Vivian Ussui, MD
NPI 1124479837ActiveIndividual· Internal Medicine, Gastroenterology· Denver, CO
Internal Medicine, Gastroenterology (MD) with Catholic Health Initiatives Colorado, practicing in Denver, Colorado. Their prescriptions cost Medicare Part D more than their services did: $73,791 for 431 claims, against $41,228 paid for services in 2024. Abbvie Inc. was the largest of 6 companies reporting payments in 2025, $648.99 in all, mostly food and beverage. Lists Longmont United Hospital and 1 other hospital as hospital affiliations.
Overview
| NPI | 1124479837 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | Yes |
| NPI issued | Jun 23, 2016 |
| Last updated in NPPES | May 9, 2025 |
| Certified by provider | May 9, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | DR.0066049 | CO |
| Internal Medicine | 207R00000X | TRN21927 | FL |
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 (CO) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 160 |
|---|---|
| Services billed | 404 across 21 procedure codes |
| Paid by Medicare | $41,228 |
Part D prescriptions in 2024
| Prescriptions (claims) | 431 · 682 30-day fills |
|---|---|
| Patients | 113 |
| Total drug cost | $73,791 |
| Generic share | 85% of claims |
Education and affiliations
| Graduation year | 2001 |
|---|---|
| Medicare specialty | Gastroenterology |
| Telehealth | Offers telehealth |
Medical group
- Catholic Health Initiatives ColoradoLakewood, CO · 1,225 clinicians
Hospital affiliations
- Longmont United HospitalLongmont, CO
- St Elizabeth HospitalFort Morgan, CO
Industry payments (Open Payments)
- 2025$648.99 · 10 payments from 6 companies
- 2024$474.39 · 5 payments from 3 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $279.26 | 3 |
| Intuitive Surgical, Inc. | $129.88 | 1 |
| Phathom Pharmaceuticals, Inc. | $124.67 | 1 |
| Regeneron Healthcare Solutions, Inc. | $46.50 | 2 |
| Janssen Biotech, Inc. | $45.74 | 2 |
What the 2025 payments were for
- Food and Beverage$648.99 · 10 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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