Freddy Caldera, DO close
Freddy Caldera, DO

New Patients

Contact the Welcome Center for help choosing a new primary care doctor.

For Referring Physicians

How to refer a patient

Freddy Caldera, DO Print Friendly Page

Faculty, University of Wisconsin School of Medicine and Public Health


Gastroenterology and Hepatology

Celiac Disease


Colon and Small Bowel Stricture Dilations

Crohn's Disease



Inflammatory Bowel Disease

Irritable Bowel Syndrome

Pouch Endoscopy


Ulcerative Colitis


Digestive Health Center
(608) 890-5000 | (855) 342-9900 | Map
Digestive Health Center
(608) 890-5000 | (855) 342-9900 | Map

Hospital Affiliation(s)

University Hospital
UnityPoint Health - Meriter
Veterans Hospital - Wm. S. Middleton Memorial

UW School of Medicine and Public Health

Department of Medicine

Professional Certifications and Education

Board Certification Gastroenterology
Internal Medicine
Fellowship University of Kentucky Medical Center, Lexington, KY
Residency University of Kentucky Medical Center, Lexington, KY
Internship Providence Hospital and Medical Center, Southfield, MI
Medical School Des Moines University College of Osteopathic Medicine, Des Moines, IA

Languages Spoken

Medical interpreters are available to help patients communicate with hospital and clinic staff. For more information, please contact interpreter services at (608) 262-9000.
PubMed Articles
Megna B Weiss J Ley D Saha S Pfau P Grimes I Li Z Caldera F Clear liquid diet before bowel preparation predicts successful chromoendoscopy in patients with inflammatory bowel disease. Gastrointest Endosc . 2018 Oct 16;
[PubMed ID: 30339950]
Caldera F Misch EA Saha S Wald A Zhang Y Hubers J Megna B Ley D Reichelderfer M Hayney MS Immunosuppression Does Not Affect Antibody Concentrations to Measles, Mumps, and Rubella in Patients with Inflammatory Bowel Disease. Dig Dis Sci . 2018 Oct 13;
[PubMed ID: 30317494]
Caldera F Farraye FA Kane S The Who and Why of Herpes Zoster Vaccination in Patients With Inflammatory Bowel Diseases. Clin Gastroenterol Hepatol . 2018 Aug 25;
[PubMed ID: 30153518]
Caldera F Saha S Wald A Garmoe CA McCrone S Megna B Ley D Reichelderfer M Hayney MS Lower Sustained Diphtheria and Pertussis Antibody Concentrations in Inflammatory Bowel Disease Patients. Dig Dis Sci . 2018 Jun;63(6):1532-1540
[PubMed ID: 29594970]
Ley D Jones J Parrish J Salih S Caldera F Tirado E Leader B Saha S Methotrexate Reduces DNA Integrity in Sperm From Men With Inflammatory Bowel Disease. Gastroenterology . 2018 Jun;154(8):2064-2067.e3
[PubMed ID: 29481778]
Megna B Saha S Wald A Agni R Matkowskyj KA Caldera F Symptomatic Microscopic Colitis Atop Quiescent Inflammatory Bowel Disease: A Case Series. ACG Case Rep J . 2017;4:e124
[PubMed ID: 29299484]
Caldera F Wasan SK Farraye FA Hayney MS Caution When Assessing Immunity to Varicella Through Antibody Testing in Patients with Inflammatory Bowel Disease. Inflamm Bowel Dis . 2017 Oct;23(10):E50-E51
[PubMed ID: 28906295]
Craddock LN Cooley DM Endo JO Longley BJ Caldera F TNF inhibitor induced alopecia: an unusual form of psoriasiform alopecia that breaks the Renbök mold. Dermatol Online J . 2017 Mar 15;23(3)
[PubMed ID: 28329519]
Caldera F Ninos CL Hayney MS Herpes zoster: The changing landscape. J Am Pharm Assoc (2003) . 2017 Mar - Apr;57(2):281-283
[PubMed ID: 28285776]
Caldera F Hayney MS Barriers to Administration of Herpes Zoster Immunization in Patients with Inflammatory Bowel Disease. Inflamm Bowel Dis . 2016 Nov;22(11):E44
[PubMed ID: 27760080]
Caldera F Saha S Ley D Hayney MS Vaccination of patients with inflammatory bowel disease. J Am Pharm Assoc (2003) . 2016 Sep-Oct;56(5):591-3
[PubMed ID: 27594110]
Caldera F Saha S Wald A Cooley DM Zhao YQ Li Z Bartels CM Comparing guideline-based care quality for inflammatory bowel disease and rheumatoid arthritis patients within a medical home. Expert Rev Gastroenterol Hepatol . 2016 Jun;10(6):759-66
[PubMed ID: 27029237]
Beniwal-Patel P Matkowskyj K Caldera F Infliximab Therapy for Corticosteroid-Resistant Ipilimumab-Induced Colitis. J Gastrointestin Liver Dis . 2015 Sep;24(3):274
[PubMed ID: 26405697]
Alimi A Weeth-Feinstein LA Stettner A Caldera F Weiss JM Overlap of Juvenile polyposis syndrome and Cowden syndrome due to de novo chromosome 10 deletion involving BMPR1A and PTEN: implications for treatment and surveillance. Am J Med Genet A . 2015 Jun;167(6):1305-8
[PubMed ID: 25846706]
Walker AJ Caldera F Response. Gastrointest Endosc . 2014 Mar;79(3):540
[PubMed ID: 24528835]
Fielding C Caldera F Selby L Split dosing bowel preparation: patients' willingness and lack of interference with travel. J Clin Gastroenterol . 2014 Jan;48(1):94
[PubMed ID: 24045273]
Walker AJ Caldera F Corrosive esophageal injury by button battery. Gastrointest Endosc . 2013 Oct;78(4):654; discussion 654-5
[PubMed ID: 23800701]
Caldera F Grimes I Soni A Reactivation of latent tuberculosis in a Crohn's patient after TB prophylaxis treated with adalimumab. Am J Gastroenterol . 2013 Jul;108(7):1181-2
[PubMed ID: 23821003]
Caldera F Selby L How to avoid common pitfalls with bowel preparation agents. Gastrointest Endosc . 2011 Feb;73(2):346-8
[PubMed ID: 21295645]