Freddy Caldera, DO close
Freddy Caldera, DO

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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

Pouch Endoscopy


Ulcerative Colitis


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

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
Ley D Martin B Caldera F Use of an iPhone Application to Increase Adherence in Patients With Ulcerative Colitis in Remission: A Randomized Controlled Trial. Inflamm Bowel Dis . 2020 Feb 22;
[PubMed ID: 32086525]
Ritscher AM LeClair-Netzel M Friedlander NJ Howard Stewart DN Wagner M Kalscheur N Caldera F Hayney MS Cross-sectional study of hepatitis B antibody status in health care workers immunized as children at an academic medical center in Wisconsin. Vaccine . 2020 Feb 11;38(7):1597-1600
[PubMed ID: 31955961]
Caldera F Hillman L Saha S Wald A Grimes I Zhang Y Sharpe AR Reichelderfer M Hayney MS Immunogenicity of High Dose Influenza Vaccine for Patients with Inflammatory Bowel Disease on Anti-TNF Monotherapy: A Randomized Clinical Trial. Inflamm Bowel Dis . 2019 Aug 24;
[PubMed ID: 31504526]
Caldera F Farraye FA Rosh JR Hayney MS Prudence Using Serology to Determine Vaccine-Induced Immunity to Measles and Varicella in Patients With Inflammatory Bowel Disease. Inflamm Bowel Dis . 2019 Aug 20;25(9):e113
[PubMed ID: 31165856]
Laine J Caldera F Saha S Beware Possible False-Positive QuantiFERON-TB Gold in IBD Patients who Have Undergone Tuberclulin Skin Testing. Inflamm Bowel Dis . 2019 Aug 20;25(9):e105
[PubMed ID: 31077291]
Ley D Hayney MS Caldera F Third Time's a Charm: Immunization Strategies for Hepatitis B in Immunosuppressed Patients with Inflammatory Bowel Disease. Dig Dis Sci . 2019 Jul;64(7):1738-1739
[PubMed ID: 31079262]
Sharpe AR LeClair-Netzel M Wagner M Kalscheur N Berlin KJ Caldera F Hayney MS Healthcare worker influenza vaccine waivers at an academic health system. Infect Control Hosp Epidemiol . 2019 Jul;40(7):826-828
[PubMed ID: 31072415]
Caldera F Hayney MS Cross RK Using Number Needed to Harm to Put the Risk of Herpes Zoster From Tofacitinib in Perspective. Inflamm Bowel Dis . 2019 May 4;25(6):955-957
[PubMed ID: 30605536]
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 . 2019 Feb;89(2):373-379.e2
[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 . 2019 Jan;64(1):189-195
[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 Dec;16(12):1872-1875
[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]