Internal Medicine Doctors in Colorado
Data updated monthly · Last refresh October 2026
2,044 Internal Medicine providers practice in Colorado, including 390 (19%) offering telehealth. The largest concentration is in Denver. Profiles include federal Open Payments records of money received from drug and device companies in 2025. Listings are drawn from federal public records and are not endorsements.
2,044providers
390telehealth
Denvertop city
Internal Medicine by city in Colorado
Choose a city to see providers there.
Internal Medicine providers in Colorado
Listed by city, largest first. Payment figures come from the federal Open Payments program, which requires drug and device companies to report what they pay physicians for consulting, speaking, meals, travel and royalties. A disclosed payment is a financial relationship, not evidence of wrongdoing, and many totals reflect a single meal. Figures cover calendar year 2025.
Dr. Kevin Hou, MDLone Tree, CO · No drug or device payments recorded (2025) · Telehealth ·
(303) 265-3970 Dr. Laura Haseganu, M.D.Lone Tree, CO · No drug or device payments recorded (2025) ·
(303) 338-4545 Dr. Matthew Schmitt, M.D.Lone Tree, CO · No drug or device payments recorded (2025) ·
(303) 338-4545 Dr. Matthew YurkewiczLone Tree, CO · $150 in drug and device payments (2025) ·
(720) 225-4464 Dr. Max Wei, DOLone Tree, CO · $199 in drug and device payments (2025) ·
(720) 225-4464 Dr. Michael Wade, M.D.Lone Tree, CO · No drug or device payments recorded (2025) ·
(303) 338-4545 Dr. Mitchel Brown, D.OLone Tree, CO · $25 in drug and device payments (2025) ·
(720) 476-3364 Dr. Nikhilesh Srinivasan, MDLone Tree, CO · $473 in drug and device payments (2025) ·
(720) 225-1000 Dr. Randall Snook, M.D.Lone Tree, CO · $1,388 in drug and device payments (2025) · Telehealth ·
(303) 708-0246 Dr. Robert Heineman, DOLone Tree, CO · No drug or device payments recorded (2025) ·
(720) 476-3364 Dr. Robert Lenhart, D.O.Lone Tree, CO · No drug or device payments recorded (2025) ·
(720) 225-1322 Dr. Ronald Kwong, DOLone Tree, CO · No drug or device payments recorded (2025) · Telehealth ·
(720) 225-1000 Dr. Samuel Olson, MDLone Tree, CO · No drug or device payments recorded (2025) · Telehealth ·
(303) 265-3970 Dr. Sarah Fraser, DOLone Tree, CO · $423 in drug and device payments (2025) · Telehealth ·
(720) 225-4464 Dr. Sarah Graeber, DOLone Tree, CO · $19 in drug and device payments (2025) ·
(303) 265-3970 Dr. S. Scott Smith, M.D.Lone Tree, CO · No drug or device payments recorded (2025) ·
(303) 265-3970 Dr. Sujata Putatunda, MDLone Tree, CO · No drug or device payments recorded (2025) · Telehealth ·
(720) 516-0621 Dr. Tamara Togliatti, MDLone Tree, CO · No drug or device payments recorded (2025) ·
(720) 493-9006 Dr. Than Sein, DOLone Tree, CO · $26 in drug and device payments (2025) ·
(720) 875-2880 Dr. Thomas Feulner, DOLone Tree, CO · No drug or device payments recorded (2025) ·
(720) 225-4464 Dr. Thomas Reynolds, D.O.Lone Tree, CO · No drug or device payments recorded (2025) ·
(720) 225-1322 Dr. Brenda Eiser, MDLonetree, CO · No drug or device payments recorded (2025) ·
(303) 338-4545 Dr. Michael Mignoli, MDLonetree, CO · $250 in drug and device payments (2025) ·
(303) 768-0900 Dr. Aiman Hussain, DOLongmont, CO · No drug or device payments recorded (2025) ·
(720) 718-7000 Dr. Alessandro Testori, MD PHDLongmont, CO · $187 in drug and device payments (2025) ·
(303) 776-0868 Dr. Alycia Barland, MDLongmont, CO · No drug or device payments recorded (2025) ·
(720) 494-3118 Dr. Andrew Brown, D.O.Longmont, CO · No drug or device payments recorded (2025) ·
(720) 718-7000 Dr. Anita Ritenour, MDLongmont, CO · No drug or device payments recorded (2025) ·
(720) 718-7000 Dr. Ann SterlingLongmont, CO · No drug or device payments recorded (2025) ·
(303) 678-3230 Dr. Benjamin Shaw, D.O.Longmont, CO · No drug or device payments recorded (2025) ·
(720) 718-7000 Dr. Christine Stone, M.D.Longmont, CO · No drug or device payments recorded (2025) ·
(303) 641-6002 Dr. Christopher Koerber, DOLongmont, CO · No drug or device payments recorded (2025) ·
(720) 718-7000 Dr. David Mccarty, DOLongmont, CO · No drug or device payments recorded (2025) ·
(303) 591-4668 Dr. Elizabeth Lycett, M.D.Longmont, CO · No drug or device payments recorded (2025) · Telehealth ·
(303) 415-4246 Dr. Freda Gardner, MDLongmont, CO · No drug or device payments recorded (2025) ·
(720) 340-4293 Dr. Hartmut Koelsch, MDLongmont, CO · No drug or device payments recorded (2025) ·
(303) 776-1234 Dr. Holly Lewis, MDLongmont, CO · $15 in drug and device payments (2025) · Telehealth ·
(303) 776-1532 Dr. Honor Ashbaugh, MDLongmont, CO · No drug or device payments recorded (2025) ·
(303) 502-6735 Dr. Jennifer Weiskopf, M.D.Longmont, CO · No drug or device payments recorded (2025) ·
(720) 718-7000 Dr. John Even, MDLongmont, CO · No drug or device payments recorded (2025) ·
(720) 718-7000 Dr. Joseph Nissim, MDLongmont, CO · No drug or device payments recorded (2025) ·
(303) 415-4157 Dr. Kirsten Borbe, M.D.Longmont, CO · No drug or device payments recorded (2025) ·
(303) 338-4545 Dr. Laird Cagan, MDLongmont, CO · No drug or device payments recorded (2025) ·
(303) 776-1532 Dr. Marek Odehnal, MDLongmont, CO · No drug or device payments recorded (2025) · Telehealth ·
(720) 494-3126 Dr. Marie Bush, MDLongmont, CO · No drug or device payments recorded (2025) ·
(303) 776-1234 Dr. Marina Flecha, MDLongmont, CO · No drug or device payments recorded (2025) · Telehealth ·
(720) 494-3126 Dr. Mark Bridenstine, MDLongmont, CO · $157 in drug and device payments (2025) · Telehealth ·
(720) 494-3119 Dr. Mary Poole, MDLongmont, CO · No drug or device payments recorded (2025) ·
(303) 776-1532 Dr. Peter Holt, MDLongmont, CO · No drug or device payments recorded (2025) ·
(303) 776-1532 Dr. Peter Urffer, MDLongmont, CO · No drug or device payments recorded (2025) ·
(720) 718-7000 Conditions Internal Medicine providers in Colorado commonly treat
Patients often search by condition rather than specialty. These are conditions typically managed by Internal Medicine providers. Individual practices vary, so confirm with the provider before booking.
- High blood pressure
- Type 2 diabetes
- High cholesterol
- Preventive care
- Chronic disease management
Common questions
How many Internal Medicine providers are in Colorado?There are 2,044 Internal Medicine providers with active NPI records practicing in Colorado, according to federal NPPES data refreshed monthly.
Do Internal Medicine providers in Colorado offer telehealth?Yes. 390 of the 2,044 Internal Medicine providers in Colorado (about 19%) report offering telehealth services in CMS data.
Which cities in Colorado have the most Internal Medicine providers?Denver (495), Aurora (242), Colorado Springs (168) have the highest concentration of Internal Medicine providers in Colorado.
How many Internal Medicine providers in Colorado received drug or device company payments?409 of 2,044 Internal Medicine providers in Colorado (20%) received at least one payment from a drug or device company in 2025, according to the federal Open Payments program.
What conditions do Internal Medicine providers in Colorado treat?Internal Medicine providers commonly treat high blood pressure, type 2 diabetes, high cholesterol, preventive care, chronic disease management and related conditions. Individual practices vary, so confirm with the provider before booking.
Where does this data come from?Provider counts and profiles come from the federal NPPES registry and CMS Doctors and Clinicians files. Payment figures come from the CMS Open Payments program for calendar year 2025. The directory refreshes monthly.
Do most Internal Medicine Doctors in Colorado work in independent practices or large health systems?Among 994 Internal Medicine Doctors in Colorado enrolled in Medicare, 10% bill through a solo or small practice with fewer than 10 clinicians, 18% through a mid-size group of 10 to 99, and 72% through a large group or health system with 100 or more clinicians, according to CMS enrollment records.
Which hospitals do Internal Medicine Doctors in Colorado work at?According to CMS facility affiliation records, the Colorado hospitals where the most Internal Medicine Doctors hold privileges are University of Colorado Hospital Authority in Aurora; Uch-Memorial Health System in Colorado Springs; Uchealth Highlands Ranch Hospital in Highlands Ranch.
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