Quick answers
- Which hospitals does Andrew Nimmich work at?
- Medicare's official clinician data lists Andrew Nimmich at 1 hospital: Providence Queen of the Valley Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Andrew Nimmich see patients?
- Medicare's clinician data lists 1 practice location in Napa, CA. Call before your visit to confirm the address.
- What is Andrew Nimmich's specialty?
- Medicare lists Vascular Surgery as the primary specialty.
- Does Andrew Nimmich accept Medicare assignment?
- Yes. Medicare's clinician data says Andrew Nimmich 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 Andrew Nimmich offer telehealth?
- Medicare's clinician data says Andrew Nimmich offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Andrew Nimmich?
- (925) 932-6330, as listed in official Medicare / NPI Registry data.
- What is Andrew Nimmich's NPI number?
- 1396238945. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Andrew Nimmich works
Medicare's Facility Affiliation Data lists Andrew Nimmich at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Providence Queen of the Valley Medical CenterNapa, CA · Acute Care Hospital · CCN 050009
Practice locations
Addresses where Andrew Nimmich is enrolled with Medicare (CMS data updated 2026-10-02).
- 4 Financial PlzNapa, CA 94558 (925) 932‑6330
Group practices
Medicare enrollment lists Andrew Nimmich as a member of this group (CMS data updated 2026-10-02).
- Bass Medical Group291 clinicians in the group
Specialties
- Vascular Surgeryprimary
Other vascular surgeons in California
Clinicians with the same Medicare primary specialty in California — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Boston University School Of Medicine |
| Graduation year | 2018 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1396238945 |
| 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