Quick answers
- Does Raymond D. Jennings accept Medicare assignment?
- Yes. Medicare's clinician data says Raymond D. Jennings 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.
- What is Raymond D. Jennings's NPI number?
- 1386659167. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Raymond D. Jennings works
Medicare's Facility Affiliation Data lists Raymond D. Jennings 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.
- Adventist Health ClearlakeClearlake, CA · Critical Access Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 051317
- Adventist Health Howard MemorialWillits, CA · Critical Access Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 051310
- Adventist Health St HelenaSaint Helena, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 050013
Practice locations
Addresses where Raymond D. Jennings is enrolled with Medicare (CMS data updated October 2, 2026).
- 15630 18th AveClearlake, CA 95422 (707) 994‑6486
Group practices
Medicare enrollment lists Raymond D. Jennings as a member of this group (CMS data updated October 2, 2026).
- Adventist Health Clearlake Hospital Inc.87 clinicians in the group
Specialties
- Internal Medicineprimary
Other internal medicine doctors in Clearlake
Clinicians with the same Medicare primary specialty in Clearlake, CA — not a recommendation.
Other clinicians in Adventist Health Clearlake Hospital Inc.
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Loma Linda University School Of Medicine |
| Graduation year | 1962 (64 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1386659167 |
| 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
- 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