Vasanthi L. Narayan, M.D.
NPI 1598939589ActiveIndividual· Internal Medicine, Endocrinology, Diabetes & Metabolism· Irvine, CA
Internal Medicine, Endocrinology, Diabetes & Metabolism (M.D.) in Irvine, California, trained at Yale University School of Medicine (class of 2002). Part D covered 1,252 prescriptions written in 2024, 66% of them generic. Corcept Therapeutics was the largest of 2 companies reporting payments in 2025, $93.66 in all, mostly food and beverage.
Overview
| NPI | 1598939589 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Apr 21, 2008 |
| Last updated in NPPES | Nov 22, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Endocrinology, Diabetes & Metabolism Primary | 207RE0101X | 93293 | 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) |
|---|
Part D prescriptions in 2024
| Prescriptions (claims) | 1,252 · 3,503 30-day fills |
|---|---|
| Patients | 307 |
| Total drug cost | $257,651 |
| Generic share | 66% of claims |
Education and affiliations
| Medical school | Yale University School of Medicine |
|---|---|
| Graduation year | 2002 |
| Medicare specialty | Internal Medicine |
| Secondary specialties | Endocrinology |
Medical group
- Southern California Permanente Medical GroupRedlands, CA · 11,293 clinicians
Industry payments (Open Payments)
- 2025$93.66 · 3 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Corcept Therapeutics | $59.16 | 1 |
| Beta Bionics, Inc. | $34.50 | 2 |
What the 2025 payments were for
- Food and Beverage$93.66 · 3 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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