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.

  • Location(s)
  • Education
  • Publication & Research

Location(s)

Location(s)

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

Reply to the Letter to the Editor: Derivation and Internal Validation of a Clinical Prediction Tool to Predict Nonalcoholic Fatty Liver Disease in Patients With Crohn's Disease.
McHenry S, Ciorba MA, Deepak P
Inflamm Bowel Dis. 2020 May 12; 26(6)e46. doi: 10.1093/ibd/izaa043.

PMID:
    32130410
    [PubMed - in process]
Related citations


Multiphase Computed Tomographic Enterography: Diagnostic Yield and Efficacy in Patients With Suspected Small Bowel Bleeding.
Deepak P, Pundi KN, Bruining DH, Fidler JL, Barlow JM, Hansel SL, Harmsen WS, Wells ML, Fletcher JG
Mayo Clin Proc Innov Qual Outcomes. 2019 Dec; 3(4)438-447. doi: 10.1016/j.mayocpiqo.2019.09.001.

PMID:
    31993562
    [PubMed]
Related citations


Imaging Findings of Ileal Inflammation at Computed Tomography and Magnetic Resonance Enterography: What do They Mean When Ileoscopy and Biopsy are Negative?
Nehra AK, Sheedy SP, Wells ML, VanBuren WM, Hansel SL, Deepak P, Lee YS, Bruining DH, Fletcher JG
J Crohns Colitis. 2020 May 21; 14(4)455-464. doi: 10.1093/ecco-jcc/jjz122.

PMID:
    31960900
    [PubMed - in process]
Related citations


Derivation and Internal Validation of a Clinical Prediction Tool to Predict Nonalcoholic Fatty Liver Disease in Patients With Crohn's Disease.
McHenry S, Tirath A, Tsai R, Sharma Y, Flores AG, Davidson NO, Fowler KJ, Ciorba MA, Deepak P
Inflamm Bowel Dis. 2020 Jan 7; pii: izz324. doi: 10.1093/ibd/izz324.

PMID:
    31907542
    [PubMed - as supplied by publisher]
Related citations


Volvulus of the ileal pouch-anal anastomosis: a meta-narrative systematic review of frequency, diagnosis, and treatment outcomes.
Jawoosh M, Haffar S, Deepak P, Meyers A, Lightner AL, Larson DW, Raffals LH, Murad MH, Buttar N, Bazerbachi F
Gastroenterol Rep (Oxf). 2019 Dec; 7(6)403-410. doi: 10.1093/gastro/goz045.

PMID:
    31857902
    [PubMed]
Related citations


Impact of Bariatric Surgery on the Long-term Disease Course of Inflammatory Bowel Disease.
Braga Neto MB, Gregory MH, Ramos GP, Bazerbachi F, Bruining DH, Abu Dayyeh BK, Kushnir VM, Raffals LE, Ciorba MA, Loftus EV, Deepak P
Inflamm Bowel Dis. 2019 Oct 15; pii: izz236. doi: 10.1093/ibd/izz236.

PMID:
    31613968
    [PubMed - as supplied by publisher]
Related citations


Magnetic resonance enterography features of small bowel Crohn's disease activity: an inter-rater reliability study of small bowel active inflammation in clinical practice setting.
Tsai R, Mintz A, Lin M, Mhlanga J, Chiplunker A, Salter A, Ciorba M, Deepak P, Fowler K
Br J Radiol. 2019 Jul; 92(1099)20180930. doi: 10.1259/bjr.20180930.

PMID:
    31141389
    [PubMed - indexed for MEDLINE]
Related citations


The Role of the Radiologist in Determining Disease Severity in Inflammatory Bowel Diseases.
Deepak P, Axelrad JE, Ananthakrishnan AN
Gastrointest Endosc Clin N Am. 2019 Jul; 29(3)447-470. doi: 10.1016/j.giec.2019.02.006.

PMID:
    31078247
    [PubMed - indexed for MEDLINE]
Related citations


Beyond the Label: Ensuring That Drug Benefits Outweigh Risks in the Food and Drug Administration's Risk Evaluation and Mitigation Strategy Program.
Epstein MS, Shah ED, Deepak P, Kushnir VM
Am J Gastroenterol. 2019 Jul; 114(7)1017-1019. doi: 10.14309/ajg.0000000000000215.

PMID:
    31033521
    [PubMed - indexed for MEDLINE]
Related citations


Crohn's Disease Is Associated With an Increased Prevalence of Nonalcoholic Fatty Liver Disease: A Cross-Sectional Study Using Magnetic Resonance Proton Density Fat Fraction Mapping.
McHenry S, Sharma Y, Tirath A, Tsai R, Mintz A, Fraum TJ, Salter A, Browning JD, Flores AG, Davidson NO, Fowler KJ, Ciorba MA, Deepak P
Clin Gastroenterol Hepatol. 2019 Dec; 17(13)2816-2818. doi: 10.1016/j.cgh.2019.02.045.

PMID:
    30876963
    [PubMed - in process]
Related citations


Efficacy of Vedolizumab for Refractory Pouchitis of the Ileo-anal Pouch: Results From a Multicenter US Cohort.
Gregory M, Weaver KN, Hoversten P, Hicks SB, Patel D, Ciorba MA, Gutierrez AM, Beniwal-Patel P, Palam S, Syal G, Herfarth HH, Christophi G, Raffals L, Barnes EL, Deepak P
Inflamm Bowel Dis. 2019 Aug 20; 25(9)1569-1576. doi: 10.1093/ibd/izz030.

PMID:
    30810748
    [PubMed - indexed for MEDLINE]
Related citations


Successful Treatment of Pyoderma Gangrenosum with Concomitant Tofacitinib and Infliximab.
Gregory MH, Ciorba MA, Deepak P, Christophi GP
Inflamm Bowel Dis. 2019 Jun 18; 25(7)e87-e88. doi: 10.1093/ibd/izz015.

PMID:
    30753456
    [PubMed - indexed for MEDLINE]
Related citations


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 - indexed for MEDLINE]
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. 2019 Mar 14; 25(4)767-774. doi: 10.1093/ibd/izy302.

PMID:
    30295784
    [PubMed - indexed for MEDLINE]
Related citations


Anti-Tumour 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. 2019 Feb 1; 13(2)182-188. doi: 10.1093/ecco-jcc/jjy148.

PMID:
    30256926
    [PubMed - indexed for MEDLINE]
Related citations


Novel Imaging Approaches in Inflammatory Bowel Diseases.
Deepak P, Fowler KJ, Fletcher JG, Bruining DH
Inflamm Bowel Dis. 2019 Jan 10; 25(2)248-260. doi: 10.1093/ibd/izy239.

PMID:
    30010908
    [PubMed - indexed for MEDLINE]
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 - indexed for MEDLINE]
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 - indexed for MEDLINE]
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 - indexed for MEDLINE]
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

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.