Marie Pasion David, MD
NPI 1831202233ActiveIndividual· General Practice· Merced, CA
General Practice (MD) with Timothy S Johnston MD PC, practicing in Merced, California. Their prescriptions cost Medicare Part D more than their services did: $54,566 for 705 claims, against $6,681 paid for services in 2024. Axsome Therapeutics, Inc. reported $22.18 in payments in 2025, mostly food and beverage. Lists Mercy Medical Center as a hospital affiliation.
Overview
| NPI | 1831202233 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | Yes |
| NPI issued | Aug 17, 2006 |
| Last updated in NPPES | Jun 10, 2024 |
| Certified by provider | Jun 10, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| General Practice Primary | 208D00000X | A77541 | 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 - Family Practice (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 47 |
|---|---|
| Services billed | 119 across 14 procedure codes |
| Paid by Medicare | $6,681 |
Part D prescriptions in 2024
| Prescriptions (claims) | 705 · 1,868 30-day fills |
|---|---|
| Patients | 129 |
| Total drug cost | $54,566 |
| Generic share | 90% of claims |
Education and affiliations
| Graduation year | 1999 |
|---|---|
| Medicare specialty | Family Practice |
| Telehealth | Offers telehealth |
Medical group
- Timothy S Johnston MD PCMerced, CA · 8 clinicians
Hospital affiliation
- Mercy Medical CenterMerced, CA
Industry payments (Open Payments)
- 2025$22.18 · 1 payment from 1 company
- 2024$219.65 · 8 payments from 3 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Axsome Therapeutics, Inc. | $22.18 | 1 |
What the 2025 payments were for
- Food and Beverage$22.18 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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