Quick answers
- Does Raymond S. Pierson accept Medicare assignment?
- Yes. Medicare's clinician data says Raymond S. Pierson 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 Raymond S. Pierson see?
- In 2024, CMS data shows 407 Original Medicare patients and 1,990 services for Raymond S. Pierson. This counts Original Medicare only and measures volume, not quality.
- What is Raymond S. Pierson's NPI number?
- 1801852611. 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 Raymond S. Pierson, 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 | 407 |
|---|---|
| Services billed to Medicare | 1,990 |
| Different services or procedures | 16 |
| Participating Medicare provider | Yes |
| Average age of these patients | 76 |
Most frequent services
- Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes (99231)799 services
- Needle measurement of electrical activity in arm or leg muscles, complete study (95886)308 services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)233 services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)165 services
- Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)132 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 pressure75%
- High cholesterol75%
- Arthritis72%
- Ischemic heart disease39%
- Diabetes37%
- Chronic kidney disease37%
Hospitals where Raymond S. Pierson works
Medicare's Facility Affiliation Data lists Raymond S. Pierson 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.
- St Johns Regional Medical CenterOxnard, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 050082
Practice locations
Addresses where Raymond S. Pierson is enrolled with Medicare (CMS data updated October 2, 2026).
- 2221 Wankel WayOxnard, CA 93030 (805) 278‑0212
Specialties
Find other Physical Medicine and Rehabilitation doctors in California →
Other rehabilitation doctors in California
Clinicians with the same Medicare primary specialty in California — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Massachusetts Medical School |
| Graduation year | 1984 (42 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1801852611 |
| 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
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- 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