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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

Inflammatory bowel diseases, Crohn's disease, ulcerative colitis, pouchitis, Crohn's disease of the pouch, indeterminate colitis, immune mediated 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

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 - in process]
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 - in process]
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


Assessing the likelihood of new-onset inflammatory bowel disease following tumor necrosis factor-alpha inhibitor therapy for rheumatoid arthritis and juvenile rheumatoid arthritis.
Krishnan A, Stobaugh DJ, Deepak P
Rheumatol Int. 2015 Apr; 35(4)661-8. doi: 10.1007/s00296-014-3133-9.

PMID:
    25228459
    [PubMed - indexed for MEDLINE]
Related citations


Risk of Myeloid Neoplasms in Inflammatory Bowel Disease Patients Is Linked to Exposure to Thiopurines and Not With Tumor Necrosis Factor-alpha Inhibitors.
Deepak P, Stobaugh DJ
Clin Gastroenterol Hepatol. 2015 Oct; 13(10)1857-8. doi: 10.1016/j.cgh.2014.08.025.

PMID:
    25158928
    [PubMed - indexed for MEDLINE]
Related citations


Effect of tumor necrosis factor-α inhibitors on drug-induced pancreatitis in inflammatory bowel disease.
Stobaugh DJ, Deepak P
Ann Pharmacother. 2014 Oct; 48(10)1282-7. doi: 10.1177/1060028014540869.

PMID:
    24982311
    [PubMed - indexed for MEDLINE]
Related citations


Radiographical evaluation of ulcerative colitis.
Deepak P, Bruining DH
Gastroenterol Rep (Oxf). 2014 Aug; 2(3)169-77. doi: 10.1093/gastro/gou026.

PMID:
    24843072
    [PubMed]
Related citations


Infectious complications of TNF-α inhibitor monotherapy versus combination therapy with immunomodulators in inflammatory bowel disease: analysis of the Food and Drug Administration Adverse Event Reporting System.
Deepak P, Stobaugh DJ, Ehrenpreis ED
J Gastrointestin Liver Dis. 2013 Sep; 22(3)269-76.

PMID:
    24078983
    [PubMed - indexed for MEDLINE]
Related citations


Hospitalizations for vaccine preventable pneumonias in patients with inflammatory bowel disease: a 6-year analysis of the Nationwide Inpatient Sample.
Stobaugh DJ, Deepak P, Ehrenpreis ED
Clin Exp Gastroenterol. 2013; 643-9. doi: 10.2147/CEG.S42514.

PMID:
    23818801
    [PubMed]
Related citations


The metoclopramide black box warning for tardive dyskinesia: effect on clinical practice, adverse event reporting, and prescription drug lawsuits.
Ehrenpreis ED, Deepak P, Sifuentes H, Devi R, Du H, Leikin JB
Am J Gastroenterol. 2013 Jun; 108(6)866-72. doi: 10.1038/ajg.2012.300.

PMID:
    23735907
    [PubMed - indexed for MEDLINE]
Related citations


Alleged isotretinoin-associated inflammatory bowel disease: disproportionate reporting by attorneys to the Food and Drug Administration Adverse Event Reporting System.
Stobaugh DJ, Deepak P, Ehrenpreis ED
J Am Acad Dermatol. 2013 Sep; 69(3)393-8. doi: 10.1016/j.jaad.2013.04.031.

PMID:
    23683730
    [PubMed - indexed for MEDLINE]
Related citations


Ischaemic colitis in rheumatoid arthritis patients receiving tumour necrosis factor-α inhibitors: an analysis of reports to the US FDA Adverse Event Reporting System.
Salk A, Stobaugh DJ, Deepak P, Ehrenpreis ED
Drug Saf. 2013 May; 36(5)329-34. doi: 10.1007/s40264-013-0041-y.

PMID:
    23580194
    [PubMed - indexed for MEDLINE]
Related citations


Ischemic colitis with type I interferons used in the treatment of hepatitis C and multiple sclerosis: an evaluation from the food and drug administration adverse event reporting system and review of the literature.
Salk A, Stobaugh DJ, Deepak P, Ehrenpreis ED
Ann Pharmacother. 2013 Apr; 47(4)537-42. doi: 10.1345/aph.1R526.

PMID:
    23535814
    [PubMed - indexed for MEDLINE]
Related citations


Lubiprostone induced ischemic colitis.
Sherid M, Sifuentes H, Samo S, Deepak P, Sridhar S
World J Gastroenterol. 2013 Jan 14; 19(2)299-303. doi: 10.3748/wjg.v19.i2.299.

PMID:
    23345954
    [PubMed - indexed for MEDLINE]
Related citations


Relationship between mesenteric abnormalities on computed tomography and malignancy: clinical findings and outcomes of 359 patients.
Smith ZL, Sifuentes H, Deepak P, Ecanow DB, Ehrenpreis ED
J Clin Gastroenterol. 2013 May-Jun; 47(5)409-14. doi: 10.1097/MCG.0b013e3182703148.

PMID:
    23188076
    [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.