Alexander Mamunes
NPI 1205368891ActiveIndividual· Internal Medicine, Gastroenterology· Columbia, MD
Internal Medicine, Gastroenterology in Columbia, Maryland, trained at University of Maryland School of Medicine (class of 2017). In 2024 Medicare paid $40,568 for 157 patients, and Part D covered 241 of their prescriptions, 67% of them generic. Abbvie Inc. was the largest of 16 companies reporting payments in 2025, $2,084 in all, mostly food and beverage.
Overview
| NPI | 1205368891 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Sole proprietor | No |
| NPI issued | Apr 1, 2017 |
| Last updated in NPPES | Jun 28, 2023 |
| Certified by provider | Jun 28, 2023 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | D0097475 | MD |
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 (DC); Practitioner - Gastroenterology (MD) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 157 |
|---|---|
| Services billed | 369 across 20 procedure codes |
| Paid by Medicare | $40,568 |
Part D prescriptions in 2024
| Prescriptions (claims) | 241 · 355 30-day fills |
|---|---|
| Patients | 109 |
| Total drug cost | $44,146 |
| Generic share | 67% of claims |
Education and affiliations
| Medical school | University of Maryland School of Medicine |
|---|---|
| Graduation year | 2017 |
| Medicare specialty | Gastroenterology |
| Secondary specialties | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- Gastro Center of Maryland LLCOlney, MD · 23 clinicians
Hospital affiliation
- University of MD Baltimore Washington Medical CenterGlen Burnie, MD
Industry payments (Open Payments)
- 2025$2,084 · 107 payments from 16 companies
- 2024$2,238 · 125 payments from 20 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $504.82 | 31 |
| Salix Pharmaceuticals, A Division of Bausch Health US, LLC | $231.14 | 13 |
| Janssen Biotech, Inc. | $218.24 | 7 |
| Pfizer Inc. | $176.85 | 12 |
| Genzyme Corporation | $166.26 | 8 |
What the 2025 payments were for
- Food and Beverage$1,985 · 106 payments
- Education$99.00 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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