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Rheumatology

David L. Chamberland, MD

Works at hospitals in Medford, OR · Grants Pass, OR · Gold Beach, OR … · Oregon

Summary

Dr. David L. Chamberland, MD is a rheumatologist at 1365 Poplar Dr, Medford, OR 97504. Phone: (541) 773-2233. Accepts Medicare assignment. In 2024, David L. Chamberland had 479 Original Medicare patients and 208,103 services. NPI 1447293311. 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.

From official Medicare data

This page shows what Medicare's official clinician data says about David L. Chamberland, 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 David L. Chamberland accept Medicare assignment?
Yes. Medicare's clinician data says David L. Chamberland 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 David L. Chamberland see?
In 2024, CMS data shows 479 Original Medicare patients and 208,103 services for David L. Chamberland. This counts Original Medicare only and measures volume, not quality.
What is David L. Chamberland's NPI number?
1447293311. 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 David L. Chamberland, 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 patients479
Services billed to Medicare208,103
Different services or procedures84
Participating Medicare providerYes
Average age of these patients73

Most frequent services

  1. Injection, tocilizumab, 1 mg (J3262)84,120 services
  2. Injection, certolizumab pegol, 1 mg (code may be used for medicare when drug administered under the direct supervision of a physician, not for use when drug is self administered) (J0717)37,200 services
  3. Injection, abatacept, 10 mg (code may be used for medicare when drug administered under the direct supervision of a physician, not for use when drug is self administered) (J0129)31,172 services
  4. Injection, golimumab, 1 mg, for intravenous use (J1602)21,850 services
  5. Injection, infliximab, excludes biosimilar, 10 mg (J1745)11,236 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).

  • Arthritis75%
  • High blood pressure68%
  • High cholesterol66%
  • Osteoporosis29%
  • Diabetes25%
  • Depression21%

Hospitals where David L. Chamberland works

Medicare's Facility Affiliation Data lists David L. Chamberland 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 David L. Chamberland is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

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

  • Rheumatology Clinic LLC3 clinicians in the group

Specialties

Find other Rheumatology doctors in Oregon →

Other rheumatologists in Oregon

Clinicians with the same Medicare primary specialty in Oregon — not a recommendation.

All rheumatologists in Oregon →

Other clinicians in Rheumatology Clinic LLC

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

Clinician information

CredentialMD
Medical schoolOregon Health Sciences University School Of Medicine
Graduation year2001 (25 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1447293311
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