Quick answers
- Where does Nathan W. Bornstein see patients?
- Medicare's clinician data lists 2 practice locations, including San Carlos, CA and Palo Alto, CA. Call before your visit to confirm the address.
- What is Nathan W. Bornstein's specialty?
- Medicare lists Emergency Medicine as the primary specialty.
- Does Nathan W. Bornstein accept Medicare assignment?
- Yes. Medicare's clinician data says Nathan W. Bornstein 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 Nathan W. Bornstein?
- (650) 321-4121, as listed in official Medicare / NPI Registry data.
- What is Nathan W. Bornstein's NPI number?
- 1174783773. 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 Nathan W. Bornstein is enrolled with Medicare (CMS data updated 2026-10-02).
- 301 Industrial RdSan Carlos, CA 94070 (650) 321‑4121
- 795 El Camino RealPalo Alto, CA 94301 (415) 600‑1020
Group practices
Medicare enrollment lists Nathan W. Bornstein as a member of this group (CMS data updated 2026-10-02).
- Sutter Bay Medical Foundation3,829 clinicians in the group
Specialties
- Emergency Medicineprimary
Other emergency medicine doctors in San Carlos
Clinicians with the same Medicare primary specialty in San Carlos, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Clvlnd Clinic Lerner College Of Med Of Case Wstn Rsv University |
| Graduation year | 2008 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1174783773 |
| 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