Dr. Ahnen graduated from the Wayne State University School Of Medicine in 1973. Dr. Ahnen works in Aurora, CO and 6 other locations and specializes in Gastroenterology and Internal Medicine. Dr. Ahnen is affiliated with Avista Adventist Hospital, Boulder Community Hospital, Denver Health Medical Center, Good Samaritan Medical Center, Littleton Adventist Hospital, Lutheran Medical Center, View More


Years Experience: 46

Dr. Ahnen's Specialties

Dr. Ahnen's Education & Training

Medical School
Wayne State University School Of Medicine; Graduated 1973


  • Overall Rating

  • Rate
    Explains conditions & treatments

  • Rate
    Takes time to answer my questions

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    Provides follow-up as needed

Dr. Ahnen's Accepted Insurance

Please verify insurance information directly with your doctor's office as it may change frequently.

Insurance Plans

  • Aetna Choice POS II
  • Aetna HMO
  • Aetna Managed Choice POS Open Access
  • Aetna Signature Administrators PPO
  • Aetna Whole Health Colorado Front Range

Dr. Ahnen's Office Information & Appointments

This physician has multiple office locations. See Office Information for details.


Anschutz Medical Campus Internal Medicine

12801 E 17th Ave
Aurora, CO 80045

Get Directions

Tel: (303) 724-3847

Fax: Not Available

Practice Website: ucdenver.edu/anschutz

Accepting New Patients: No

Medicare Accepted: No

Medicaid Accepted: No

M 9:00 AM - 5:00 PM
T 9:00 AM - 5:00 PM
W 9:00 AM - 5:00 PM
T 9:00 AM - 5:00 PM
F 9:00 AM - 5:00 PM
S Closed
S Closed

Other Physicians in Dr. Ahnen's Practice