Quick answers
- Does Pierre R. Constantin accept Medicare assignment?
- Yes. Medicare's clinician data says Pierre R. Constantin 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 Pierre R. Constantin see?
- In 2024, CMS data shows 80 Original Medicare patients and 349 services for Pierre R. Constantin. This counts Original Medicare only and measures volume, not quality.
- What is Pierre R. Constantin's NPI number?
- 1538202668. 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 Pierre R. Constantin, 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 patients | 80 |
|---|---|
| Services billed to Medicare | 349 |
| Different services or procedures | 2 |
| Participating Medicare provider | Yes |
| Average age of these patients | 75 |
Most frequent services
- Chiropractic manipulative treatment, 3-4 spinal regions (98941)347 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 pressure63%
- High cholesterol60%
- Arthritis54%
- Ischemic heart disease23%
- Chronic kidney disease21%
- Diabetes20%
Practice locations
Addresses where Pierre R. Constantin is enrolled with Medicare (CMS data updated October 2, 2026).
- 2376 Main St, Suite 1Ferndale, WA 98248 (360) 312‑4656
Group practices
Medicare enrollment lists Pierre R. Constantin as a member of this group (CMS data updated October 2, 2026).
- Ferndale Chiropractic Clinic LLC2 clinicians in the group
Specialties
- Chiropracticprimary
Other chiropractors in Ferndale
Clinicians with the same Medicare primary specialty in Ferndale, WA — not a recommendation.
Other clinicians in Ferndale Chiropractic Clinic LLC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | CH |
|---|---|
| School | Sherman College Of Straight Chiropractic |
| Graduation year | 1982 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1538202668 |
| Corrections | Report 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
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians