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
  • Financial Disclosures

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

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 - in process]
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, , on behalf of the ACG FDA Related Matters Committee.
Am J Gastroenterol. 2019 Apr 26; doi: 10.14309/ajg.0000000000000215.

PMID:
    31033521
    [PubMed - as supplied by publisher]
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 Mar 12; pii: S1542-3565(19)30256-3. doi: 10.1016/j.cgh.2019.02.045.

PMID:
    30876963
    [PubMed - as supplied by publisher]
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 Feb 27; pii: izz030. doi: 10.1093/ibd/izz030.

PMID:
    30810748
    [PubMed - as supplied by publisher]
Related citations


Successful Treatment of Pyoderma Gangrenosum with Concomitant Tofacitinib and Infliximab.
Gregory MH, Ciorba MA, Deepak P, Christophi GP
Inflamm Bowel Dis. 2019 Feb 8; doi: 10.1093/ibd/izz015.

PMID:
    30753456
    [PubMed - as supplied by publisher]
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 - 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. 2019 Mar 14; 25(4)767-774. doi: 10.1093/ibd/izy302.

PMID:
    30295784
    [PubMed - in process]
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 - in process]
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 - in process]
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 - 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

Financial Disclosures

Financial Disclosures

Disclosure of Financial Interests with Industry

Washington University and its physicians and health professionals are committed to ensuring integrity and objectivity in medical decision-making. Some of our physicians and health professionals work collaboratively with pharmaceutical, medical device or other medical care related companies to develop innovative ideas and products that can improve health care delivery and clinical outcomes for patients. In some instances, our physicians and health professionals have an ownership or potential ownership interest in a commercial company; and/or are paid by a commercial company to provide advice on product design or to speak about the use of medications, devices, equipment or procedures. These payments may include: a) compensation for consulting and speaking engagements, b) equity, and/or c) royalties for products invented by our faculty. Any payments to Washington University physicians or health professionals must be based on tangible services and may not exceed fair market value for their work. In addition to disclosure on this website, physicians and health professionals earning more than $10,000 per year must disclose their corporate financial relationship in writing to patients when prescribing or using that company's products.

This physician reported the following financial interests during calendar year 2018:

Company Name: Abbvie

Royalties:

Equity: No

Consulting/Advisory Board:

Speaker Fees: $20,000 - $39,999

Reporting Date: May 01, 2019

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.