Quick answers
- Which hospitals does Robert T. Santos work at?
- Medicare's official clinician data lists Robert T. Santos at 2 hospitals: Stanford Health Care and Stanford Health Care Tri-Valley. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Robert T. Santos see patients?
- Medicare's clinician data lists 7 practice locations, including San Ramon, CA, Livermore, CA and Castro Valley, CA. Call before your visit to confirm the address.
- What is Robert T. Santos's specialty?
- Medicare lists Internal Medicine as the primary specialty, and also Otolaryngology.
- Does Robert T. Santos accept Medicare assignment?
- Yes. Medicare's clinician data says Robert T. Santos 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.
- Does Robert T. Santos offer telehealth?
- Medicare's clinician data says Robert T. Santos offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Robert T. Santos?
- (925) 373-8000, as listed in official Medicare / NPI Registry data.
- What is Robert T. Santos's NPI number?
- 1356340384. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Robert T. Santos works
Medicare's Facility Affiliation Data lists Robert T. Santos at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Stanford Health CareStanford, CA · Acute Care Hospital · CCN 050441
- Stanford Health Care Tri-ValleyPleasanton, CA · Acute Care Hospital · CCN 050283
Practice locations
Addresses where Robert T. Santos is enrolled with Medicare (CMS data updated 2026-10-02). The first 5 of 7; the Medicare profile lists all.
- 11030 Bollinger Canyon Rd, Suite 250San Ramon, CA 94582 (925) 373‑8000
- 1133 E Stanley Blvd, Suite 101Livermore, CA 94550 (925) 454‑4280
- 20642 John DrCastro Valley, CA 94546 (888) 924‑1036
- 319 Diablo Rd, Suite 105Danville, CA 94526 (925) 314‑0260
- 4725 1st St, Suite 100Pleasanton, CA 94566 (925) 462‑7060
Group practices
Medicare enrollment lists Robert T. Santos as a member of this group (CMS data updated 2026-10-02).
- University Healthcare Alliance327 clinicians in the group
Specialties
- Internal Medicineprimary
- Otolaryngologyalso
Other internal medicine doctors in San Ramon
Clinicians with the same Medicare primary specialty in San Ramon, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | George Washington University School Of Medicine |
| Graduation year | 1978 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1356340384 |
| 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