Dennis James Ahnen , MD

Gastroenterology , Internal Medicine and Medical Oncology

(303) 604-5000

Gastroenterology Of The Rockies
1551 Professional Ln Unit 290
Longmont, CO 80501

Overview

Dr. Ahnen graduated from the Wayne State University School of Medicine in 1973. He works in Louisville, CO and 7 other locations and specializes in Gastroenterology, Internal Medicine and Medical Oncology. Dr. Ahnen is affiliated with Denver Health Medical Center, Porter Adventist Hospital, University Of Colorado Hospital, Lutheran Medical Center, Boulder Community Hospital, Littleton Adventist Hospital, Avista Adventist Hospital and Good Samaritan Medical Center.

Gender: Male

Years in Practice: 47 Years

Languages Spoken: English and Spanish

Education & Training

Medical School: Wayne State University School Of Medicine

Graduation Date: in 1973

Specialties & Hospital Affiliations

Hospital Affiliations:

  • Good Samaritan Medical Center
  • Avista Adventist Hospital
  • Lutheran Medical Center
  • Denver Health Medical Center
  • Littleton Adventist Hospital
  • Boulder Community Hospital
  • University Of Colorado Hospital
  • Porter Adventist Hospital

Specialties: Gastroenterology , Internal Medicine and Medical Oncology

Health Insurance and Affiliations

  • 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 Connect Network EPO
  • CIGNA HMO
  • CIGNA LocalPlus
  • CIGNA Open Access Plus
  • CIGNA PPO
  • Colorado Choice Health Plans
  • First Health PPO
  • Humana Choice POS
  • Humana Colorado HMOx
  • Humana National POS
  • Multiplan PPO
  • PHCS PPO
  • 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 Options PPO

Ahnen's Office Information

Fax: (720) 089-0036
Website: www.gastrorockies.com
Accepting New Patients: Yes
Medicare Accepted: Yes
Medicaid Accepted: Yes

Office Hours:

Mon8:00 AM-5:00 PM
Tue8:00 AM-5:00 PM
Wed8:00 AM-5:00 PM
Thu8:00 AM-5:00 PM
Fri8:00 AM-5:00 PM
Sat-
Sun-

Doctor Ahnen's Other Office Information

Gastroenterology Of The Rockies
1000 W South Boulder Rd Ste 200
Lafayette, CO 80026
(303) 604-5000

Fax:(720) 089-0050
Website:gastrorockies.com
Accepting New Patients: Yes
Medicare Accepted:Yes
Medicaid Accepted:No

Office Hours:

Mon8:00 AM-5:00 PM
Tue8:00 AM-5:00 PM
Wed8:00 AM-5:00 PM
Thu8:00 AM-5:00 PM
Fri8:00 AM-5:00 PM
Sat-
Sun-

Gastroenterology Of The Rockies
16677 Lowell Blvd Ste 200
Broomfield, CO 80023
(303) 926-4848

Fax:(720) 089-0036
Website:www.gastrorockies.com
Accepting New Patients: Yes
Medicare Accepted:Yes
Medicaid Accepted:No

Office Hours:

Mon8:00 AM-5:00 PM
Tue8:00 AM-5:00 PM
Wed8:00 AM-5:00 PM
Thu8:00 AM-5:00 PM
Fri8:00 AM-5:00 PM
Sat-
Sun-

University Of Colorado Hospital Gastroenterology
1635 Aurora Ct
Aurora, CO 80045
(720) 848-2777

Fax:(720) 084-8177
Website:www.uchealth.org
Accepting New Patients: Yes
Medicare Accepted:Yes
Medicaid Accepted:No

Office Hours:

Mon8:00 AM-5:00 PM
Tue8:00 AM-5:00 PM
Wed8:00 AM-5:00 PM
Thu8:00 AM-5:00 PM
Fri8:00 AM-5:00 PM
Sat-
Sun-

Anschutz Medical Campus Internal Medicine
12801 E 17th Ave
Aurora, CO 80045
(303) 724-3847

Fax:
Website:ucdenver.edu/anschutz
Accepting New Patients: No
Medicare Accepted:No
Medicaid Accepted:No

Office Hours:

Mon9:00 AM-5:00 PM
Tue9:00 AM-5:00 PM
Wed9:00 AM-5:00 PM
Thu9:00 AM-5:00 PM
Fri9:00 AM-5:00 PM
Sat-
Sun-

Gastroenterology Of The Rockies
1755 48th St Ste 100
Boulder, CO 80301
(303) 604-5000

Fax:
Website:www.gastrorockies.com
Accepting New Patients: Yes
Medicare Accepted:Yes
Medicaid Accepted:No

Office Hours:

N/A

Gastroenterology Of The Rockies Lakewood
13952 Denver West Pkwy Ste 100
Lakewood, CO 80401
(303) 604-5000

Fax:(720) 089-0036
Website:Not available
Accepting New Patients: No
Medicare Accepted:No
Medicaid Accepted:No

Office Hours:

N/A

Gastroenterology Of The Rockies
382 S Arthur Ave
Louisville, CO 80027
(720) 932-7723

Fax:(720) 089-0050
Website:gastrorockies.com
Accepting New Patients: Yes
Medicare Accepted:Yes
Medicaid Accepted:No

Office Hours:

Mon-
Tue-
Wed-
Thu-
Fri-
Sat-
Sun-

View All Gastroenterology , Internal Medicine and Medical Oncology Specialist Doctors in Boulder, CO