Quick answers
- Does Richard W. Pierce Jr. accept Medicare assignment?
- Yes. Medicare's clinician data says Richard W. Pierce Jr. 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 W. Pierce Jr. see?
- In 2024, CMS data shows 44 Original Medicare patients and 213 services for Richard W. Pierce Jr.. This counts Original Medicare only and measures volume, not quality.
- What is Richard W. Pierce Jr.'s NPI number?
- 1396708640. 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 W. Pierce Jr., 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 | 44 |
|---|---|
| Services billed to Medicare | 213 |
| Different services or procedures | 2 |
| Participating Medicare provider | Yes |
| Average age of these patients | 72 |
Most frequent services
- Chiropractic manipulative treatment, 3-4 spinal regions (98941)212 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 cholesterol70%
- High blood pressure57%
- Arthritis41%
Practice locations
Addresses where Richard W. Pierce Jr. is enrolled with Medicare (CMS data updated October 2, 2026).
- 2489 Discovery Bay BlvdDiscovery Bay, CA 94505 (925) 634‑2400
Specialties
- Chiropracticprimary
Other chiropractors in California
Clinicians with the same Medicare primary specialty in California — not a recommendation.
Clinician information
| Credential | DC |
|---|---|
| Chiropractic college | Palmer College Chiropractic - West Sunnyvale |
| Graduation year | 2002 (24 years since chiropractic college) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1396708640 |
| 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