Quick answers
- Where does Nicholas B. Kammerer see patients?
- Medicare's clinician data lists 1 practice location in Napa, CA. Call before your visit to confirm the address.
- What is Nicholas B. Kammerer's specialty?
- Medicare lists Psychiatry as the primary specialty.
- Does Nicholas B. Kammerer accept Medicare assignment?
- Yes. Medicare's clinician data says Nicholas B. Kammerer 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 B. Kammerer?
- (916) 651-8811, as listed in official Medicare / NPI Registry data.
- What is Nicholas B. Kammerer's NPI number?
- 1609945161. 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 Nicholas B. Kammerer is enrolled with Medicare (CMS data updated 2026-10-02).
- 2100 Napa Vallejo HwyNapa, CA 94558 (916) 651‑8811
Group practices
Medicare enrollment lists Nicholas B. Kammerer as a member of this group (CMS data updated 2026-10-02).
- Department of State Hospitals270 clinicians in the group
Specialties
- Psychiatryprimary
Other psychiatrists in Napa
Clinicians with the same Medicare primary specialty in Napa, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Nebraska College Of Medicine |
| Graduation year | 2003 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1609945161 |
| 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