Brenda Dennert, M.D.
NPI 1235127846ActiveIndividual· Internal Medicine, Gastroenterology· Phoenix, AZ
Internal Medicine, Gastroenterology (M.D.) in Phoenix, Arizona, trained at University of Southern California Keck School of Medicine (class of 1989). Their prescriptions cost Medicare Part D more than their services did: $120,329 for 601 claims, against $53,536 paid for services in 2024. Abbvie Inc. was the largest of 3 companies reporting payments in 2025, $65.89 in all, mostly food and beverage.
Overview
| NPI | 1235127846 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Oct 7, 2005 |
| Last updated in NPPES | Feb 16, 2017 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | 21159 | AZ |
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 (AZ) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 352 |
|---|---|
| Services billed | 572 across 23 procedure codes |
| Paid by Medicare | $53,536 |
Part D prescriptions in 2024
| Prescriptions (claims) | 601 · 1,137 30-day fills |
|---|---|
| Patients | 177 |
| Total drug cost | $120,329 |
| Generic share | 82% of claims |
Education and affiliations
| Medical school | University of Southern California Keck School of Medicine |
|---|---|
| Graduation year | 1989 |
| Medicare specialty | Gastroenterology |
| Telehealth | Offers telehealth |
Medical group
- Arizona Digestive Health PCSun City, AZ · 136 clinicians
Industry payments (Open Payments)
- 2025$65.89 · 4 payments from 3 companies
- 2024$120.75 · 5 payments from 5 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $31.61 | 2 |
| Janssen Biotech, Inc. | $17.56 | 1 |
| Ardelyx, Inc. | $16.72 | 1 |
What the 2025 payments were for
- Food and Beverage$65.89 · 4 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 100 gastroenterologists in Phoenix · All gastroenterologists in Arizona