Ariana Greenwood, MD
NPI 1548307804ActiveIndividual· Internal Medicine, Gastroenterology· Aurora, CO
Internal Medicine, Gastroenterology (MD) in Aurora, Colorado, trained at University of Vermont College of Medicine (class of 2006). Their prescriptions cost Medicare Part D more than their services did: $665,403 for 648 claims, against $33,718 paid for services in 2024. Abbvie Inc. was the largest of 16 companies reporting payments in 2025, $1,595 in all, mostly food and beverage.
Overview
| NPI | 1548307804 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jan 30, 2007 |
| Last updated in NPPES | Apr 30, 2012 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | 47026 | CO |
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 | 180 |
|---|---|
| Services billed | 280 across 23 procedure codes |
| Paid by Medicare | $33,718 |
Part D prescriptions in 2024
| Prescriptions (claims) | 648 · 1,178 30-day fills |
|---|---|
| Patients | 260 |
| Total drug cost | $665,403 |
| Generic share | 75% of claims |
Education and affiliations
| Medical school | University of Vermont College of Medicine |
|---|---|
| Graduation year | 2006 |
| Medicare specialty | Gastroenterology |
| Secondary specialties | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- Portercare Adventist Health SystemDenver, CO · 774 clinicians
Hospital affiliation
- Adventhealth AvistaLouisville, CO
Industry payments (Open Payments)
- 2025$1,595 · 90 payments from 16 companies
- 2024$1,241 · 65 payments from 17 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $516.66 | 30 |
| Takeda Pharmaceuticals U.S.A., Inc. | $223.32 | 14 |
| Salix Pharmaceuticals, A Division of Bausch Health US, LLC | $176.69 | 12 |
| Lilly USA, LLC | $124.76 | 6 |
| Aimmune Therapeutics, Inc. | $111.24 | 6 |
What the 2025 payments were for
- Food and Beverage$1,595 · 90 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 49 gastroenterologists in Aurora · All gastroenterologists in Colorado