Quick answers
- Which hospitals does Nicholas Gonsalves work at?
- Medicare's official clinician data lists Nicholas Gonsalves at 1 hospital: Alta Bates Summit Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Nicholas Gonsalves see patients?
- Medicare's clinician data lists 5 practice locations, including Hayward, CA, Fremont, CA and Oakland, CA. Call before your visit to confirm the address.
- What is Nicholas Gonsalves's specialty?
- Medicare lists General Surgery as the primary specialty.
- Does Nicholas Gonsalves accept Medicare assignment?
- Yes. Medicare's clinician data says Nicholas Gonsalves 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 Nicholas Gonsalves?
- (510) 264-4000, as listed in official Medicare / NPI Registry data.
- What is Nicholas Gonsalves's NPI number?
- 1124553987. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Nicholas Gonsalves works
Medicare's Facility Affiliation Data lists Nicholas Gonsalves at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Alta Bates Summit Medical CenterOakland, CA · Acute Care Hospital · CCN 050043
Practice locations
Addresses where Nicholas Gonsalves is enrolled with Medicare (CMS data updated 2026-10-02).
- 27200 Calaroga AveHayward, CA 94545 (510) 264‑4000
- 3200 Kearney StFremont, CA 94538 (510) 490‑1222
- 350 Hawthorne AveOakland, CA 94609
- 350 Hawthorne Ave, Rm 2346Oakland, CA 94609 (510) 869‑6883
- 365 Hawthorne AveOakland, CA 94609
Group practices
Medicare enrollment lists Nicholas Gonsalves as a member of this group (CMS data updated 2026-10-02).
- Sutter Bay Medical Foundation3,829 clinicians in the group
Specialties
- General Surgeryprimary
Other general surgeons in Hayward
Clinicians with the same Medicare primary specialty in Hayward, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Illinois College Of Med (chi/peor/rock/chm-Urb) |
| Graduation year | 2016 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1124553987 |
| 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