Quick answers
- Which hospitals does Mariana Alamillo work at?
- Medicare's official clinician data lists Mariana Alamillo at 1 hospital: Marian Regional Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Mariana Alamillo see patients?
- Medicare's clinician data lists 2 practice locations, including Santa Maria, CA. Call before your visit to confirm the address.
- What is Mariana Alamillo's specialty?
- Medicare lists Physician Assistant as the primary specialty.
- Does Mariana Alamillo accept Medicare assignment?
- Medicare's clinician data says Mariana Alamillo may accept Medicare assignment (as of 2026-10-02). Ask the office whether they accept it for your visit.
- What is Mariana Alamillo's NPI number?
- 1649009986. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Mariana Alamillo works
Medicare's Facility Affiliation Data lists Mariana Alamillo at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Marian Regional Medical CenterSanta Maria, CA · Acute Care Hospital · CCN 050107
Practice locations
Addresses where Mariana Alamillo is enrolled with Medicare (CMS data updated 2026-10-02).
- 1075 E Betteravia Rd, Suite 201Santa Maria, CA 93454
- 2050 S Blosser RdSanta Maria, CA 93458
Specialties
- Physician Assistantprimary
Other physician assistants in Santa Maria
Clinicians with the same Medicare primary specialty in Santa Maria, CA — not a recommendation.
Clinician information
| Credential | PA |
|---|---|
| Graduation year | 2024 |
| Gender (as listed) | Female |
| Medicare assignment | May accept for some services |
| NPI (National Provider Identifier) | 1649009986 |
| 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 2026-10-02, retrieved 2026-10-29
- 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