Calin S. Arimie, MD
NPI 1831277847ActiveIndividual· Internal Medicine, Gastroenterology· West Hills, CA
Internal Medicine, Gastroenterology (MD) with Genesis Healthcare Partners PC, practicing in West Hills, California. In 2024 Medicare paid $144,651 for 444 patients, and Part D covered 891 of their prescriptions, 82% of them generic. Ardelyx, Inc. was the largest of 8 companies reporting payments in 2025, $1,327 in all, mostly food and beverage. Lists Northridge Hospital Medical Center and 1 other hospital as hospital affiliations.
Overview
| NPI | 1831277847 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Nov 1, 2006 |
| Last updated in NPPES | Jan 17, 2017 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | A63334 | CA |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Gastroenterology (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 444 |
|---|---|
| Services billed | 1,783 across 54 procedure codes |
| Paid by Medicare | $144,651 |
Part D prescriptions in 2024
| Prescriptions (claims) | 891 · 1,462 30-day fills |
|---|---|
| Patients | 304 |
| Total drug cost | $176,968 |
| Generic share | 82% of claims |
Education and affiliations
| Graduation year | 1990 |
|---|---|
| Medicare specialty | Gastroenterology |
| Telehealth | Offers telehealth |
Medical group
- Genesis Healthcare Partners PCSan Francisco, CA · 228 clinicians
Hospital affiliations
- Northridge Hospital Medical CenterNorthridge, CA
- UCLA West Valley Medical CenterWest Hills, CA
Industry payments (Open Payments)
- 2025$1,327 · 39 payments from 8 companies
- 2024$1,107 · 34 payments from 7 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Ardelyx, Inc. | $458.12 | 12 |
| Madrigal Pharmaceuticals | $246.56 | 4 |
| Abbvie Inc. | $189.81 | 14 |
| Janssen Biotech, Inc. | $180.84 | 4 |
| Phathom Pharmaceuticals, Inc. | $149.99 | 1 |
What the 2025 payments were for
- Food and Beverage$1,327 · 39 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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