Quick answers
- Where does Ray H. Rivas see patients?
- Medicare's clinician data lists 1 practice location in San Luis Obispo, CA. Call before your visit to confirm the address.
- What is Ray H. Rivas's specialty?
- Medicare lists General Surgery as the primary specialty.
- Does Ray H. Rivas accept Medicare assignment?
- Yes. Medicare's clinician data says Ray H. Rivas accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- What is the phone number for Ray H. Rivas?
- (805) 321-8471, as listed in official Medicare / NPI Registry data.
- What is Ray H. Rivas's NPI number?
- 1003173816. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Practice locations
Addresses where Ray H. Rivas is enrolled with Medicare (CMS data updated 2026-10-02).
- 100 Casa St, Suite D3San Luis Obispo, CA 93405 (805) 321‑8471
Specialties
- General Surgeryprimary
Other general surgeons in San Luis Obispo
Clinicians with the same Medicare primary specialty in San Luis Obispo, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of North Dakota School Of Medicine |
| Graduation year | 2012 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1003173816 |
| 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 2026-10-02, retrieved 2026-10-29
- 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