Joshua Brett Immergluck, MD
NPI 1043713845ActiveIndividual· Internal Medicine, Gastroenterology· Dallas, TX
Internal Medicine, Gastroenterology (MD) with University of Texas Southwestern Medical Center at Dallas, practicing in Dallas, Texas. Their prescriptions cost Medicare Part D more than their services did: $55,841 for 17 claims, against $8,347 paid for services in 2024. Madrigal Pharmaceuticals was the largest of 3 companies reporting payments in 2025, $323.45 in all, mostly food and beverage. Lists Parkland Health & Hospital System and 1 other hospital as hospital affiliations.
Overview
| NPI | 1043713845 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Mar 18, 2018 |
| Last updated in NPPES | Sep 3, 2024 |
| Certified by provider | Sep 3, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | V0435 | TX |
| Student in an Organized Health Care Education/Training Program | 390200000X | — | — |
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 - Gastroenterology (TX) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 55 |
|---|---|
| Services billed | 80 across 19 procedure codes |
| Paid by Medicare | $8,347 |
Part D prescriptions in 2024
| Prescriptions (claims) | 17 · 21 30-day fills |
|---|---|
| Patients | 12 |
| Total drug cost | $55,841 |
Education and affiliations
| Graduation year | 2018 |
|---|---|
| Medicare specialty | Gastroenterology |
Medical group
- University of Texas Southwestern Medical Center at DallasDallas, TX · 3,187 clinicians
Hospital affiliations
Industry payments (Open Payments)
- 2025$323.45 · 3 payments from 3 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Madrigal Pharmaceuticals | $148.86 | 1 |
| Mirum Pharmaceuticals, Inc. | $143.64 | 1 |
| Takeda Pharmaceuticals U.S.A., Inc. | $30.95 | 1 |
What the 2025 payments were for
- Food and Beverage$323.45 · 3 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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