Zsuzsanna Hortobagyi McMahan, MD, MHS
NPI 1518178516ActiveIndividual· Internal Medicine, Rheumatology· Houston, TX
Internal Medicine, Rheumatology (MD, MHS) in Houston, Texas, trained at University of Texas Medical School at Houston (class of 2006). Their prescriptions cost Medicare Part D more than their services did: $85,702 for 140 claims, against $6,166 paid for services in 2024. Boehringer Ingelheim International Gmbh was the largest of 8 companies reporting payments in 2025, $16,877 in all, mostly consulting fees.
Overview
| NPI | 1518178516 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD, MHS |
| Sole proprietor | No |
| NPI issued | May 24, 2007 |
| Last updated in NPPES | Aug 14, 2023 |
| Certified by provider | Jul 12, 2023 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Rheumatology Primary | 207RR0500X | N0263 | TX |
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 - Rheumatology (TX) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 25 |
|---|---|
| Services billed | 60 across 12 procedure codes |
| Paid by Medicare | $6,166 |
Part D prescriptions in 2024
| Prescriptions (claims) | 140 · 265 30-day fills |
|---|---|
| Patients | 40 |
| Total drug cost | $85,702 |
| Generic share | 86% of claims |
Education and affiliations
| Medical school | University of Texas Medical School at Houston |
|---|---|
| Graduation year | 2006 |
| Medicare specialty | Rheumatology |
| Secondary specialties | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- Ut PhysiciansHouston, TX · 1,765 clinicians
Hospital affiliations
- Memorial Hermann - Texas Medical CenterHouston, TX
- Memorial Hermann Hospital SystemHouston, TX
Industry payments (Open Payments)
- 2025$16,877 · 25 payments from 8 companies
- 2024$1,660 · 8 payments from 4 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Boehringer Ingelheim International Gmbh | $9,674 | 7 |
| Boehringer Ingelheim Pharma Gmbh & Co.Kg | $2,784 | 1 |
| Boehringer Ingelheim Pharmaceuticals, Inc. | $2,766 | 5 |
| Abbvie Inc. | $704.88 | 7 |
| Vertex Pharmaceuticals Incorporated | $427.50 | 1 |
What the 2025 payments were for
- Consulting Fee$15,558 · 9 payments
- Travel and Lodging$804.74 · 4 payments
- Food and Beverage$513.46 · 12 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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