Luis Thormer Chastain, MD
NPI 1467477661ActiveIndividual· Family Medicine· Georgetown, SC
Family Medicine (MD) in Georgetown, South Carolina, trained at Medical University of South Carolina College of Medicine (class of 2005). Their prescriptions cost Medicare Part D more than their services did: $1,327,816 for 16,040 claims, against $30,824 paid for services in 2024. Astellas Pharma US Inc was the largest of 4 companies reporting payments in 2025, $73.04 in all, mostly food and beverage.
Overview
| NPI | 1467477661 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jul 12, 2006 |
| Last updated in NPPES | Dec 3, 2025 |
| Certified by provider | Dec 3, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Family Medicine Primary | 207Q00000X | 28078 | SC |
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 - Emergency Medicine (SC) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 321 |
|---|---|
| Services billed | 2,006 across 31 procedure codes |
| Paid by Medicare | $30,824 |
Part D prescriptions in 2024
| Prescriptions (claims) | 16,040 · 35,143 30-day fills |
|---|---|
| Patients | 748 |
| Total drug cost | $1,327,816 |
| Generic share | 89% of claims |
Education and affiliations
| Medical school | Medical University of South Carolina College of Medicine |
|---|---|
| Graduation year | 2005 |
| Medicare specialty | Emergency Medicine |
| Secondary specialties | Family Practice |
| Telehealth | Offers telehealth |
Medical groups
- Georgetown Physician Associates, LLCMyrtle Beach, SC · 214 clinicians
- Georgetown Health GroupGeorgetown, SC · 7 clinicians
Hospital affiliations
- Musc Medical CenterCharleston, SC
- Tidelands Georgetown Memorial HospitalGeorgetown, SC
- Tidelands Waccamaw Community HospitalMurrells Inlet, SC
Other facilities
- Amedisys Home Health CareHome health agency · Kingstree, SC
- Amedisys Home Health of GeorgetownHome health agency · Georgetown, SC
- Centerwell Home HealthHome health agency · Myrtle Beach, SC
Industry payments (Open Payments)
- 2025$73.04 · 4 payments from 4 companies
- 2024$45.68 · 3 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Astellas Pharma US Inc | $22.73 | 1 |
| Novo Nordisk Inc | $18.98 | 1 |
| Pfizer Inc. | $17.10 | 1 |
| Abbvie Inc. | $14.23 | 1 |
What the 2025 payments were for
- Food and Beverage$73.04 · 4 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other family medicine physicians in Georgetown
- 1225699671
- 1285641175
- 1528644903
- 1578669297
- 1669455077
- 1811490907
- 1851323448
- 1912980822
- 1255844700
- 1649582032
- 1932839107
- 1063025682
All 28 family medicine physicians in Georgetown · All family medicine physicians in South Carolina