Karyn Collingwood Markley, MD
NPI 1184728420ActiveIndividual· Obstetrics & Gynecology· Myrtle Beach, SC
Obstetrics & Gynecology (MD) with McLeod Physician Associates II, practicing in Myrtle Beach, South Carolina. Their prescriptions cost Medicare Part D more than their services did: $30,855 for 240 claims, against $17,333 paid for services in 2024. Astellas Pharma US Inc was the largest of 8 companies reporting payments in 2025, $412.24 in all, mostly food and beverage. Lists Grand Strand Regional Medical Center and 1 other hospital as hospital affiliations.
Overview
| NPI | 1184728420 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Sep 8, 2006 |
| Last updated in NPPES | Jan 12, 2011 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Obstetrics & Gynecology Primary | 207V00000X | 20428 | SC |
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 - Obstetrics/Gynecology (SC) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 124 |
|---|---|
| Services billed | 302 across 18 procedure codes |
| Paid by Medicare | $17,333 |
Part D prescriptions in 2024
| Prescriptions (claims) | 240 · 491 30-day fills |
|---|---|
| Patients | 89 |
| Total drug cost | $30,855 |
| Generic share | 86% of claims |
Education and affiliations
| Graduation year | 1994 |
|---|---|
| Medicare specialty | Obstetrics/Gynecology |
Medical group
- McLeod Physician Associates IILittle River, SC · 550 clinicians
Hospital affiliations
- Grand Strand Regional Medical CenterMyrtle Beach, SC
- McLeod Loris HospitalLoris, SC
Industry payments (Open Payments)
- 2025$412.24 · 19 payments from 8 companies
- 2024$294.55 · 10 payments from 6 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Astellas Pharma US Inc | $107.16 | 4 |
| Hologic Sales and Service, LLC | $89.21 | 3 |
| Mayne Pharma Commercial LLC | $67.89 | 5 |
| Sumitomo Pharma America, Inc. | $54.72 | 2 |
| Organon LLC | $31.22 | 2 |
What the 2025 payments were for
- Food and Beverage$412.24 · 19 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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