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Our Physicians

The Imaging Center is proud to provide imaging services to patients and physicians in Colorado, Wyoming, and Nebraska. The Imaging Center operates as a joint venture between a number of local physicians and Poudre Valley Health System. Our owner physicians are members of area medical groups including Heart Center of the Rockies, Front Range Center for Brain and Spine Surgery, Advanced Neurology of Colorado, Associates in Family Medicine, Poudre Valley Internists, Northern Colorado Pulmonary Consultants, Northern Colorado Surgical Associates, Fort Collins Neurology Associates, and Advanced Medical Imaging Consultants.

The Imaging Center is governed by a Board of Managers that meets quarterly and oversees the operation and direction of the center.

The 2017 Board includes:

  • Timothy Wirt, MD – Chair – Front Range Brain and Spine
  • Stanley Weinstein, MD – Advanced Medical Imaging Consultants
  • Thomas Nevrivy, MD – Associates in Family Medicine
  • Stephanie Doughty – CFO, UCHealth Northern Colorado
  • Jack Retzlaff – Director of Imaging Services, UCHealth Northern Colorado

The Finance Committee meets on a monthly basis with the administrators of The Imaging Center and report to the Board.

The Finance Committee consists of:

  • Nancy Timmons – Chair – Practice Administrator, Front Range Brain and Spine
  • Gary Johnson – Practice Administrator, Northern Colorado Surgical Associates
  • Stan Podolski – CEO, Advanced Medical Imaging Consultants

Studies performed at The Imaging Center are reviewed by members of Advanced Medical Imaging Consultants. Those physicians include:

Shawn Ahmed, MD

Board-Certified: American Board of Radiology
Fellowship/Subspecialty: Vascular Interventional Radiology, Massachusetts General Hospital, Boston, MA
Residency: Diagnostic Radiology, University of Minnesota, Minneapolis, MN Albert Einstein College Hospitals, Bronx, NY
MD: Creighton University School of Medicine, Omaha, NE

Dr. Benz photo

Becky K. Benz, MD

Board-Certified: American Board of Radiology
Fellowship/Subspecialty: Neuroradiology, Dartmouth-Hitchcock Medical Center in Lebanon, NH
Residency: Diagnostic Radiology, Maine Medical Center, Portland, ME
MD: University of North Dakota School of Medicine

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Bruce A. Berkowitz, MD

Board-Certified: American Board of Radiology
Fellowship/Subspecialty: Neuroradiology, Montefiore Medical Center, Bronx, NY
Residency:  Diagnostic Radiology Albert Einstein College Hospitals, Bronx, NY
MD: Albert Einstein College of Medicine, Bronx, NY

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Gregory R. Beyer, MD

Board-Certified: American Board of Radiology
Fellowship/Subspecialty: Neuroradiology & Musculoskeletal, University of Michigan Hospitals Department of Radiology Ann Arbor, MI
Residency: University of Michigan Hospital Dept of Radiology, Ann Arbor, MI
MD: Louisiana State University Health Sciences Center School of Medicine, New Orleans, LA

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John R. Bodenhamer, MD

Board-Certified: American Board of Radiology
Fellowship/Subspecialty: Vascular & Interventional Radiology, Stanford University Medical Center, Palo Alto, CA
Residency:  Diagnostic Radiology, Baylor College of Medicine, Houston, TX
MD: University of Colorado Health Sciences Center, Denver, CO

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Joseph M. Carabetta, MD

Board-Certified: American Board of Radiology
Fellowship/Subspecialty: Body Imaging / Musculoskeletal MRI, Northwestern University, Chicago, IL
Residency: The University of Chicago, Chicago, IL
MD: Jefferson Medical College of Thomas Jefferson University, Philadelphia, PA

Dr. Cicuto photo

Kenneth K. Cicuto, MD

Board-Certified: American Board of Radiology
Fellowship/Subspecialty: Vascular & Interventional Radiology, Medical College of Wisconsin
Residency: Diagnostic Radiology, Maine Medical Center in Portland, Maine
MD: St. Louis University School of Medicine, St. Louis, Missouri

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Jamie S. Colonnello, MD

Board-Certified: American Board of Radiology
Fellowship/Subspecialty: Musculoskeletal Radiology, Washington University, Mallinckrodt Institute of Radiology, St. Louis, MO
Residency: Diagnostic Radiology, Washington University, Mallinckrodt Institute of Radiology, St. Louis, MO
MD: St. Louis University School of Medicine, St. Louis, MO

Dr. Constantine photo

Nicholas J. Constantine, MD

Board-Certified: American Board of Radiology
Fellowship/Subspecialty: Abdominal Imaging, University of Virginia, Charlottesville, VA
Residency: University of South Florida College of Medicine, Tampa, FL
MD: University of South Florida College of Medicine, Tampa, FL

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Jaime H. Contreras, MD

Board-Certified: American Board of Radiology
Fellowship/Subspecialty: Neurointerventional Radiology, Stanford University , Palo Alto, CA – Neuroradiology, Barrow Neurological Institute, Phoenix, AZ
Residency:  Diagnostic Radiolog, University of Chicago, Chicago, IL
MD: Baylor College of Medicine, Houston, TX

Dr. Craven photo

Winfield M. Craven, MD

Board-Certified: American Board of Radiology
Fellowship/Subspecialty: Vascular & Interventional Radiology, University of Colorado Health Sciences Center, Denver, CO
Residency:  Diagnostic Radiology, University of Colorado Health Sciences Center, Denver, CO
MD: University of Cincinnati, College of Medicine, Cincinnati, OH

Dr. Doye photo

J. Paul Doye, MD

Board-Certified: American Board of Radiology
Fellowship/Subspecialty: Neuroradiology, Emory University Hospital, Department of Radiology & Imaging Sciences, Atlanta, GA
Residency:  Diagnostic Radiology, Emory University Hospital, Department of Radiology & Imaging Sciences, Atlanta, GA
MD: University of Oklahoma College of Medicine, Oklahoma City / Tulsa, OK

Dr. Drake photo

Thomas R. Drake, MD

Board-Certified: American Board of Radiology
Fellowship/Subspecialty: Abdominal Imaging, University of Texas HSC/University Hospital System, San Antonio, TX
Residency:  Diagnostic Radiology, University Hospital, San Antonio, TX
MD: University of Texas Health Science Center, San Antonio, TX

Dr. Dunphy photo

Thomas R. Dunphy, MD

Board-Certified: American Board of Radiology
Fellowship/Subspecialty: MRI Body & Cardiac Imaging, Northwestern University, Chicago, IL
Residency:  Diagnostic Radiology, University of Florida, Gainesville, FL
MD: St. Louis University School of Medicine, St. Louis, MO

Dr. Fleener photo

Christopher M. Fleener, MD

Board-Certified: American Board of Radiology
Fellowship/Subspecialty: Body/Abdominal Imaging, Washington University School of Medicine, Mallinckrodt Institute of Radiology, St. Louis, MO
Residency:  Diagnostic Radiology, Maine Medical Center, Portland, ME
MD: University of Iowa College of Medicine, Iowa City, IA

Dr. Geis photo

J. Raymond Geis, MD

Board-Certified: American Board of Radiology
Fellowship/Subspecialty: Body Imaging, Neuroradiology; Informatics/PACS, University of Colorado Health Sciences Center, Denver, CO
Residency: Diagnostic Radiology, University of Colorado Health Sciences Center, Denver, CO
MD: University of Colorado Health Sciences Center, Denver, CO

Dr. Geraghty photo

Michael J. Geraghty, MD

Board-Certified: American Board of Radiology
Fellowship/Subspecialty: Body Imaging, University of Wisconsin, Madison, WI
Residency:  Diagnostic Radiology, Methodist Hospital of Indiana, Indianapolis, IN
MD: University of Iowa College of Medicine, Iowa City, IA

Dr. Gunderson photo

Deborah Z. Gunderson, MD

Board-Certified: American Board of Radiology
Fellowship/Subspecialty: Nuclear Radiology, University of Utah School of Medicine, Salt Lake City, UT; Body Imaging, CT/MRI/Ultrasound, University of Colorado Health Sciences Center, Denver, CO
Residency:  Diagnostic Radiology, Sacred Heart Medical Center, Spokane, WA
MD: University of Utah School of Medicine, Salt Lake City, UT

Dr. Hayes photo

Amy S. Hayes, MD

Board-Certified: American Board of Radiology
Fellowship/Subspecialty: Vascular & Interventional Radiology, University of New Mexico Health Sciences Center, Albuquerque, NM
Residency:  Diagnostic Radiology, Virginia Mason Medical Center, Seattle, WA
MD: University of Massachusetts School of Medicine, Worcester, MA

Dr. Hennemann photo

Jeanne M. Hennemann, MD

Board-Certified: American Board of Radiology
Residency: University of Florida, Shands Teaching Hospital, Gainesville, FL & Mt. Sinai Medical Center, Miami Beach, FL
MD: University of Florida College of Medicine, Gainesville, FL

Dr. Jess photo

Sarah J.R. Jess, MD

Board-Certified: American Board of Radiology
Fellowship/Subspecialty: Neuroradiology, University of Utah Health Sciences Center, Salt Lake City, UT
Residency:  Diagnostic Radiology, University of Utah Health Sciences Center, Salt Lake City, UT
MD: University of Tennessee College of Medicine, Memphis, TN

Dr. Johnson photo

Paul W. Johnson, MD

Board-Certified: American Board of Radiology
Fellowship/Subspecialty: Cross-Sectional Imaging, Mayo School of Graduate Medical Education, Jacksonville, FL
Residency:  Diagnostic Radiology, Mayo School of Graduate Medical Education, Rochester, MN
MD: Mayo Medical School, Rochester, MN

Dr. Jones photo

Isaac Jones, MD

Board-Certified: American Board of Radiology
Fellowship/Subspecialty: Neuroradiology, University of Colorado, Aurora, CO
Residency: Diagnostic Radiology, Loma Linda University Medical Center, Loma Linda, CA
MD: University of Miami Miller School of Medicine, Miami, FL

Dr. Jordan photo

Alistair C. Jordan, DO

Board-Certified: American Board of Radiology
Fellowship/Subspecialty: Vascular & Interventional Radiology, University of Arkansas, Little Rock, Arkansas
Residency:  Dartmouth-Hitchcock Medical Center, Lebanon, NH
DO: Midwestern University in Downers Grove, IL

Dr. Lawson photo

McKinley C. Lawson, MD, Ph.D.

Board-Certified: American Board of Radiology
Fellowship/Subspecialty: Musculoskeletal Imaging, Massachusetts General Hospital
Residency: Diagnostic Radiology, University of Colorado School of Medicine, Aurora, CO
MD: University of Colorado School of Medicine, Aurora, CO
Ph.D.: Chemical Engineering, Department of Chemical and Biological Engineering, University of Colorado, Boulder, CO

Dr. Lenderink-Carpenter photo

Amanda M. Lenderink-Carpenter, MD

Board-Certified: American Board of Radiology
Fellowship/Subspecialty: Breast Imaging , University of Washington/Seattle Cancer Care Alliance
Residency: Diagnostic Radiology, University of Washington Department of Radiology
MD: Virginia Commonwealth University School of Medicine

Dr. Limbaugh photo

Kevin J. Limbaugh, MD

Board-Certified: American Board of Radiology
Fellowship/Subspecialty: Nuclear Medicine, Oregon Health and Sciences University, Portland, OR
Residency: Diagnostic Radiology/Nuclear Medicine, Oregon Health and Sciences University, Portland, OR
MD: University of Maryland School of Medicine, Baltimore, MD

Dr. Lull photo

Lisa Lull, MD

Board-Certified: American Board of Radiology
Fellowship/Subspecialty: Body Imaging, Johns Hopkins Hospital, Baltimore, MD
Residency: Diagnostic Radiology, University of South Alabama, Mobile, AL
MD: University of Texas at Houston Medical School, Houston, TX

Dr. Luttenegger photo

Thomas J. Luttenegger, MD, Emeritus

Board-Certified: American Board of Radiology
Fellowship/Subspecialty: American College of Radiology
Residency: Diagnostic Radiology, Naval Regional Medical Center, Oakland, CA
MD: University of Colorado Health Sciences Center, Denver, CO

Dr. Markel photo

Curtis L. Markel, MD

Board-Certified: American Board of Radiology
Fellowship/Subspecialty: Body Imaging, University of New Mexico Health Sciences Center, Albuquerque, NM
Residency:  Diagnostic Radiology, University of New Mexico Health Sciences Center, Albuquerque, NM
MD: University of Colorado Health Sciences Center, Denver, CO

Dr. Mills photo

Andrew D. Mills, MD

Board-Certified: American Board of Radiology
Fellowship/Subspecialty: Musculoskeletal Radiology, University of Virginia, Charlottesville, VA
Residency:  Creighton University Medical Center, Omaha, NE
MD: Creighton University Medical Center, Omaha, NE

Dr. Pacini photo

Richard J. Pacini, MD

Board-Certified: American Board of Radiology
Fellowship/Subspecialty: MRI/Body & Neuroimaging, University of Colorado Health Sciences Center, Denver, CO
Residency:  Diagnostic Radiology, Washington University School of Medicine,
Mallinckrodt Institute of Radiology, St. Louis, MO
MD: University of Colorado Health Sciences Center, Denver, CO

Dr. Paquelet photo

Jean R. Paquelet, MD

Board-Certified: American Board of Radiology
Fellowship/Subspecialty: Breast Imaging
Fellow: American College of Radiology
Residency:  Ohio State University Medical Center, Columbus, OH
MD: Medical College of Ohio, Toledo, OH

Dr. Peck photo

Steven H. Peck, MD

Board-Certified: American Board of Radiology
Fellowship/Subspecialty: Vascular & Interventional Radiology, St. Luke’s-Roosevelt Hospital, New York, NY
Residency:  Diagnostic Radiology, Pennsylvania Hospital, Philadelphia, PA
MD: University of Wisconsin School of Medicine, Madison, WI

Dr. Reese photo

Mark F.A. Reese, MD

Board-Certified: American Board of Radiology
Fellowship/Subspecialty: Neuroradiology, Vanderbilt University Medical Center, Nashville, TN
Residency:  Diagnostic Radiology, Vanderbilt University Medical Center, Nashville, TN
MD: University of Iowa College of Medicine, Iowa City, IA

Dr. Rogan photo

Michael J. Rogan, MD

Board-Certified: American Board of Radiology
Fellowship/Subspecialty: Body Imaging, University of Vermont College of Medicine, Burling, VT. Interventional Radiology, University of Minnesota, Minneapolis, MN
Residency: Diagnostic Radiology, University of Minnesota Medical School, Minneapolis, MN
MD: University of Minnesota Medical School, Minneapolis, MN

Dr. Ruderman photo

Richard M. Ruderman, MD

Board-Certified: American Board of Radiology
Fellowship/Subspecialty: Angio/Interventional, Temple University Hospital, Philadelphia, PA
Residency: Diagnostic Radiology, Hartford Hospital, Hartford, CT
MD: Hahnemann Medical College, Philadelphia, PA

Dr. Singer photo

Charles J. Singer, MD

Board-Certified: American Board of Radiology
Fellowship/Subspecialty: Nuclear Medicine, University of Colorado Health Sciences Center, Denver, CO
Residency:  Diagnostic Radiology, University of Colorado Health Sciences Center, Denver, CO
MD: West Virginia University School of Medicine, Morgantown, WV

Dr. Statkus photo

Nicholas Jerome Statkus, MD

Board-Certified: American Board of Radiology
Fellowship/Subspecialty: Neuroradiology, Oregon Health & Science University, Portland, OR
Residency: Oregon Health & Science University, Portland, OR
MD: Oregon Health & Science University, Portland, OR

Dr. Walter photo

Jacob Chris Walter, MD

Board-Certified: American Board of Radiology
Fellowship/Subspecialty: Nuclear Radiology, University of Colorado Health Sciences Center, Aurora, CO
Residency: Diagnostic Radiology, University of Colorado Health Sciences Center, Aurora, CO
MD: Creighton University School of Medicine, Omaha, NE

Dr. Weinstein photo

Stanley W. Weinstein, MD

Board-Certified: American Board of Radiology
Fellowship/Subspecialty: Body Imaging/Musculoskeletal MRI, Northwestern Memorial Hospital, Chicago, IL
Residency:  Diagnostic Radiology, Loyola University Medical Center, Maywood, IL
MD: The Medical College of Wisconsin, Milwaukee, WI

Dr. Weissmann photo

Jeffrey R. Weissmann, MD

Board-Certified: American Board of Radiology
Fellowship/Subspecialty: Neuroradiology, University of South Alabama, Mobile, AL; Interventional Radiology, Thomas Jefferson University Hospital, Philadelphia, PA
Residency:  Diagnostic Radiology, Louisiana State University, Shreveport, LA
MD: Louisiana State University School of Medicine, Shreveport, LA

Dr. Wiedeman photo

Marjorie M. Wiedeman, MD

Board-Certified: American Board of Radiology
Fellowship/Subspecialty: Musculoskeletal Radiology, University of Florida College of Medicine, Gainesville, FL
Residency: Diagnostic Radiology, University of Texas – Medical Branch, Galveston, TX
MD: University of Texas – Medical Branch, Galveston, TX

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