Montserrat S. Del Olmo, MD
NPI 1295223568ActiveIndividual· Family Medicine· Hartsville, SC
Family Medicine (MD) with Gundersen Clinic Ltd and 1 other group, practicing in Hartsville, South Carolina. Their prescriptions cost Medicare Part D more than their services did: $107,312 for 1,135 claims, against $34,599 paid for services in 2024. Bayer Healthcare Pharmaceuticals Inc. was the largest of 2 companies reporting payments in 2025, $29.06 in all, mostly food and beverage. Lists Carolina Pines Regional Medical Center and 2 other hospitals as hospital affiliations.
Overview
| NPI | 1295223568 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Apr 23, 2018 |
| Last updated in NPPES | Oct 5, 2026 |
| Certified by provider | Oct 5, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Family Medicine Primary | 207Q00000X | 70999 | WI |
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 - Family Practice (SC); Practitioner - Family Practice (WI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 189 |
|---|---|
| Services billed | 1,730 across 65 procedure codes |
| Paid by Medicare | $34,599 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,135 · 2,426 30-day fills |
|---|---|
| Patients | 109 |
| Total drug cost | $107,312 |
| Generic share | 85% of claims |
Education and affiliations
| Graduation year | 2016 |
|---|---|
| Medicare specialty | Family Practice |
Medical groups
- Gundersen Clinic LtdOnalaska, WI · 418 clinicians
- Hartsville Medical Group LLCHartsville, SC · 80 clinicians
Hospital affiliations
- Carolina Pines Regional Medical CenterHartsville, SC
- Gundersen Lutheran Medical CenterLa Crosse, WI
- McLeod Regional Medical Center-Pee DeeFlorence, SC
Industry payments (Open Payments)
- 2025$29.06 · 3 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Bayer Healthcare Pharmaceuticals Inc. | $18.30 | 1 |
| Phathom Pharmaceuticals, Inc. | $10.76 | 2 |
What the 2025 payments were for
- Food and Beverage$29.06 · 3 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 29 family medicine physicians in Hartsville · All family medicine physicians in South Carolina