Medical emergency?Emergency? Call 911. Nearest emergency roomsNearest ERs

Family Practice

Richard G. McKenzie, DO

Works at hospitals in Berlin, NH · Littleton, NH · New Hampshire

Summary

Dr. Richard G. McKenzie, DO is a family doctor at 580 Saint Johnsbury Rd, Littleton, NH 03561. Phone: (603) 444-9000. Accepts Medicare assignment. In 2024, Richard G. McKenzie had 17 Original Medicare patients and 27 services. NPI 1487776449. 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: Family doctor (Medicare lists Family Practice)
  • Address: 580 Saint Johnsbury Rd, Littleton, NH 03561 · Directions
  • Phone: (603) 444‑9000
  • Medicare: Accepts Medicare assignment
  • Hospitals: Androscoggin Valley Hospital, Littleton Regional Healthcare
  • Group practice: Littleton Hospital Association
  • Medical school: University Of New England, College Of Osteo Medicine · graduated 2006 (20 years since medical school)
  • Gender (as listed): Male

From official Medicare data

This page shows what Medicare's official clinician data says about Richard G. McKenzie, 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 Richard G. McKenzie accept Medicare assignment?
Yes. Medicare's clinician data says Richard G. McKenzie 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 Richard G. McKenzie see?
In 2024, CMS data shows 17 Original Medicare patients and 27 services for Richard G. McKenzie. This counts Original Medicare only and measures volume, not quality.
What is Richard G. McKenzie's NPI number?
1487776449. 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 Richard G. McKenzie, 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 patients17
Services billed to Medicare27
Different services or procedures13
Participating Medicare providerYes
Average age of these patients70

Hospitals where Richard G. McKenzie works

Medicare's Facility Affiliation Data lists Richard G. McKenzie 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.

  • Androscoggin Valley HospitalBerlin, NH · Critical Access Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 301310
  • Littleton Regional HealthcareLittleton, NH · Critical Access Hospital · Medicare rating: 1 of 5 stars · Emergency services: listed by Medicare · CCN 301302

Practice locations

Addresses where Richard G. McKenzie is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Richard G. McKenzie as a member of this group (CMS data updated October 2, 2026).

  • Littleton Hospital Association113 clinicians in the group

Specialties

Find other Family Practice doctors in New Hampshire →

Other family doctors in Littleton

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

All family doctors in Littleton →

Other clinicians in Littleton Hospital Association

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

Clinician information

CredentialDO
Medical schoolUniversity Of New England, College Of Osteo Medicine
Graduation year2006 (20 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1487776449
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