Jennifer R. Keiner, MD
NPI 1508863887ActiveIndividual· Internal Medicine· Huntington Beach, CA
Internal Medicine (MD) in Huntington Beach, California, trained at George Washington University School of Medicine (class of 1999). Their prescriptions cost Medicare Part D more than their services did: $67,506 for 1,173 claims, against $8,705 paid for services in 2024. Novo Nordisk Inc was the largest of 11 companies reporting payments in 2025, $384.63 in all, mostly food and beverage.
Overview
| NPI | 1508863887 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jul 1, 2005 |
| Last updated in NPPES | Jul 9, 2021 |
| Certified by provider | Jul 9, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | A73785 | 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 - Hospitalist (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 44 |
|---|---|
| Services billed | 134 across 22 procedure codes |
| Paid by Medicare | $8,705 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,173 · 2,672 30-day fills |
|---|---|
| Patients | 296 |
| Total drug cost | $67,506 |
| Generic share | 89% of claims |
Education and affiliations
| Medical school | George Washington University School of Medicine |
|---|---|
| Graduation year | 1999 |
| Medicare specialty | Hospitalist |
| Secondary specialties | Internal Medicine |
| Telehealth | Offers telehealth |
Hospital affiliation
- Hoag Memorial Hospital PresbyterianNewport Beach, CA
Industry payments (Open Payments)
- 2025$384.63 · 16 payments from 11 companies
- 2024$134.56 · 6 payments from 5 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Novo Nordisk Inc | $81.22 | 3 |
| Exact Sciences Corporation | $45.88 | 2 |
| Ascendis Pharma Endocrinology Inc | $45.19 | 2 |
| Amgen Inc. | $38.62 | 2 |
| Insulet Corporation | $35.05 | 1 |
What the 2025 payments were for
- Food and Beverage$384.63 · 16 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 71 internal medicine physicians in Huntington Beach · All internal medicine physicians in California