Quick answers
- Where does Ruby Jane Sia see patients?
- Medicare's clinician data lists 1 practice location in Apple Valley, CA. Call before your visit to confirm the address.
- What is Ruby Jane Sia's specialty?
- Medicare lists Internal Medicine as the primary specialty.
- Does Ruby Jane Sia accept Medicare assignment?
- Yes. Medicare's clinician data says Ruby Jane Sia 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 Ruby Jane Sia?
- (760) 946-3888, as listed in official Medicare / NPI Registry data.
- What is Ruby Jane Sia's NPI number?
- 1518061860. 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 Ruby Jane Sia is enrolled with Medicare (CMS data updated 2026-10-02).
- 16008 Tuscola Rd, Suite 1Apple Valley, CA 92307 (760) 946‑3888
Specialties
- Internal Medicineprimary
Other internal medicine doctors in Apple Valley
Clinicians with the same Medicare primary specialty in Apple Valley, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1991 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1518061860 |
| 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