Quick answers
- Which hospitals does Ruby Y F Chen work at?
- Medicare's official clinician data lists Ruby Y F Chen at 1 hospital: Montclair Hospital Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Ruby Y F Chen see patients?
- Medicare's clinician data lists 2 practice locations, including Claremont, CA and Chino Hills, CA. Call before your visit to confirm the address.
- What is Ruby Y F Chen's specialty?
- Medicare lists Family Practice as the primary specialty.
- Does Ruby Y F Chen accept Medicare assignment?
- Medicare's clinician data says Ruby Y F Chen may accept Medicare assignment (as of 2026-10-02). Ask the office whether they accept it for your visit.
- What is the phone number for Ruby Y F Chen?
- (909) 865-9977, as listed in official Medicare / NPI Registry data.
- What is Ruby Y F Chen's NPI number?
- 1811627276. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Ruby Y F Chen works
Medicare's Facility Affiliation Data lists Ruby Y F Chen at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Montclair Hospital Medical CenterMontclair, CA · Acute Care Hospital · CCN 050758
Practice locations
Addresses where Ruby Y F Chen is enrolled with Medicare (CMS data updated 2026-10-02).
- 1601 Monte Vista Ave, Suite 190Claremont, CA 91711 (909) 865‑9977
- 3110 Chino Ave, Suite 150aChino Hills, CA 91709 (909) 630‑7490
Group practices
Medicare enrollment lists Ruby Y F Chen as a member of this group (CMS data updated 2026-10-02).
- Premier Family Medicine Associates, Inc65 clinicians in the group
Specialties
- Family Practiceprimary
Other family doctors in Claremont
Clinicians with the same Medicare primary specialty in Claremont, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2021 |
| Gender (as listed) | Female |
| Medicare assignment | May accept for some services |
| NPI (National Provider Identifier) | 1811627276 |
| 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