Christopher M. Marks, PA-C
NPI 1831661859ActiveIndividual· Physician Assistant· Stamford, CT
Physician Assistant (PA-C) with Stamford Health Medical Group Inc, practicing in Stamford, Connecticut. Their prescriptions cost Medicare Part D more than their services did: $25,494 for 69 claims, against $5,695 paid for services in 2024. Lists Stamford Hospital as a hospital affiliation.
Overview
| NPI | 1831661859 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | PA-C |
| Sole proprietor | No |
| NPI issued | Jan 2, 2019 |
| Last updated in NPPES | Jan 4, 2019 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Physician Assistant Primary | 363A00000X | — | — |
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 (CT) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 71 |
|---|---|
| Services billed | 78 across 18 procedure codes |
| Paid by Medicare | $5,695 |
Part D prescriptions in 2024
| Prescriptions (claims) | 69 · 76 30-day fills |
|---|---|
| Patients | 38 |
| Total drug cost | $25,494 |
| Generic share | 61% of claims |
Education and affiliations
| Graduation year | 2018 |
|---|---|
| Medicare specialty | Physician Assistant |
Medical group
- Stamford Health Medical Group IncStamford, CT · 444 clinicians
Hospital affiliation
- Stamford HospitalStamford, CT
Industry payments (Open Payments)
None reported for 2025 or 2024.
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 81 physician assistants in Stamford · All physician assistants in Connecticut