Arnold Knepfer, M.D.
NPI 1134117435ActiveIndividual· Psychiatry & Neurology, Psychiatry· Corte Madera, CA
Psychiatry & Neurology, Psychiatry (M.D.) in Corte Madera, California, licensed in CA, with an NPI issued in October 2005. 44 Medicare patients in 2024, $39,463 paid; all of their 599 Part D prescriptions were generic.
Overview
| NPI | 1134117435 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | Yes |
| NPI issued | Oct 11, 2005 |
| Last updated in NPPES | Feb 15, 2011 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Psychiatry & Neurology, Psychiatry Primary | 2084P0800X | G5489 | CA |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Psychiatry (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 44 |
|---|---|
| Services billed | 375 across 9 procedure codes |
| Paid by Medicare | $39,463 |
Part D prescriptions in 2024
| Prescriptions (claims) | 599 · 789 30-day fills |
|---|---|
| Patients | 39 |
| Total drug cost | $16,583 |
| Generic share | 100% of claims |
Education and affiliations
| Graduation year | 1958 |
|---|---|
| Medicare specialty | Psychiatry |
Industry payments (Open Payments)
None reported for 2025 or 2024.
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 19 psychiatrists in Corte Madera · All psychiatrists in California