr. Ritche L. Casenas, MD is an internal medicine doctor at 275 Mammoth Rd, Manchester, NH 03109. Accepts Medicare assignment. In 2024, Ritche L. Casenas had 371 Original Medicare patients and 764 services. NPI 1326355777. 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: 275 Mammoth Rd, Manchester, NH 03109 · Directions
  • Medicare: Accepts Medicare assignment
  • Hospitals: Catholic Medical Center, Elliot Hospital
  • Group practice: Elliot Physicians Network
  • Medical school: graduated 2004 (22 years since medical school)
  • Gender (as listed): Male
  • Telehealth: offered

From official Medicare data

This page shows what Medicare's official clinician data says about Ritche L. Casenas, 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 Ritche L. Casenas accept Medicare assignment?
Yes. Medicare's clinician data says Ritche L. Casenas 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 Ritche L. Casenas see?
In 2024, CMS data shows 371 Original Medicare patients and 764 services for Ritche L. Casenas. This counts Original Medicare only and measures volume, not quality.
What is Ritche L. Casenas's NPI number?
1326355777. 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 Ritche L. Casenas, 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 patients371
Services billed to Medicare764
Different services or procedures14
Participating Medicare providerYes
Average age of these patients73

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)400 services
  2. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)273 services
  3. Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more (99212)32 services
  4. Transitional care management services for problem of at least moderate complexity (99495)18 services
  5. Physician or allowed practitioner certification for medicare-covered home health services under a home health plan of care (patient not present), including contacts with home health agency and review of reports of patient status required by physicians and (G0180)12 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 pressure63%
  • Arthritis35%
  • Anxiety27%
  • Diabetes22%
  • Depression20%

Hospitals where Ritche L. Casenas works

Medicare's Facility Affiliation Data lists Ritche L. Casenas 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.

  • Catholic Medical CenterManchester, NH · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 300034
  • Elliot HospitalManchester, NH · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 300012

Practice locations

Addresses where Ritche L. Casenas is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Ritche L. Casenas as a member of this group (CMS data updated October 2, 2026).

  • Elliot Physicians Network77 clinicians in the group

Specialties

Find other Internal Medicine doctors in New Hampshire →

Other internal medicine doctors in Manchester

Clinicians with the same Medicare primary specialty in Manchester, NH — not a recommendation.

All internal medicine doctors in Manchester →

Other clinicians in Elliot Physicians Network

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

Clinician information

CredentialMD
Graduation year2004 (22 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
TelehealthOffers telehealth services
NPI (National Provider Identifier)1326355777
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