Janna Oganessian, M.D.
NPI 1801820832ActiveIndividual· Internal Medicine· Tarzana, CA
Internal Medicine (M.D.) in Tarzana, California, licensed in CA, with an NPI issued in July 2006. Their prescriptions cost Medicare Part D more than their services did: $1,172,778 for 13,157 claims, against $259,647 paid for services in 2024. Astrazeneca Pharmaceuticals LP was the largest of 8 companies reporting payments in 2025, $493.81 in all, mostly food and beverage.
Overview
| NPI | 1801820832 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jul 10, 2006 |
| Last updated in NPPES | Jul 8, 2007 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | A79854 | 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 | 242 |
|---|---|
| Services billed | 3,891 across 22 procedure codes |
| Paid by Medicare | $259,647 |
Part D prescriptions in 2024
| Prescriptions (claims) | 13,157 · 16,418 30-day fills |
|---|---|
| Patients | 284 |
| Total drug cost | $1,172,778 |
| Generic share | 84% of claims |
Education and affiliations
| Graduation year | 1974 |
|---|---|
| Medicare specialty | Internal Medicine |
Other facilities
- Hillside Home Health, IncHome health agency · Woodland Hills, CA
- Planet Home Health Care, IncHome health agency · Glendale, CA
Industry payments (Open Payments)
- 2025$493.81 · 19 payments from 8 companies
- 2024$761.13 · 25 payments from 9 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Astrazeneca Pharmaceuticals LP | $170.05 | 6 |
| Bayer Healthcare Pharmaceuticals Inc. | $138.30 | 5 |
| Boehringer Ingelheim Pharmaceuticals, Inc. | $74.42 | 3 |
| Abbvie Inc. | $26.17 | 1 |
| Glaxosmithkline, LLC. | $24.03 | 1 |
What the 2025 payments were for
- Food and Beverage$493.81 · 19 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 76 internal medicine physicians in Tarzana · All internal medicine physicians in California