Jennifer Lynn Knox Barleben, M.D.
NPI 1386896264ActiveIndividual· Internal Medicine· Newport Beach, CA
Internal Medicine (M.D.) in Newport Beach, California, trained at New York Medical College (class of 2004). Their prescriptions cost Medicare Part D more than their services did: $340,231 for 3,586 claims, against $92,199 paid for services in 2024. Amgen Inc. was the largest of 9 companies reporting payments in 2025, $346.23 in all, mostly food and beverage.
Overview
| NPI | 1386896264 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Oct 22, 2008 |
| Last updated in NPPES | Jan 9, 2020 |
| Certified by provider | Jan 9, 2020 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | A98912 | 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 | 281 |
|---|---|
| Services billed | 2,419 across 43 procedure codes |
| Paid by Medicare | $92,199 |
Part D prescriptions in 2024
| Prescriptions (claims) | 3,586 · 7,381 30-day fills |
|---|---|
| Patients | 295 |
| Total drug cost | $340,231 |
| Generic share | 86% of claims |
Education and affiliations
| Medical school | New York Medical College |
|---|---|
| Graduation year | 2004 |
| Medicare specialty | Internal Medicine |
Medical group
- Newport Beach Medical AssociatesNewport Beach, CA · 6 clinicians
Hospital affiliations
- Hoag Memorial Hospital PresbyterianNewport Beach, CA
- Memorialcare Orange Coast Medical CenterFountain Valley, CA
Other facilities
- Hoag Home HealthHome health agency · Newport Beach, CA
Industry payments (Open Payments)
- 2025$346.23 · 17 payments from 9 companies
- 2024$833.58 · 36 payments from 12 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Amgen Inc. | $95.89 | 5 |
| Novartis Pharmaceuticals Corporation | $72.55 | 3 |
| Novo Nordisk Inc | $43.34 | 2 |
| Sumitomo Pharma America, Inc. | $41.88 | 2 |
| Tanabe Pharma America, Inc. | $24.30 | 1 |
What the 2025 payments were for
- Food and Beverage$346.23 · 17 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 138 internal medicine physicians in Newport Beach · All internal medicine physicians in California