Theresa Carla Negrido Johnson, PMHNP
NPI 1255600581ActiveIndividual· Nurse Practitioner, Psych/Mental Health· Santa Rosa, CA
Nurse Practitioner, Psych/Mental Health (PMHNP) with Siyan Clinical Corporation, practicing in Santa Rosa, California. Their prescriptions cost Medicare Part D more than their services did: $247,971 for 835 claims, against $43,204 paid for services in 2024. Axsome Therapeutics, Inc. was the largest of 5 companies reporting payments in 2025, $913.92 in all, mostly food and beverage.
Overview
| NPI | 1255600581 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | PMHNP |
| Sole proprietor | No |
| NPI issued | Dec 15, 2011 |
| Last updated in NPPES | Jul 16, 2025 |
| Certified by provider | Jul 16, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Nurse Practitioner, Psych/Mental Health Primary | 363LP0808X | 95004522 | CA |
| Registered Nurse, Neuroscience | 163WN0800X | 685968 | FL |
| Nurse Practitioner, Family | 363LF0000X | 95004522 | CA |
| Clinical Nurse Specialist, Critical Care Medicine | 364SC0200X | 3636 | 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 - Nurse Practitioner (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 59 |
|---|---|
| Services billed | 605 across 9 procedure codes |
| Paid by Medicare | $43,204 |
Part D prescriptions in 2024
| Prescriptions (claims) | 835 · 1,726 30-day fills |
|---|---|
| Patients | 95 |
| Total drug cost | $247,971 |
| Generic share | 95% of claims |
Education and affiliations
| Graduation year | 2016 |
|---|---|
| Medicare specialty | Nurse Practitioner |
Medical group
- Siyan Clinical CorporationSanta Rosa, CA · 20 clinicians
Industry payments (Open Payments)
- 2025$913.92 · 12 payments from 5 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Axsome Therapeutics, Inc. | $332.66 | 4 |
| Alkermes, Inc. | $248.90 | 2 |
| Iti, Inc. (D/B/A Intra-Cellular Therapies, Inc.) | $242.67 | 2 |
| Abbvie Inc. | $48.07 | 2 |
| Bausch Health US, LLC | $41.62 | 2 |
What the 2025 payments were for
- Food and Beverage$913.92 · 12 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 36 psychiatric nurse practitioners in Santa Rosa · All psychiatric nurse practitioners in California