Browse Health
Professor
37 years of experience
Video profile
Accepting new patients
License & Identifications

A medical license is required for a doctor to practice medicine in a particular state. Requirements vary by state but most require, at a minimum, post-graduate training in the doctor’s specific specialty. An NPI number is a national identifier unique to an individual health care provider and is managed by the Center for Medicare & Medicaid Services (CMS).

Patient Reviews

4.0
  • Currently 4 of 4 stars
(3)
Patient comments (0)

The overall average patient rating of Dr. Dennis Ahnen, Professor is Excellent. Dr. Ahnen has been reviewed by 3 patients who have provided 0 comments. The rating is 4 out of 4 stars.

Patient Ratings
Ease of Appointment 4.0
  • Currently 4 of 4 stars
Courteous Staff 4.0
  • Currently 4 of 4 stars
Accurate Diagnosis 4.0
  • Currently 4 of 4 stars
Bedside Manner 4.0
  • Currently 4 of 4 stars
Spends Time with Me 4.0
  • Currently 4 of 4 stars
Follows Up After Visit 4.0
  • Currently 4 of 4 stars

Specialties & Research

Dr. Dennis Ahnen, MD is board certified in Internal Medicine and Gastroenterology.

  • He has special expertise in 7 areas:
  • Colon Cancer
  • Colonic Polyps
  • Colonoscopy
  • Colorectal Cancer
  • Sigmoidoscopy
  • Tumor Surpressor Gene (Adenomatous Polyposis Coli
  • Ulcerative Colitis

Education & Awards

Dr. Ahnen graduated from Wayne State University, Detroit. He has 5 awards.

Awards  
One of America's Leading Experts on:
Colon Cancer (Colonic Neoplasm)
Colonic Polyps
Colonoscopy
Colorectal Cancer (Colorectal Neoplasm)
Castle Connolly's Top Doctors™ (2013)

Affiliations

Dr. Ahnen has 6 hospital affiliations:

  • University Hospital - Denver 
  • Denver Health Medical Center 

> > > > Dr. Dennis Ahnen, MD

Similar doctors nearby

Dr. William Kaehny

Internal Medicine
45 years experience
Denver, CO

Dr. Philip Guzelian

Internal Medicine
43 years experience
Denver, CO

Dr. Lyssa Chacko

Internal Medicine
9 years experience
Denver, CO

Dr. Steven Bradley

Internal Medicine
7 years experience
Denver, CO

Dr. Francis Keffler

Internal Medicine
29 years experience
Denver, CO

Dr. Michelle Barron

Internal Medicine
14 years experience
Denver, CO
Search All Similar Doctors
Additional Information
Dr. Dennis James Ahnen MD is a male Internist, has 37 years of experience and practices in Internal Medicine and Gastroenterology.
Where does Dr. Dennis J. Ahnen practice?
Dr. Dennis Ahnen has 3 office locations.
Dr. Dennis Ahnen practices Internal Medicine and Gastroenterology near Denver, CO.
Additional practice locations include: Aurora, CO.
See Denver Internists and Denver Gastroenterologists.