Quick answers
- Which hospitals does Nelson E. Castro Capera work at?
- Medicare's official clinician data lists Nelson E. Castro Capera at 1 hospital: Kaiser Foundation Hospital - Walnut Creek. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Nelson E. Castro Capera see patients?
- Medicare's clinician data lists 1 practice location in Walnut Creek, CA. Call before your visit to confirm the address.
- What is Nelson E. Castro Capera's specialty?
- Medicare lists Internal Medicine as the primary specialty.
- Does Nelson E. Castro Capera accept Medicare assignment?
- Yes. Medicare's clinician data says Nelson E. Castro Capera 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 Nelson E. Castro Capera's NPI number?
- 1265874119. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Nelson E. Castro Capera works
Medicare's Facility Affiliation Data lists Nelson E. Castro Capera at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Kaiser Foundation Hospital - Walnut CreekWalnut Creek, CA · Acute Care Hospital · CCN 050072
Practice locations
Addresses where Nelson E. Castro Capera is enrolled with Medicare (CMS data updated 2026-10-02).
- 320 Lennon LnWalnut Creek, CA 94598
Group practices
Medicare enrollment lists Nelson E. Castro Capera as a member of this group (CMS data updated 2026-10-02).
- Permanente Medical Group Inc10,996 clinicians in the group
Specialties
- Internal Medicineprimary
Other internal medicine doctors in Walnut Creek
Clinicians with the same Medicare primary specialty in Walnut Creek, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1995 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1265874119 |
| 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