Quick answers
- Where does Oliver N. Refugio see patients?
- Medicare's clinician data lists 2 practice locations, including Lancaster, CA and Van Nuys, CA. Call before your visit to confirm the address.
- What is Oliver N. Refugio's specialty?
- Medicare lists Internal Medicine as the primary specialty.
- Does Oliver N. Refugio accept Medicare assignment?
- Yes. Medicare's clinician data says Oliver N. Refugio 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 Oliver N. Refugio?
- (661) 579-9317, as listed in official Medicare / NPI Registry data.
- What is Oliver N. Refugio's NPI number?
- 1144727355. 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 Oliver N. Refugio is enrolled with Medicare (CMS data updated 2026-10-02).
- 43322 Gingham AveLancaster, CA 93535 (661) 579‑9317
- 7515 Van Nuys BlvdVan Nuys, CA 91405 (818) 627‑3050
Group practices
Medicare enrollment lists Oliver N. Refugio as a member of these groups (CMS data updated 2026-10-02).
- County of Los Angeles397 clinicians in the group
- Bartz-Altadonna Community Health Center20 clinicians in the group
Specialties
- Internal Medicineprimary
Other internal medicine doctors in Lancaster
Clinicians with the same Medicare primary specialty in Lancaster, CA — not a recommendation.
Clinician information
| Graduation year | 2018 |
|---|---|
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1144727355 |
| 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