Isabelle Dirksen
NPI 1457011991ActiveIndividual· Physician Assistant· Lafayette, CO
Physician Assistant with Intermountain Medical Group Denver LLC, practicing in Lafayette, Colorado. 48 Medicare patients in 2024, $9,111 paid; nearly all of their 92 Part D prescriptions were generic (99%). Alphatec Spine, Inc was the largest of 3 companies reporting payments in 2025, $168.08 in all, mostly food and beverage. Lists Good Samaritan Medical Center LLC and 1 other hospital as hospital affiliations.
Overview
| NPI | 1457011991 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Sole proprietor | No |
| NPI issued | Dec 25, 2021 |
| Last updated in NPPES | Apr 17, 2023 |
| Certified by provider | Apr 17, 2023 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Physician Assistant Primary | 363A00000X | 0007779 | CO |
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 - Physician Assistant (CO) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 48 |
|---|---|
| Services billed | 115 across 35 procedure codes |
| Paid by Medicare | $9,111 |
Part D prescriptions in 2024
| Prescriptions (claims) | 92 · 94 30-day fills |
|---|---|
| Patients | 56 |
| Total drug cost | $808.75 |
| Generic share | 99% of claims |
Education and affiliations
| Graduation year | 2022 |
|---|---|
| Medicare specialty | Physician Assistant |
Medical group
- Intermountain Medical Group Denver LLCBroomfield, CO · 568 clinicians
Hospital affiliations
- Good Samaritan Medical Center LLCLafayette, CO
- Intermountain Health Platte Valley HospitalBrighton, CO
Industry payments (Open Payments)
- 2025$168.08 · 5 payments from 3 companies
- 2024$138.75 · 2 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Alphatec Spine, Inc | $127.89 | 3 |
| Si-Bone, Inc. | $22.68 | 1 |
| Medtronic, Inc. | $17.51 | 1 |
What the 2025 payments were for
- Food and Beverage$168.08 · 5 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 43 physician assistants in Lafayette · All physician assistants in Colorado