Brendan Michael De Marco, MD
NPI 1083632459ActiveIndividual· Internal Medicine, Infectious Disease· Saint Louis, MO
Internal Medicine, Infectious Disease (MD) in Saint Louis, Missouri, trained at University of Texas Medical School at Houston (class of 2003). Their prescriptions cost Medicare Part D more than their services did: $988,373 for 1,392 claims, against $19,522 paid for services in 2024. Gilead Sciences, Inc. was the largest of 2 companies reporting payments in 2025, $80.40 in all, mostly food and beverage.
Overview
| NPI | 1083632459 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jul 17, 2006 |
| Last updated in NPPES | Apr 9, 2025 |
| Certified by provider | Apr 9, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Infectious Disease Primary | 207RI0200X | 2023015024 | MO |
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 - Infectious Disease (MO); Practitioner - Infectious Disease (NM); Practitioner - Internal Medicine (SC); Practitioner - Infectious Disease (TN); Practitioner - Infectious Disease (TX) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 98 |
|---|---|
| Services billed | 226 across 18 procedure codes |
| Paid by Medicare | $19,522 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,392 · 1,646 30-day fills |
|---|---|
| Patients | 94 |
| Total drug cost | $988,373 |
| Generic share | 71% of claims |
Education and affiliations
| Medical school | University of Texas Medical School at Houston |
|---|---|
| Graduation year | 2003 |
| Medicare specialty | Infectious Disease |
| Telehealth | Offers telehealth |
Medical groups
- Ssm Health Care GroupSaint Louis, MO · 940 clinicians
- Access Telecare PLLCMountain Brk, AL · 413 clinicians
- Vivent Health IncKenosha, WI · 53 clinicians
Hospital affiliation
- Ssm Health Saint Louis University HospitalSaint Louis, MO
Industry payments (Open Payments)
- 2025$80.40 · 4 payments from 2 companies
- 2024$41.84 · 2 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Gilead Sciences, Inc. | $44.58 | 2 |
| Viiv Healthcare Company | $35.82 | 2 |
What the 2025 payments were for
- Food and Beverage$80.40 · 4 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 123 infectious disease specialists in Saint Louis · All infectious disease specialists in Missouri