Dr. Amanda Sullivan, DO
Gastroenterology (Gastroenterology Physician)
1001 Southpark Dr
Littleton, CO 80120
Who else practices at this address →
Arapahoe County includes primary care (8% of residents) shortage areas. About shortage areas
- Medicare participating
At a glance
- Medical school
- University of Pikeville, Kentucky College of Osteopathic Med (2017)
- Years since graduation
- 9
- In the NPI registry since
- 2017
- Medicare patients seen, 2024
- 173
Licensed in Colorado since 2020, according to the Colorado Department of Regulatory Agencies. We show license dates only for the states that publish them in bulk; see which states do. For other states, check the state medical board.
The NPI date is when this clinician registered for a National Provider Identifier, the billing number used on health claims. It is not a license, graduation or board-certification date. What an NPI is
Education and training
- 2017Medical school: University of Pikeville, Kentucky College of Osteopathic Med
- 2017Registered with an NPI (national billing number; not a license date)
Undergraduate school, residency, fellowship, licensing exams and board certification aren’t in public federal data. Board certification can be confirmed with the certifying board (ABMS member boards for MDs, AOA boards for DOs).
Specialties and state licenses
-
Gastroenterology Physician primary
CO license DR.0063937 (first issued 2020; active) - Student in an Organized Health Care Education/Training Program
As reported to the NPI registry. To confirm a license is current, check the state medical board.
Where they work
Hospitals
- Adventhealth Littleton Littleton, CO
Medical groups
- Rocky Mountain Gastroenterology Associates, PLLC (36 clinicians)
Hospitals this clinician lists with Medicare, and groups they bill Medicare through (Care Compare). Affiliation doesn’t mean they see patients at every location.
Medicare patients and services
- Medicare patients, 2024
- 173
- Services billed
- 953
- Patients’ average age
- 72
| Service | Times | Patients |
|---|---|---|
| New patient office or other outpatient visit, 45-59 minutes | 11 | 11 |
Medicare fee-for-service only. CMS leaves out services billed for fewer than 11 patients. These figures describe a practice’s Medicare work; they aren’t a measure of quality.
Medicare prescriptions
| Drug | Prescriptions |
|---|---|
| Omeprazole Other prescribers in Littleton, CO | 54 |
| Pantoprazole Sodium Other prescribers in Littleton, CO | 18 |
| Gavilyte-G (peg3350/sod sulf,bicarb,cl/kcl) Other prescribers in Littleton, CO | 13 |
Prescriptions filled under Medicare Part D, including refills. CMS leaves out drugs prescribed fewer than 11 times.
Payments from drug and device companies
In 2025, 16 companies reported 63 payments worth $1,315 in total to this clinician.
| AbbVie Inc. | $182 |
|---|---|
| Salix Pharmaceuticals, A Division of Bausch Health US, LLC | $166 |
| Gilead Sciences, Inc. | $161 |
| Pfizer Inc. | $120 |
| Madrigal Pharmaceuticals | $118 |
| Celltrion USA Inc. | $91.58 |
| Regeneron Healthcare Solutions, Inc. | $82.89 |
| Takeda Pharmaceuticals U.S.A., Inc. | $75.27 |
| Food and Beverage | $1,315 |
|---|
From CMS Open Payments. A payment is not evidence of wrongdoing; many are for consulting, teaching or meals. Clinicians can review and dispute their records with CMS.