Patient Portal

Osama Altayar, MD

Instructor, Medicine
Division of Gastroenterology

Specialty Areas

Gastroenterology

Hospital Affiliations

Barnes-Jewish Hospital

Languages

Arabic

Referral Information

Professional Consultation Only

Areas of Clinical Interest

General gastroenterology, iron deficiency anemia, gastrointestinal bleeding, gastric intestinal metaplasia, autoimmune gastritis, pernicious anemia, irritable bowel syndrome, functional gastrointestinal disorders, luminal gastrointestinal disorders

  • Location(s)
  • Education
  • Publication & Research

Location(s)

Location(s)

Center for Advanced Medicine
Gastrointestinal Center

4921 Parkview Place
St. Louis, MO 63110

Office Phone: 314-273-0401
Fax: 314-362-2357

Education

Education

Fellowship: Gastroenterology: Washington University in St. Louis School of Medicine, St. Louis, MO 2019
Residency: Internal Medicine: Allegheny Health Network Medical Education Consortium, Pittsburgh, PA 2016
Fellowship: Evidence-Based Research Program: Mayo Clinic, Rochester, MN 2013
Medical Degree: University of Damascus Faculty of Medicine, Damascus, Syria 2011

Publication & Research

Publication & Research

AGA Institute Rapid Review and Recommendations on the Role of Pre-Procedure SARS-CoV2 Testing and Endoscopy.
Sultan S, Siddique SM, Altayar O, Caliendo AM, Davitkov P, Feuerstein JD, Francis D, Inadomi J, Lim JK, Falck-Ytter Y, Mustafa RA, AGA.
Gastroenterology. 2020 Jul 28; pii: S0016-5085(20)35006-X. doi: 10.1053/j.gastro.2020.07.043.

PMID:
    32735862
    [PubMed - as supplied by publisher]
Related citations


Spotlight: COVID-19 PPE and Endoscopy.
Siddique SM, Sultan S, Lim JK, Altayar O, Davitkov P, Feuerstein JD, Falck-Ytter Y, El-Serag HB, AGA.
Gastroenterology. 2020 Jun 23; pii: S0016-5085(20)34850-2. doi: 10.1053/j.gastro.2020.06.047.

PMID:
    32590006
    [PubMed - as supplied by publisher]
Related citations


AGA Institute Rapid Review of the Gastrointestinal and Liver Manifestations of COVID-19, Meta-Analysis of International Data, and Recommendations for the Consultative Management of Patients with COVID-19.
Sultan S, Altayar O, Siddique SM, Davitkov P, Feuerstein JD, Lim JK, Falck-Ytter Y, El-Serag HB, AGA Institute. Electronic address: ewilson@gastro.org.
Gastroenterology. 2020 Jul; 159(1)320-334.e27. doi: 10.1053/j.gastro.2020.05.001.

PMID:
    32407808
    [PubMed - indexed for MEDLINE]
Related citations


AGA Institute Rapid Recommendations for Gastrointestinal Procedures During the COVID-19 Pandemic.
Sultan S, Lim JK, Altayar O, Davitkov P, Feuerstein JD, Siddique SM, Falck-Ytter Y, El-Serag HB, American Gastroenterological Association. Electronic address: ewilson@gastro.org.
Gastroenterology. 2020 Apr 1; pii: S0016-5085(20)30458-3. doi: 10.1053/j.gastro.2020.03.072.

PMID:
    32247018
    [PubMed - as supplied by publisher]
Related citations


Early vs Late Use of Anti-TNFa Therapy in Adult Patients With Crohn Disease: A Systematic Review and Meta-Analysis.
Hamdeh S, Aziz M, Altayar O, Olyaee M, Murad MH, Hanauer SB
Inflamm Bowel Dis. 2020 Feb 17; pii: izaa031. doi: 10.1093/ibd/izaa031.

PMID:
    32064534
    [PubMed - as supplied by publisher]
Related citations


Prolonged Wireless pH Monitoring in Patients With Persistent Reflux Symptoms Despite Proton Pump Inhibitor Therapy.
Hasak S, Yadlapati R, Altayar O, Sweis R, Tucker E, Knowles K, Fox M, Pandolfino J, Gyawali CP
Clin Gastroenterol Hepatol. 2020 Jan 31; pii: S1542-3565(20)30110-5. doi: 10.1016/j.cgh.2020.01.031.

PMID:
    32007543
    [PubMed - as supplied by publisher]
Related citations


Advancing the Science in Gastric Pre-Neoplasia: Study Design Considerations.
Davitkov P, Altayar O, Shah SC, Gawron AJ, Mustafa RA, Sultan S, Morgan DR
Gastroenterology. 2020 Feb; 158(3)751-759. doi: 10.1053/j.gastro.2019.12.005.

PMID:
    31887260
    [PubMed - indexed for MEDLINE]
Related citations


AGA Technical Review on Gastric Intestinal Metaplasia-Epidemiology and Risk Factors.
Altayar O, Davitkov P, Shah SC, Gawron AJ, Morgan DR, Turner K, Mustafa RA
Gastroenterology. 2020 Feb; 158(3)732-744.e16. doi: 10.1053/j.gastro.2019.12.002.

PMID:
    31816301
    [PubMed - indexed for MEDLINE]
Related citations


AGA Technical Review on Gastric Intestinal Metaplasia-Natural History and Clinical Outcomes.
Gawron AJ, Shah SC, Altayar O, Davitkov P, Morgan D, Turner K, Mustafa RA
Gastroenterology. 2020 Feb; 158(3)705-731.e5. doi: 10.1053/j.gastro.2019.12.001.

PMID:
    31816300
    [PubMed - indexed for MEDLINE]
Related citations


AGA Clinical Practice Guidelines on Management of Gastric Intestinal Metaplasia.
Gupta S, Li D, El Serag HB, Davitkov P, Altayar O, Sultan S, Falck-Ytter Y, Mustafa RA
Gastroenterology. 2020 Feb; 158(3)693-702. doi: 10.1053/j.gastro.2019.12.003.

PMID:
    31816298
    [PubMed - indexed for MEDLINE]
Related citations


Fibrosis Changes in the Placebo Arm of NASH Clinical Trials.
Altayar O, Noureddin N, Thanda Han MA, Murad MH, Noureddin M
Clin Gastroenterol Hepatol. 2019 Oct; 17(11)2387. doi: 10.1016/j.cgh.2019.05.016.

PMID:
    31543242
    [PubMed - indexed for MEDLINE]
Related citations


Physiologic Adaptation or Cirrhotic Cardiomyopathy: It Is Time for New Definitions!
Altayar O, Lisker-Melman M
J Card Fail. 2019 Mar; 25(3)173-175. doi: 10.1016/j.cardfail.2019.01.013.

PMID:
    30716399
    [PubMed - indexed for MEDLINE]
Related citations


Transcatheter aortic valve replacement in patients with pure native aortic valve regurgitation: A systematic review and meta-analysis.
Haddad A, Arwani R, Altayar O, Sawas T, Murad MH, de Marchena E
Clin Cardiol. 2019 Jan; 42(1)159-166. doi: 10.1002/clc.23103.

PMID:
    30350358
    [PubMed - indexed for MEDLINE]
Related citations


Rates of and Factors Associated With Placebo Response in Trials of Pharmacotherapies for Nonalcoholic Steatohepatitis: Systematic Review and Meta-analysis.
Han MAT, Altayar O, Hamdeh S, Takyar V, Rotman Y, Etzion O, Lefebvre E, Safadi R, Ratziu V, Prokop LJ, Murad MH, Noureddin M
Clin Gastroenterol Hepatol. 2019 Mar; 17(4)616-629.e26. doi: 10.1016/j.cgh.2018.06.011.

PMID:
    29913275
    [PubMed - indexed for MEDLINE]
Related citations


Treatment Options for Hirsutism: A Systematic Review and Network Meta-Analysis.
Barrionuevo P, Nabhan M, Altayar O, Wang Z, Erwin PJ, Asi N, Martin KA, Murad MH
J Clin Endocrinol Metab. 2018 Apr 1; 103(4)1258-1264. doi: 10.1210/jc.2017-02052.

PMID:
    29522176
    [PubMed - indexed for MEDLINE]
Related citations


Treatments to Prevent Bone Loss in Functional Hypothalamic Amenorrhea: A Systematic Review and Meta-Analysis.
Altayar O, Al Nofal A, Carranza Leon BG, Prokop LJ, Wang Z, Murad MH
J Endocr Soc. 2017 May 1; 1(5)500-511. doi: 10.1210/js.2017-00102.

PMID:
    29264505
    [PubMed]
Related citations


Biomarkers for bile acid diarrhoea in functional bowel disorder with diarrhoea: a systematic review and meta-analysis.
Valentin N, Camilleri M, Altayar O, Vijayvargiya P, Acosta A, Nelson AD, Murad MH
Gut. 2016 Dec; 65(12)1951-1959. doi: 10.1136/gutjnl-2015-309889.

PMID:
    26347530
    [PubMed - indexed for MEDLINE]
Related citations


Psychological therapies in patients with irritable bowel syndrome: a systematic review and meta-analysis of randomized controlled trials.
Altayar O, Sharma V, Prokop LJ, Sood A, Murad MH
Gastroenterol Res Pract. 2015; 2015549308. doi: 10.1155/2015/549308.

PMID:
    25802514
    [PubMed]
Related citations


Accuracy of urea breath test in Helicobacter pylori infection: meta-analysis.
Ferwana M, Abdulmajeed I, Alhajiahmed A, Madani W, Firwana B, Hasan R, Altayar O, Limburg PJ, Murad MH, Knawy B
World J Gastroenterol. 2015 Jan 28; 21(4)1305-14. doi: 10.3748/wjg.v21.i4.1305.

PMID:
    25632206
    [PubMed - indexed for MEDLINE]
Related citations


Clinical review: Drugs commonly associated with weight change: a systematic review and meta-analysis.
Domecq JP, Prutsky G, Leppin A, Sonbol MB, Altayar O, Undavalli C, Wang Z, Elraiyah T, Brito JP, Mauck KF, Lababidi MH, Prokop LJ, Asi N, Wei J, Fidahussein S, Montori VM, Murad MH
J Clin Endocrinol Metab. 2015 Feb; 100(2)363-70. doi: 10.1210/jc.2014-3421.

PMID:
    25590213
    [PubMed - indexed for MEDLINE]
Related citations

Areas of Research Interest

Epidemiology, knowledge synthesis, systematic reviews, meta-analysis, clinical guidelines, big data, prediction models