Gastroenterology and Internal Medicine

Mark Nathy Durkan , MD

Harmony Surgery Center Llc
2127 E Harmony Rd Ste 200
Fort Collins, CO 80528

(970) 297-6300


Dr. Durkan graduated from the National University of Ireland, University College in Dublin in 1993. After an internship at Limerick Regional Hospital in Ireland, Dr. Durkan completed his residency at Saint Josephs Hospital, County Tipperary, Republic of Ireland. He completed his Medicine Residency at the Beth Israel Medical Center , NY between 1986 – 1990. He then completed a fellowship in GI/ Liver at the university of Colorado Health Sciences Center in Denver, 1990 – 2002. He is a member of the American Gastroenterological Association as well as the American College of Gastroenterology. He has been certified with the American Board of Internal Medicine Gastroenterology since November of 2003 and has been working with The Centers for Gastroenterology since 2002.

Gender: Male

Years in Practice: 29 Years

Languages Spoken: English and Spanish


Gastroenterology and Internal Medicine

Hospital Affiliations

  • McKee Medical Center

Education and Training

Medical School
University Of Colorado School Of Medicine,University College Dublin School Of Medicine And Medical Science Graduated in 1993

Main Location

Fax: (970) 029-7632
Accepting New Patients: Yes
Medicare Accepted: Yes
Medicaid Accepted: Yes

Office Hours:

Mon6:00 AM-4:30 PM
Tue6:00 AM-4:30 PM
Wed6:00 AM-4:30 PM
Thu6:00 AM-4:30 PM
Fri6:00 AM-4:30 PM

Other Locations

Center For Gastroenterology
3702 S Timberline Rd Ste A
Fort Collins, CO 80525
(970) 207-9773

Fax:(970) 021-2088
Accepting New Patients: Yes
Medicare Accepted:Yes
Medicaid Accepted:No

Office Hours:

Mon7:00 AM-5:00 PM
Tue7:00 AM-5:00 PM
Wed7:00 AM-5:00 PM
Thu7:00 AM-5:00 PM
Fri7:00 AM-3:30 PM

Insurance Plans Accepted

Please verify insurance information directly with your doctor’s office as it may change frequently.
  • Aetna Choice POS II
  • Aetna HMO
  • Aetna Managed Choice POS Open Access
  • Aetna Signature Administrators PPO
  • Aetna Whole Health Colorado Front Range
  • Anthem CO Blue Priority HMO
  • Anthem CO Blue Priority PPO
  • Anthem CO Bronze Pathway X HMO
  • Anthem CO Gold Pathway HMO
  • Anthem CO HMO
  • Anthem CO Pathway
  • Anthem CO Silver Pathway X HMO
  • Anthem PPO
  • BCBS Blue Card PPO
  • CIGNA LocalPlus
  • CIGNA Open Access Plus
  • First Health PPO
  • Humana Choice POS
  • Humana National POS
  • Kaiser Colorado
  • Kaiser Permanente
  • RMHP Monument - CO
  • Rocky Mountain Good Health and Vista HMO PPO
  • Rocky Mountain Monument PPO - Tier 2
  • Rocky Mountain Summit Group
  • UHC Choice Plus POS
  • UHC Navigate HMO
  • UHC Navigate POS
  • UHC Nexus Open Access
  • UHC Options PPO