Patient Portal

Parakkal Deepak, MBBS, MS

Assistant Professor, Medicine
Division of Gastroenterology

Specialty Areas

Gastroenterology
Inflammatory Bowel Disease
Crohn's Disease
Ulcerative Colitis

Board Certifications

Internal Medicine
Gastroenterology

Hospital Affiliations

Barnes-Jewish Hospital

Languages

Hindi

Areas of Clinical Interest

Crohn's disease, ulcerative colitis, pouchitis, celiac disease, checkpoint inhibitor induced colitis, microscopic colitis.

  • Maps & Directions
  • Education
  • Publication & Research

Maps & Directions

Maps & Directions

Center for Advanced Medicine
Gastrointestinal Center

4921 Parkview Place
St. Louis, MO 63110

Suite: C
Floor: 8
Office Phone: 314-747-2066
Fax: 314-747-5871

Education

Education

Advanced Fellowship, Inflammatory Bowel Disease: Mayo Clinic, Rochester, MN 2017
Masters in Clinical and Translational Science: Mayo Clinic, Rochester, MN 2017
Fellowship, Gastroenterology: Mayo Clinic, Rochester, MN 2016
Clinical Research Fellowship, Gastroenterology: NorthShore University HealthSystem, Evanston, IL 2013
Residency, Internal Medicine: University of Chicago (NorthShore), Evanston, IL 2011
MS, General Surgery: All India Institute of Medical Sciences, New Delhi, India 2007
Medical Degree: Jawaharlal Institute of Postgraduate Medical Education & Research (JIPMER), Puducherry, India 2004

Publication & Research

Publication & Research

Mucinous Small Bowel Adenocarcinoma Mimicking Change to Internal Penetrating Phenotype in Well-controlled Crohn's Disease.
Tirath A, Christophi GP, Fraum TJ, Chatterjee D, Deepak P
Am J Gastroenterol. 2018 Nov; 113(11)1732-1733. doi: 10.1038/s41395-018-0277-3.

PMID:
    30333545
    [PubMed - in process]
Related citations


Ustekinumab Is Effective for the Treatment of Crohn's Disease of the Pouch in a Multicenter Cohort.
Weaver KN, Gregory M, Syal G, Hoversten P, Hicks SB, Patel D, Christophi G, Beniwal-Patel P, Isaacs KL, Raffals L, Deepak P, Herfarth HH, Barnes EL
Inflamm Bowel Dis. 2018 Oct 5; doi: 10.1093/ibd/izy302.

PMID:
    30295784
    [PubMed - as supplied by publisher]
Related citations


Anti-Tumor Necrosis Factor Therapy for Inflammatory Bowel Diseases Do Not Impact Serious Infections After Arthroplasty.
Gregory MH, McKinnon A, Stwalley D, Hippensteel KJ, Loftus EV Jr, Ciorba MA, Olsen MA, Deepak P
J Crohns Colitis. 2018 Sep 26; doi: 10.1093/ecco-jcc/jjy148.

PMID:
    30256926
    [PubMed - as supplied by publisher]
Related citations


Novel Imaging Approaches in Inflammatory Bowel Diseases.
Deepak P, Fowler KJ, Fletcher JG, Bruining DH
Inflamm Bowel Dis. 2018 Jul 13; doi: 10.1093/ibd/izy239.

PMID:
    30010908
    [PubMed - as supplied by publisher]
Related citations


Phenotype and Clinical Course of Inflammatory Bowel Disease With Co-existent Celiac Disease.
Tse CS, Deepak P, De La Fuente J, Bledsoe AC, Larson JJ, Murray JA, Papadakis KA
J Crohns Colitis. 2018 Jul 30; 12(8)973-980. doi: 10.1093/ecco-jcc/jjy061.

PMID:
    29741603
    [PubMed - in process]
Related citations


Diffusion-weighted MRI in inflammatory bowel disease.
Pouillon L, Laurent V, Pouillon M, Bossuyt P, Bonifacio C, Danese S, Deepak P, Loftus EV Jr, Bruining DH, Peyrin-Biroulet L
Lancet Gastroenterol Hepatol. 2018 Jun; 3(6)433-443. doi: 10.1016/S2468-1253(18)30054-2.

PMID:
    29739674
    [PubMed - in process]
Related citations


Predictors of Durability of Radiological Response in Patients With Small Bowel Crohn's Disease.
Deepak P, Fletcher JG, Fidler JL, Barlow JM, Sheedy SP, Kolbe AB, Harmsen WS, Therneau T, Hansel SL, Becker BD, Loftus EV Jr, Bruining DH
Inflamm Bowel Dis. 2018 Jul 12; 24(8)1815-1825. doi: 10.1093/ibd/izy074.

PMID:
    29668921
    [PubMed - in process]
Related citations


De-novo Inflammatory Bowel Disease After Bariatric Surgery: A Large Case Series.
Braga Neto MB, Gregory M, Ramos GP, Loftus EV Jr, Ciorba MA, Bruining DH, Bazerbachi F, Abu Dayyeh BK, Kushnir VM, Shah M, Collazo-Clavell ML, Raffals LE, Deepak P
J Crohns Colitis. 2018 Mar 28; 12(4)452-457. doi: 10.1093/ecco-jcc/jjx177.

PMID:
    29272375
    [PubMed - indexed for MEDLINE]
Related citations


Isolated Acute Terminal Ileitis Without Preexisting Inflammatory Bowel Disease Rarely Progresses to Crohn's Disease.
Tse CS, Deepak P, Smyrk TC, Raffals LE
Dig Dis Sci. 2017 Dec; 62(12)3557-3562. doi: 10.1007/s10620-017-4803-8.

PMID:
    29064015
    [PubMed - indexed for MEDLINE]
Related citations


Bariatric Surgery Is Acceptably Safe in Obese Inflammatory Bowel Disease Patients: Analysis of the Nationwide Inpatient Sample.
Bazerbachi F, Sawas T, Vargas EJ, Haffar S, Deepak P, Kisiel JB, Loftus EV Jr, Abu Dayyeh BK
Obes Surg. 2018 Apr; 28(4)1007-1014. doi: 10.1007/s11695-017-2955-4.

PMID:
    29019151
    [PubMed - indexed for MEDLINE]
Related citations


Ustekinumab and Anti-Interleukin-23 Agents in Crohn's Disease.
Deepak P, Sandborn WJ
Gastroenterol Clin North Am. 2017 Sep; 46(3)603-626. doi: 10.1016/j.gtc.2017.05.013.

PMID:
    28838418
    [PubMed - indexed for MEDLINE]
Related citations


Transmural Healing and MRI Remission: New Promising Therapeutic Targets in Crohn's Disease.
Buisson A, Hordonneau C, Deepak P
Inflamm Bowel Dis. 2017 Sep; 23(9)E44-E45. doi: 10.1097/MIB.0000000000001219.

PMID:
    28786868
    [PubMed - indexed for MEDLINE]
Related citations


Crohn's disease diagnosis, treatment approach, and management paradigm: what the radiologist needs to know.
Deepak P, Park SH, Ehman EC, Hansel SL, Fidler JL, Bruining DH, Fletcher JG
Abdom Radiol (NY). 2017 Apr; 42(4)1068-1086. doi: 10.1007/s00261-017-1068-9.

PMID:
    28210767
    [PubMed - indexed for MEDLINE]
Related citations


Ustekinumab in treatment of Crohn's disease: design, development, and potential place in therapy.
Deepak P, Loftus EV Jr
Drug Des Devel Ther. 2016; 103685-3698.

PMID:
    27956825
    [PubMed - indexed for MEDLINE]
Related citations


Computed Tomography and Magnetic Resonance Enterography in Crohn's Disease: Assessment of Radiologic Criteria and Endpoints for Clinical Practice and Trials.
Deepak P, Fletcher JG, Fidler JL, Bruining DH
Inflamm Bowel Dis. 2016 Sep; 22(9)2280-8. doi: 10.1097/MIB.0000000000000845.

PMID:
    27508513
    [PubMed - indexed for MEDLINE]
Related citations


Update on Magnetic Resonance Imaging and Ultrasound Evaluation of Crohn's Disease.
Deepak P, Kolbe AB, Fidler JL, Fletcher JG, Knudsen JM, Bruining DH
Gastroenterol Hepatol (N Y). 2016 Apr; 12(4)226-36.

PMID:
    27231453
    [PubMed]
Related citations


Radiological Response Is Associated With Better Long-Term Outcomes and Is a Potential Treatment Target in Patients With Small Bowel Crohn's Disease.
Deepak P, Fletcher JG, Fidler JL, Barlow JM, Sheedy SP, Kolbe AB, Harmsen WS, Loftus EV, Hansel SL, Becker BD, Bruining DH
Am J Gastroenterol. 2016 Jul; 111(7)997-1006. doi: 10.1038/ajg.2016.177.

PMID:
    27166131
    [PubMed - indexed for MEDLINE]
Related citations


Incremental diagnostic yield of chromoendoscopy and outcomes in inflammatory bowel disease patients with a history of colorectal dysplasia on white-light endoscopy.
Deepak P, Hanson GJ, Fletcher JG, Tremaine WJ, Pardi DS, Kisiel JB, Schroeder KW, Wong Kee Song LM, Harmsen WS, Loftus EV Jr, Bruining DH
Gastrointest Endosc. 2016 May; 83(5)1005-12. doi: 10.1016/j.gie.2015.09.021.

PMID:
    26408903
    [PubMed - indexed for MEDLINE]
Related citations


Update on the Medical Management of Crohn's Disease.
Deepak P, Bruining DH
Curr Gastroenterol Rep. 2015 Nov; 17(11)41. doi: 10.1007/s11894-015-0465-x.

PMID:
    26363802
    [PubMed - indexed for MEDLINE]
Related citations


Melanoma and non-melanoma skin cancer in inflammatory bowel disease patients following tumor necrosis factor-α inhibitor monotherapy and in combination with thiopurines: analysis of the Food and Drug Administration Adverse Event Reporting System.
McKenna MR, Stobaugh DJ, Deepak P
J Gastrointestin Liver Dis. 2014 Sep; 23(3)267-71. doi: 10.15403/jgld.2014.1121.233.mrmk.

PMID:
    25267954
    [PubMed - indexed for MEDLINE]
Related citations

Areas of Research Interest

Dr. Deepak's research focuses on utilizing non-invasive methodologies for assessment of disease activity and response to medical therapy in Crohn’s disease.