Guy Christopher Charest, DO
NPI 1770102600ActiveIndividual· Dermatology· Flower Mound, TX
Dermatology (DO) with Dr Michael McGuiness PA, practicing in Flower Mound, Texas. 129 Medicare patients in 2024, $26,857 paid; nearly all of their 121 Part D prescriptions were generic (98%). Janssen Biotech, Inc. was the largest of 26 companies reporting payments in 2025, $5,291 in all, mostly food and beverage.
Overview
| NPI | 1770102600 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | DO |
| Sole proprietor | No |
| NPI issued | Apr 10, 2020 |
| Last updated in NPPES | May 16, 2024 |
| Certified by provider | May 16, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Dermatology Primary | 207N00000X | U9868 | TX |
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 - Dermatology (TX) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 129 |
|---|---|
| Services billed | 500 across 25 procedure codes |
| Paid by Medicare | $26,857 |
Part D prescriptions in 2024
| Prescriptions (claims) | 121 · 134 30-day fills |
|---|---|
| Patients | 76 |
| Total drug cost | $4,059 |
| Generic share | 98% of claims |
Education and affiliations
| Graduation year | 2020 |
|---|---|
| Medicare specialty | Dermatology |
Medical group
- Dr Michael McGuiness PAMurphy, TX · 15 clinicians
Industry payments (Open Payments)
- 2025$5,291 · 197 payments from 26 companies
- 2024$1,727 · 56 payments from 15 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Janssen Biotech, Inc. | $1,898 | 21 |
| Incyte Corporation | $424.19 | 15 |
| Arcutis Biotherapeutics, Inc. | $388.51 | 23 |
| Regeneron Healthcare Solutions, Inc. | $317.09 | 10 |
| Genzyme Corporation | $266.74 | 10 |
What the 2025 payments were for
- Food and Beverage$3,708 · 193 payments
- Consulting Fee$1,375 · 1 payment
- Education$207.99 · 3 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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