Jayanth K.R. Madderla, MD
NPI 1699930099ActiveIndividual· Psychiatry & Neurology, Psychiatry· Napa, CA
Psychiatry & Neurology, Psychiatry (MD) with Northbay Physicians Surgery Center, LLC and 2 other groups, practicing in Napa, California. Mostly services rather than prescriptions: Medicare paid $12,314 for 105 patients in 2024, with only 29 Part D claims. Octapharma USA, Inc. reported $17.52 in payments in 2025, mostly food and beverage. Lists Northbay Medical Center and 2 other hospitals as hospital affiliations.
Overview
| NPI | 1699930099 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jul 24, 2008 |
| Last updated in NPPES | Nov 9, 2017 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Psychiatry & Neurology, Psychiatry Primary | 2084P0800X | 115344 | 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 - Internal Medicine (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 105 |
|---|---|
| Services billed | 184 across 8 procedure codes |
| Paid by Medicare | $12,314 |
Part D prescriptions in 2024
| Prescriptions (claims) | 29 · 30 30-day fills |
|---|---|
| Patients | 13 |
| Total drug cost | $923.96 |
| Generic share | 93% of claims |
Education and affiliations
| Graduation year | 2003 |
|---|---|
| Medicare specialty | Internal Medicine |
Medical groups
- Northbay Physicians Surgery Center, LLCFairfield, CA · 324 clinicians
- Department of State HospitalsNapa, CA · 270 clinicians
- Hospitalist Medicine Physicians of California IncOceanside, CA · 123 clinicians
Hospital affiliations
- Northbay Medical CenterFairfield, CA
- Providence Queen of the Valley Medical CenterNapa, CA
- Washington HospitalFremont, CA
Industry payments (Open Payments)
- 2025$17.52 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Octapharma USA, Inc. | $17.52 | 1 |
What the 2025 payments were for
- Food and Beverage$17.52 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 102 psychiatrists in Napa · All psychiatrists in California