Tanya Nanayakkara, M.D.
NPI 1255644100ActiveIndividual· Family Medicine· Corona, CA
Family Medicine (M.D.) with Citrus Valley Medical Associates Inc, practicing in Corona, California. Their prescriptions cost Medicare Part D more than their services did: $105,223 for 2,661 claims, against $63,835 paid for services in 2024. Sumitomo Pharma America, Inc. was the largest of 12 companies reporting payments in 2025, $465.60 in all, mostly food and beverage.
Overview
| NPI | 1255644100 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jul 21, 2010 |
| Last updated in NPPES | Sep 30, 2024 |
| Certified by provider | Sep 30, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Family Medicine Primary | 207Q00000X | C165533 | 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); Practitioner - Family Practice (NY) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 189 |
|---|---|
| Services billed | 954 across 40 procedure codes |
| Paid by Medicare | $63,835 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,661 · 6,217 30-day fills |
|---|---|
| Patients | 288 |
| Total drug cost | $105,223 |
| Generic share | 94% of claims |
Education and affiliations
| Graduation year | 2003 |
|---|---|
| Medicare specialty | Family Practice |
| Telehealth | Offers telehealth |
Medical group
- Citrus Valley Medical Associates IncCorona, CA · 14 clinicians
Industry payments (Open Payments)
- 2025$465.60 · 21 payments from 12 companies
- 2024$606.45 · 28 payments from 13 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Sumitomo Pharma America, Inc. | $86.31 | 5 |
| Amgen Inc. | $70.91 | 4 |
| Lilly USA, LLC | $40.70 | 2 |
| Inspire Medical Systems, Inc. | $37.33 | 1 |
| Astrazeneca Pharmaceuticals LP | $37.16 | 2 |
What the 2025 payments were for
- Food and Beverage$465.60 · 21 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 82 family medicine physicians in Corona · All family medicine physicians in California