Liam Gerhardt Clark, MD
NPI 1871090837ActiveIndividual· Psychiatry & Neurology, Neurology· Cheyenne, WY
Psychiatry & Neurology, Neurology (MD) in Cheyenne, Wyoming, trained at University of Washington School of Medicine (class of 2018). Their prescriptions cost Medicare Part D more than their services did: $171,623 for 1,102 claims, against $54,194 paid for services in 2024. Abbvie Inc. was the largest of 7 companies reporting payments in 2025, $368.73 in all, mostly food and beverage.
Overview
| NPI | 1871090837 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Apr 6, 2018 |
| Last updated in NPPES | Jan 20, 2026 |
| Certified by provider | Jan 20, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Psychiatry & Neurology, Neurology Primary | 2084N0400X | 15685A | WY |
| Psychiatry & Neurology, Neurology | 2084N0400X | 11441506-1205 | UT |
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 - Neurology (WY) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 252 |
|---|---|
| Services billed | 1,853 across 21 procedure codes |
| Paid by Medicare | $54,194 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,102 · 1,516 30-day fills |
|---|---|
| Patients | 181 |
| Total drug cost | $171,623 |
| Generic share | 88% of claims |
Education and affiliations
| Medical school | University of Washington School of Medicine |
|---|---|
| Graduation year | 2018 |
| Medicare specialty | Neurology |
| Telehealth | Offers telehealth |
Medical group
- Cheyenne Regional Physicians Group LLCCheyenne, WY · 103 clinicians
Hospital affiliation
- Cheyenne Regional Medical CenterCheyenne, WY
Industry payments (Open Payments)
- 2025$368.73 · 18 payments from 7 companies
- 2024$155.72 · 6 payments from 3 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $172.46 | 11 |
| Ucb, Inc. | $80.22 | 2 |
| Argenx US, Inc. | $42.92 | 1 |
| Merck Sharp & Dohme LLC | $23.24 | 1 |
| Astrazeneca Pharmaceuticals LP | $19.87 | 1 |
What the 2025 payments were for
- Food and Beverage$368.73 · 18 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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