Quick answers
- Where does Arnold L. Knepfer see patients?
- Medicare's clinician data lists 1 practice location in Corte Madera, CA. Call before your visit to confirm the address.
- What is Arnold L. Knepfer's specialty?
- Medicare lists Psychiatry as the primary specialty.
- Does Arnold L. Knepfer accept Medicare assignment?
- Medicare's clinician data says Arnold L. Knepfer may accept Medicare assignment (as of 2026-10-02). Ask the office whether they accept it for your visit.
- What is the phone number for Arnold L. Knepfer?
- (415) 927-2320, as listed in official Medicare / NPI Registry data.
- What is Arnold L. Knepfer's NPI number?
- 1134117435. 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 Arnold L. Knepfer is enrolled with Medicare (CMS data updated 2026-10-02).
- 21 Tamal Vista Blvd, Suite 212Corte Madera, CA 94925 (415) 927‑2320
Specialties
- Psychiatryprimary
Other psychiatrists in California
Clinicians with the same Medicare primary specialty in California — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1958 |
| Gender (as listed) | Male |
| Medicare assignment | May accept for some services |
| NPI (National Provider Identifier) | 1134117435 |
| 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