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Anesthesiologists in Colorado

Data updated monthly · Last refresh October 2026

1,205 Anesthesiology providers practice in Colorado, including 7 (1%) 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.

1,205providers
7telehealth
Denvertop city

Anesthesiology by city in Colorado

Choose a city to see providers there.

Anesthesiology in Denver224 providers
Anesthesiology in Aurora160 providers
Anesthesiology in Greenwood Village157 providers
Anesthesiology in Colorado Springs120 providers
Anesthesiology in Fort Collins68 providers
Anesthesiology in Englewood56 providers
Anesthesiology in Golden48 providers
Anesthesiology in Grand Junction36 providers
Anesthesiology in Boulder35 providers
Anesthesiology in Lakewood34 providers
Anesthesiology in Lafayette31 providers
Anesthesiology in Pueblo31 providers
Anesthesiology in Wheat Ridge30 providers
Anesthesiology in Lone Tree19 providers
Anesthesiology in Greeley17 providers
Anesthesiology in Durango14 providers
Anesthesiology in Brighton10 providers
Anesthesiology in Littleton10 providers
Anesthesiology in Vail8 providers
Anesthesiology in Fort Carson7 providers
Anesthesiology in Louisville6 providers
Anesthesiology in Montrose6 providers
Anesthesiology in Loveland5 providers
Anesthesiology in Steamboat Springs5 providers

Anesthesiology 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. Michael Ash, MD
Grand Junction, CO · No drug or device payments recorded (2025) · (970) 242-0920
Dr. Nathan Williams
Grand Junction, CO · No drug or device payments recorded (2025) · (970) 244-2506
Dr. Nell Martin, MD
Grand Junction, CO · No drug or device payments recorded (2025) · (970) 242-0920
Dr. Per-olof Balke, MD
Grand Junction, CO · No drug or device payments recorded (2025) · (970) 244-2506
Dr. Peter Robbiano, M.D.
Grand Junction, CO · No drug or device payments recorded (2025) · (970) 244-2273
Dr. Philip Bowen, MD
Grand Junction, CO · No drug or device payments recorded (2025) · (970) 244-2506
Dr. Ronald Smith, M.D.
Grand Junction, CO · No drug or device payments recorded (2025) · (970) 241-8013
Dr. Sigma Alpha, MD
Grand Junction, CO · No drug or device payments recorded (2025) · (970) 242-0920
Dr. Steven Gardner, MD
Grand Junction, CO · No drug or device payments recorded (2025) · (970) 244-2506
Dr. Steven Jones, M.D.
Grand Junction, CO · $47 in drug and device payments (2025) · (970) 244-2273
Dr. Tamara Rice, MD
Grand Junction, CO · No drug or device payments recorded (2025) · (970) 242-0920
Dr. Todd Kinnick, DO
Grand Junction, CO · No drug or device payments recorded (2025) · (970) 243-7245
Dr. Vanpraseuth Fongnaly, M.D.
Grand Junction, CO · No drug or device payments recorded (2025) · (970) 242-0920
Dr. William Martin, MD
Grand Junction, CO · No drug or device payments recorded (2025) · (970) 254-1686
Dr. Alan Merkow, MD
Greeley, CO · No drug or device payments recorded (2025) · (970) 495-0300
Dr. Brian Hamberg, DO
Greeley, CO · No drug or device payments recorded (2025) · (970) 420-0905
Dr. Callana Fox, MD
Greeley, CO · No drug or device payments recorded (2025) · (970) 810-4121
Dr. Christopher Michael, MD
Greeley, CO · No drug or device payments recorded (2025) · (970) 350-4800
Dr. David Hufnagel, M.D.
Greeley, CO · No drug or device payments recorded (2025) · (970) 352-4121
Dr. Gregory Campbell, M.D.
Greeley, CO · $18 in drug and device payments (2025) · (970) 810-4121
Dr. Jonathan Lord, DO
Greeley, CO · No drug or device payments recorded (2025) · (970) 352-4121
Dr. Kane Smith, DO
Greeley, CO · $18 in drug and device payments (2025) · (970) 810-4121
Dr. Kenyon Morrow, M.D.
Greeley, CO · No drug or device payments recorded (2025) · (970) 506-6789
Dr. Mark Faszholz, MD
Greeley, CO · No drug or device payments recorded (2025) · (970) 350-4819
Dr. Mary Maxwell, MD
Greeley, CO · No drug or device payments recorded (2025) · (970) 495-0300
Dr. Owen Dry, MD
Greeley, CO · $401 in drug and device payments (2025) · (970) 352-4121
Dr. Robert Hagebak, MD
Greeley, CO · $107 in drug and device payments (2025) · (970) 350-6399
Dr. Robert Hart, M.D.
Greeley, CO · No drug or device payments recorded (2025) · (970) 506-6700
Dr. Shelley Peetz, M.D.
Greeley, CO · No drug or device payments recorded (2025) · (970) 506-6700
Dr. Vicki Callahan, MD
Greeley, CO · No drug or device payments recorded (2025) · (970) 810-4969
Dr. Yo-jun Song, MD, PHD
Greeley, CO · No drug or device payments recorded (2025) · (970) 352-4121
Dr. Aaron Hansen, MD
Greenwood Village, CO · $61 in drug and device payments (2025) · (303) 438-3999
Dr. Aaron Lam, M.D.
Greenwood Village, CO · $36 in drug and device payments (2025) · (303) 261-2170
Dr. Albert Chen
Greenwood Village, CO · No drug or device payments recorded (2025) · (303) 438-3999
Dr. Alexander Cranford, MD
Greenwood Village, CO · No drug or device payments recorded (2025) · (303) 438-3999
Dr. Alexander Nelsen, DO
Greenwood Village, CO · No drug or device payments recorded (2025) · (303) 438-3999
Dr. Alexander Service, MD
Greenwood Village, CO · $36 in drug and device payments (2025) · (303) 785-4700
Dr. Aly Branstiter, MD
Greenwood Village, CO · $6,258 in drug and device payments (2025) · (303) 438-3999
Dr. Amanda Craven, MD
Greenwood Village, CO · $31 in drug and device payments (2025) · (303) 438-3999
Dr. Anders Carlstedt, MD
Greenwood Village, CO · No drug or device payments recorded (2025) · (303) 438-3999
Dr. Andrew Gordon, D.O.
Greenwood Village, CO · $188 in drug and device payments (2025) · (303) 438-3999
Dr. Anna Geltser, MD
Greenwood Village, CO · No drug or device payments recorded (2025) · (303) 438-3999
Dr. Anne Larson, M.D.
Greenwood Village, CO · No drug or device payments recorded (2025) · (303) 438-3999
Dr. Barbara Fried, MD
Greenwood Village, CO · $37 in drug and device payments (2025) · (303) 438-3999
Dr. Benjamin Brenning
Greenwood Village, CO · No drug or device payments recorded (2025) · (303) 785-4700
Dr. Bradley St John, MD
Greenwood Village, CO · $25 in drug and device payments (2025) · (303) 438-3999
Dr. Brendan Keen, M.D.
Greenwood Village, CO · No drug or device payments recorded (2025) · (303) 785-4700
Dr. Brittan Sutphin
Greenwood Village, CO · No drug or device payments recorded (2025) · (303) 438-3999
Dr. Bruce Baird, MD
Greenwood Village, CO · $24 in drug and device payments (2025) · (303) 438-3999
Dr. Bruce Imerman, MD
Greenwood Village, CO · No drug or device payments recorded (2025) · (303) 438-3999

Common questions

How many Anesthesiology providers are in Colorado?

There are 1,205 Anesthesiology providers with active NPI records practicing in Colorado, according to federal NPPES data refreshed monthly.

Do Anesthesiology providers in Colorado offer telehealth?

Yes. 7 of the 1,205 Anesthesiology providers in Colorado (about 1%) report offering telehealth services in CMS data.

Which cities in Colorado have the most Anesthesiology providers?

Denver (224), Aurora (160), Greenwood Village (157) have the highest concentration of Anesthesiology providers in Colorado.

How many Anesthesiology providers in Colorado received drug or device company payments?

310 of 1,205 Anesthesiology providers in Colorado (26%) received at least one payment from a drug or device company in 2025, according to the federal Open Payments program.

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 Anesthesiologists in Colorado work in independent practices or large health systems?

Among 693 Anesthesiologists in Colorado enrolled in Medicare, 6% bill through a solo or small practice with fewer than 10 clinicians, 18% through a mid-size group of 10 to 99, and 76% through a large group or health system with 100 or more clinicians, according to CMS enrollment records.

Which hospitals do Anesthesiologists in Colorado work at?

According to CMS facility affiliation records, the Colorado hospitals where the most Anesthesiologists hold privileges are University of Colorado Hospital Authority in Aurora; Uch-Memorial Health System in Colorado Springs; Adventhealth Porter in Denver.

Related reading on HealthcareDiscovery.AI

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Sources: NPPES (CMS), Doctors and Clinicians national files, CMS Open Payments 2025. Updated monthly. Records are public federal data and are not verified credentials, licensure checks, or endorsements. This directory is informational and not medical advice. How we build this directory. Are you a Anesthesiology in Colorado? Get featured.