Quick answers
- Which hospitals does Tejinder Singh work at?
- Medicare's official clinician data lists Tejinder Singh at 3 hospitals: Casa Colina Hospital, Pomona Valley Hospital Medical Center and San Antonio Regional Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Tejinder Singh see patients?
- Medicare's clinician data lists 4 practice locations, including Upland, CA. Call before your visit to confirm the address.
- What is Tejinder Singh's specialty?
- Medicare lists Internal Medicine as the primary specialty.
- Does Tejinder Singh accept Medicare assignment?
- Yes. Medicare's clinician data says Tejinder Singh 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 Tejinder Singh?
- (909) 985-2872, as listed in official Medicare / NPI Registry data.
- What is Tejinder Singh's NPI number?
- 1104820729. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Tejinder Singh works
Medicare's Facility Affiliation Data lists Tejinder Singh at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Casa Colina HospitalPomona, CA · Acute Care Hospital · CCN 050782
- Pomona Valley Hospital Medical CenterPomona, CA · Acute Care Hospital · CCN 050231
- San Antonio Regional HospitalUpland, CA · Acute Care Hospital · CCN 050099
Practice locations
Addresses where Tejinder Singh is enrolled with Medicare (CMS data updated 2026-10-02).
- 914 W Foothill Blvd, Suite BUpland, CA 91786
- 914 W Foothill Blvd BUpland, CA 91786 (909) 985‑2872
- 914 W Foothill Blvd B, Tejinder Singh MdsUpland, CA 91786
- 999 San Bernardino RdUpland, CA 91786 (909) 985‑2811
Group practices
Medicare enrollment lists Tejinder Singh as a member of these groups (CMS data updated 2026-10-02).
- Sach Physician Billing Trust3 clinicians in the group
- Mukesh Amin MD and Tejinder Singh MD Inc2 clinicians in the group
Specialties
- Internal Medicineprimary
Other internal medicine doctors in Upland
Clinicians with the same Medicare primary specialty in Upland, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1978 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1104820729 |
| 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