Quick answers
- Where does Maira E. Simental see patients?
- Medicare's clinician data lists 5 practice locations, including Upland, CA, Corona, CA and Wildomar, CA. Call before your visit to confirm the address.
- What is Maira E. Simental's specialty?
- Medicare lists Radiation Oncology as the primary specialty.
- Does Maira E. Simental accept Medicare assignment?
- Yes. Medicare's clinician data says Maira E. Simental 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 Maira E. Simental?
- (909) 949-2242, as listed in official Medicare / NPI Registry data.
- What is Maira E. Simental's NPI number?
- 1891779997. 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 Maira E. Simental is enrolled with Medicare (CMS data updated 2026-10-02).
- 1100 San Bernardino Rd, Suite 1100Upland, CA 91786 (909) 949‑2242
- 320 W 6th StCorona, CA 92882 (951) 898‑2828
- 36450 Inland Valley Dr, Suite 101Wildomar, CA 92595 (951) 696‑0679
- 44274 George Cushman Ct, Suite 100Temecula, CA 92592 (951) 252‑9300
- 6939 Palm CtRiverside, CA 92506 (951) 683‑6771
Group practices
Medicare enrollment lists Maira E. Simental as a member of this group (CMS data updated 2026-10-02).
- City of Hope Medical Foundation982 clinicians in the group
Specialties
- Radiation Oncologyprimary
Other radiation oncologists in Upland
Clinicians with the same Medicare primary specialty in Upland, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Loma Linda University School Of Medicine |
| Graduation year | 1997 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1891779997 |
| 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