Karen Theresia Marcus, M.D.
NPI 1003043993ActiveIndividual· Psychiatry & Neurology, Psychiatry· Pittsburg, CA
Psychiatry & Neurology, Psychiatry (M.D.) in Pittsburg, California, trained at University of California, San Diego School of Medicine (class of 2007). 100 Medicare patients in 2024, $69,987 paid; nearly all of their 240 Part D prescriptions were generic (94%).
Overview
| NPI | 1003043993 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jun 17, 2009 |
| Last updated in NPPES | Mar 20, 2012 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Psychiatry & Neurology, Psychiatry Primary | 2084P0800X | A108365 | CA |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 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 | 100 |
|---|---|
| Services billed | 871 across 10 procedure codes |
| Paid by Medicare | $69,987 |
Part D prescriptions in 2024
| Prescriptions (claims) | 240 · 248 30-day fills |
|---|---|
| Patients | 55 |
| Total drug cost | $12,818 |
| Generic share | 94% of claims |
Education and affiliations
| Medical school | University of California, San Diego School of Medicine |
|---|---|
| Graduation year | 2007 |
| Medicare specialty | Psychiatry |
Medical group
- Bay Psychiatric AssociatesBerkeley, CA · 60 clinicians
Hospital affiliation
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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