Dennis Michael Marien, PA
NPI 1710029079ActiveIndividual· Physician Assistant· Grand Blanc, MI
Physician Assistant (PA) with Cognosis Health Hillside, practicing in Grand Blanc, Michigan. Their prescriptions cost Medicare Part D more than their services did: $51,970 for 1,403 claims, against $6,231 paid for services in 2024. E.R. Squibb & Sons, L.L.C. was the largest of 7 companies reporting payments in 2025, $385.01 in all, mostly food and beverage.
Overview
| NPI | 1710029079 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | PA |
| Sole proprietor | No |
| NPI issued | Feb 13, 2007 |
| Last updated in NPPES | Jul 2, 2024 |
| Certified by provider | Jul 2, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Physician Assistant Primary | 363A00000X | 5601004895 | MI |
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 - Physician Assistant (MI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 50 |
|---|---|
| Services billed | 121 across 5 procedure codes |
| Paid by Medicare | $6,231 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,403 · 2,913 30-day fills |
|---|---|
| Patients | 206 |
| Total drug cost | $51,970 |
| Generic share | 99% of claims |
Education and affiliations
| Graduation year | 2006 |
|---|---|
| Medicare specialty | Physician Assistant |
| Telehealth | Offers telehealth |
Medical group
- Cognosis Health HillsideGrand Blanc, MI · 15 clinicians
Industry payments (Open Payments)
- 2025$385.01 · 12 payments from 7 companies
- 2024$379.44 · 18 payments from 10 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| E.R. Squibb & Sons, L.L.C. | $161.49 | 3 |
| Vanda Pharmaceuticals Inc. | $60.26 | 2 |
| Axsome Therapeutics, Inc. | $52.21 | 2 |
| Neurocrine Biosciences, Inc. | $38.53 | 2 |
| Otsuka America Pharmaceutical, Inc. | $29.10 | 1 |
What the 2025 payments were for
- Food and Beverage$385.01 · 12 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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