Changcheng Zhu

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First Name

Changcheng

Last Name

Zhu

NPI

1407936909

Faculty ID

10578

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Full Time

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Adult

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Male

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Thoracic pathology, Head &amp; Neck Pathology, Gynecological Pathology and Lung Transplant Pathology<br /><quillbot-extension-portal></quillbot-extension-portal>

Research Focus

Lung cancer<br />

Elsevier Profile

EMR ID

4827

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Shiu M. Young

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First Name

Shiu

Last Name

Young

NPI

1467742726

Faculty ID

14110

CMO Specialties

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Employment Status

Full Time

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Adult

Department

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Female

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Off

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Elsevier Profile

EMR ID

5826

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David Weithorn

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First Name

David

Last Name

Weithorn

NPI

1033504303

Faculty ID

17257

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Full Time

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Adult

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Male

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Off

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Clinical Focus

Dr. Weithorn focuses on using minimally invasive techniques, including robotic surgery, to treat a wide range of surgical diseases, including gallstones (gallbladder removal), hiatal hernia repair, anti-reflux surgery, diverticulitis, colon cancer, ventral and inguinal hernias including complex hernias, recurrent ventral and inguinal hernias, and neurectomy procedures for chronic inguinal pain after inguinal hernia repair.

Research Focus

Dr. Weithorn is interested in outcomes-based research using minimally invasive surgical techniques to reduce morbidity and speed recovery for a wide range of general surgical conditions, especially acute and/or emergent surgical conditions. H

Elsevier Profile

EMR ID

78060

Biography

<p>David Weithorn, MD, is a general surgeon and Assistant Professor, Surgery at Montefiore Einstein. A fellowship-trained minimally invasive general surgeon, Dr. Weithorn focuses on using minimally invasive techniques, including robotic surgery, to treat a wide range of surgical diseases, including gallstones (gallbladder removal), hiatal hernia repair, anti-reflux surgery, diverticulitis, colon cancer, ventral and inguinal hernias including complex hernias, recurrent ventral and inguinal hernias, and neurectomy procedures for chronic inguinal pain after inguinal hernia repair.</p><p>After receiving his Bachelor of Science from University of Florida in 2011, Dr. Weithorn attended the Herbert Wertheim College of Medicine, earning his Doctor of Medicine in 2015. He completed his residency in general surgery at Montefiore Medical Center in 2020, then pursued fellowship in robotic/minimally invasive surgery at Hackensack University Medical Center, training with pioneers in robotic surgery.</p><p>Dr. Weithorn is interested in outcomes-based research using minimally invasive surgical techniques to reduce morbidity and speed recovery for a wide range of general surgical conditions, especially acute and/or emergent surgical conditions. He has shared his work through peer-reviewed journal articles and national presentations.</p><p>Dr. Weithorn is board certified by the American Board of Surgery and is a member of the American College of Surgeons and the Society of American Gastrointestinal and Endoscopic Surgeons.</p>

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Esperanza Villanueva-Siles

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First Name

Esperanza

Last Name

Villanueva-Siles

NPI

1518047018

Faculty ID

10058

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Full Time

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Adult

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Female

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CHAM Provider

Off

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Elsevier Profile

EMR ID

4730

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Berrin Ustun

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First Name

Berrin

Last Name

Ustun

NPI

1568789394

Faculty ID

13617

CMO Specialties

Clinical Terms

Employment Status

Full Time

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Adult

Department

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Female

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Phone

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Clinical Profile

CHAM Provider

Off

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Elsevier Profile

EMR ID

5648

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Gitit Tomer

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First Name

Gitit

Last Name

Tomer

NPI

1295765618

Faculty ID

11963

CMO Specialties

Clinical Terms

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Full Time

Patient Type

Pediatric

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Female

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Professional Interests

<p><span><span>Dr. Tomer is the director of the Pediatric Inflammatory Bowel Disease program at the Children's Hospital at Montefiore.&nbsp;</span></span>She is Associate Professor of Clinical Pediatrics. &nbsp;Dr. Tomer graduated from Sackler School of Medicine, Tel- Aviv, Israel. Dr. Tomer completed her Pediatric Residency at New York University School of Medicine and her Pediatric Gastroenterogy and Nutrition Fellowship at Mount Sinai Medical Center, New York. Dr Tomer was Assistant Professor of Pediatrics in the Division of Pediatric Gastroenterology at Cincinnati Children&rsquo;s Hospital for four years prior to joining the Pediatric GI Division at The Children&rsquo;s Hospital at Montefiore in 2009. Dr. Tomer&rsquo;s research interests include inflammatory bowel diseases, quality improvement work, and capsule endoscopy. &nbsp;</p>

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On

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Elsevier Profile

PubMed.gov URL

Selected Publications

<p>1. Obtaining research biopsies during pediatric colonoscopy: Safety and adverse events. Mait-Kaufman J, Kahn S, Tomer G. World J Gastrointest Endosc. 2015 Jun 25;7(7):736-40. doi: 10.4253/wjge.v7.i7.736.</p>
<p>2.&nbsp; Improving Nonattendance at Outpatient Pediatric Endoscopy Unit of a Tertiary Center. Kogan-Liberman D, Rivas Y, Thompson J, Tomer G. J Pediatr Gastroenterol Nutr. 2015 Aug;61(2):234-7. doi: 10.1097/MPG.0000000000000791.</p>
<p>3. Improving the timeliness of procedures in a pediatric endoscopy suite. Tomer G, Choi S, Montalvo A, Sutton S, Thompson J, Rivas Y.&nbsp; Pediatrics. 2014 Feb;133(2):e428-33. doi: 10.1542/peds.2013-2316. Epub 2014 Jan 20.</p>
<p>4. Improved outcomes with quality improvement interventions in pediatric inflammatory bowel disease. Samson CM, Morgan P, Williams E, Beck L, Addie-Carson R, McIntire S, Booth A, Mendez E, Luzader C, Tomer G, Saeed S, Donovan E, Bucuvalas J, Denson LA. J Pediatr Gastroenterol Nutr. 2012 Dec;55(6):679-88. doi: 10.1097/MPG.0b013e318262de16.</p>
<p>5.Factors that determine risk for surgery in pediatric patients with Crohn's disease. Schaefer ME, Machan JT, Kawatu D, Langton CR, Markowitz J, Crandall W, Mack DR, Evans JS, Pfefferkorn MD, Griffiths AM, Otley AR, Bousvaros A, Kugathasan S, Rosh JR, Keljo DJ, Carvalho RS, Tomer G, Mamula P, Kay MH, Kerzner B, Oliva-Hemker M, Kappelman MD, Saeed SA, Hyams JS, Leleiko NS. Clin Gastroenterol Hepatol. 2010 Sep;8(9):789-94. doi: 10.1016/j.cgh.2010.05.021. Epub 2010 May 31.</p>
<p>&nbsp;6. Extraintestinal manifestations of pediatric inflammatory bowel disease and their relation to disease type and severity. Dotson JL, Hyams JS, Markowitz J, LeLeiko NS, Mack DR, Evans JS, Pfefferkorn MD, Griffiths AM, Otley AR, Bousvaros A, Kugathasan S, Rosh JR, Keljo D, Carvalho RS, Tomer G, Mamula P, Kay MH, Kerzner B, Oliva-Hemker M, Langton CR, Crandall W. J Pediatr Gastroenterol Nutr. 2010 Aug;51(2):140-5. doi: 10.1097/MPG.0b013e3181ca4db4.</p>
<p>7.&nbsp; Outcome following infliximab therapy in children with ulcerative colitis. Hyams JS, Lerer T, Griffiths A, Pfefferkorn M, Stephens M, Evans J, Otley A, Carvalho R, Mack D, Bousvaros A, Rosh J, Grossman A, Tomer G, Kay M, Crandall W, Oliva-Hemker M, Keljo D, LeLeiko N, Markowitz J; Pediatric Inflammatory Bowel Disease Collaborative Research Group. Am J Gastroenterol. 2010 Jun;105(6):1430-6. doi: 10.1038/ajg.2009.759. Epub 2010 Jan 26.</p>
<p>&nbsp;8. Polymorphisms in the IBD5 locus are associated with Crohn disease in pediatric Ashkenazi Jewish patients. Tomer G, Wetzler G, Keddache M, Denson LA. J Pediatr Gastroenterol Nutr. 2009 May;48(5):531-7. doi: 10.1097/MPG.0b013e318183138a.</p>
<p>9. Granulocyte-macrophage colony-stimulating factor autoantibodies in murine ileitis and progressive ileal Crohn's disease. Han X, Uchida K, Jurickova I, Koch D, Willson T, Samson C, Bonkowski E, Trauernicht A, Kim MO,Tomer G, Dubinsky M, Plevy S, Kugathsan S, Trapnell BC, Denson LA. Gastroenterology. 2009 Apr;136(4):1261-71, e1-3. doi: 10.1053/j.gastro.2008.12.046. Epub 2008 Dec 24.</p>
<p>10. Loci on 20q13 and 21q22 are associated with pediatric-onset inflammatory bowel disease. Kugathasan S, Baldassano RN, Bradfield JP, Sleiman PM, Imielinski M, Guthery SL, Cucchiara S, Kim CE, Frackelton EC, Annaiah K, Glessner JT, Santa E, Willson T, Eckert AW, Bonkowski E, Shaner JL, Smith RM, Otieno FG, Peterson N, Abrams DJ, Chiavacci RM, Grundmeier R, Mamula P,Tomer G, Piccoli DA, Monos DS, Annese V, Denson LA, Grant SF, Hakonarson H. Nat Genet. 2008 Oct;40(10):1211-5. doi: 10.1038/ng.203. Epub 2008 Aug 31.</p>
<p>&nbsp;11. Genetic variants in the autophagy pathway contribute to paediatric Crohn's disease. Peterson N, Guthery S, Denson L, Lee J, Saeed S, Prahalad S, Biank V, Ehlert R, Tomer G, Grand R, Rudolph C, Kugathasan S. Gut. 2008 Sep;57(9):1336-7; author reply 1337. doi: 10.1136/gut.2008.152207. No abstract available.</p>
<p>&nbsp;12. Electronic clinical challenges and images in GI. Meckel's diverticulum. Zeisler B, Moyer SM, Farrell M, Collins MH, Tomer G. Gastroenterology. 2008 Apr;134(4):e3-4. doi: 10.1053/j.gastro.2008.02.039. No abstract available. Erratum in: Gastroenterology. 2008 Jul;135(1):326.</p>
<p>13.NOD2/CARD15 variants are associated with lower weight at diagnosis in children with Crohn's disease. Tomer G, Ceballos C, Concepcion E, Benkov KJ. Am J Gastroenterol. 2003 Nov;98(11):2479-84.</p>
<p>14. Disorders of bile formation and biliary transport. Tomer G, Shneider BL. Gastroenterol Clin North Am. 2003 Sep;32(3):839-55, vi. Review.</p>
<p>15. Differential developmental regulation of rat liver canalicular membrane transporters Bsep and Mrp2. Tomer G, Ananthanarayanan M, Weymann A, Balasubramanian N, Suchy FJ. Pediatr Res. 2003 Feb;53(2):288-94.</p>
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EMR ID

5262

Biography

<p>Gitit Tomer, MD, is Director of the Pediatric Inflammatory Bowel Disease (IBD) Program at Children&rsquo;s Hospital at Montefiore (CHAM) and Professor of Pediatrics at our Albert Einstein College of Medicine. Dr. Tomer has been a member of the Montefiore team since 2009, with a clinical focus on inflammatory bowel disease, performance improvement and capsule endoscopy.</p><p>Dr. Tomer received her medical degree from Sackler School of Medicine, Tel-Aviv University, in 1995. She completed her Pediatric internship and residency at New York University School of Medicine in 1998, and went on to complete her Pediatric Gastroenterology and Nutrition fellowship at Mount Sinai Medical Center in 2001.</p><p>Dr. Tomer&rsquo;s focus on IBD, performance improvement and endoscopy extend to her research interests. She is the CHAM physician leader of ImproveCareNow, a national collaborative that champions improved care for children and youth with Crohn&rsquo;s disease and ulcerative colitis. Her research in pediatric IBD examines many facets, extending from the racial differences in initial presentation, early treatment and 1-year outcomes in pediatric Crohn&rsquo;s disease, to differences in satisfaction with work-life balance among pediatric gastroenterologists. Dr. Tomer&rsquo;s work has been published in a number of reviewed journals, books, review articles, and abstracts.</p><p>Dr. Tomer is board certified by the American Board of Pediatrics in Pediatric Gastroenterology. She is a member of the American Gastroenterological Association (AGA) and the Crohn's & Colitis Foundation of America (CCFA), and serves as the chair of the Professional Development Committee of the North American Society for Pediatric Gastroenterology, Hepatology and Nutrition (NASPGHAN).</p>

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Aaron Zev Tokayer

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First Name

Aaron

Last Name

Tokayer

NPI

1336220755

Faculty ID

704

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Per Diem

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Adult

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Male

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Professional Interests

<p>Dr. Tokayer received his B.A. in from Yeshiva College and his M.D. from Albert Einstein College of Medicine of Yeshiva University. &nbsp;He completed an internship and residency at the Bronx Municipal Hospital Center and GI and Hepatology fellowship at Johns Hopkins Medical Center. He received an MHS degree in Clinical Epidemiology from Johns Hopkins School of Public Health. Dr. Tokayer then joined the Montefiore GI Faculty in 1992. He has been involved in the spectrum of clinical patient care, endoscopic interventions and teaching in the GI fellowship program. His areas of interest include clinical practice, patient care and education, endoscopic procedures and interventions, functional GI and motility disorders. He is Director of the GI Motility Lab where studies such as Esophageal Manometry,&nbsp; Esophageal Acid Monitoring and Impedance Testing, Ano-rectal Manometry and Defecatory Testing, Hydrogen Breath Testing for Bacterial overgrowth and Carbohydrate Maldigestion , and studies of gastric and intestinal transit. He works closely with colleagues of the Department of Radiology and Nuclear Medicine as well as the Department of Surgery in diagnosing and treating GI motility disorders.</p>

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Elsevier Profile

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Peter Kjeld Slotwiner-Nie

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First Name

Peter

Last Name

Slotwiner-Nie

NPI

1508812405

Faculty ID

4541

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Employment Status

Full Time

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Adult

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Male

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Clinical Profile

CHAM Provider

Off

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EMR ID

4136

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Howard I. Sherman

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First Name

Howard

Last Name

Sherman

NPI

1164439022

Faculty ID

5838

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Full Time

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Adult

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Male

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Clinical Profile

CHAM Provider

Off

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Clinical Focus

Colon cancer screening<quillbot-extension-portal></quillbot-extension-portal>

Research Focus

Colon cancer screening<quillbot-extension-portal></quillbot-extension-portal>

EMR ID

3483

Biography

<p>Howard I. Sherman, MD, is an attending physician and Adjunct Associate Clinical Professor, Gastroenterology at Montefiore Einstein. His clinical focus centers on colon cancer screening.</p><p>After earning his Doctor of Medicine at Einstein in 1973, Dr. Sherman began his postdoctoral training at Emory University. There, he completed his medical internship in 1974, his internal medicine residency in 1976 and a digestive diseases fellowship in 1978.</p><p>Building on his clinical focus, Dr. Sherman&rsquo;s research is focused on colon cancer screening.</p><p>Dr. Sherman is board certified in Gastroenterology and is a Diplomat of the National Board of Medical Examiners and the American Board of Internal Medicine. He is a member of several professional organizations, including the American Gastroenterology Association, the American College of Gastroenterology, the American Society for Gastrointestinal Endoscopy and the American Association for the Study of Liver Disease.</p>

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Jonathan M. Schwartz

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First Name

Jonathan

Last Name

Schwartz

NPI

1215945738

Faculty ID

648

CMO Specialties

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Employment Status

Full Time

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Adult

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Male

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Professional Interests

<p>Jonathan M. Schwartz is a board Certified Transplant Hepatologist. &nbsp;He is a graduate of Tel Aviv University, Sackler School of Medicine. He was an Internal Medicine Resident at Albert Einstein College of Medicine and a Fellow in Gastroenterology/Transplant Hepatology at the University of Washington in Seattle. &nbsp;He returned to New York in 2011 from Portland, Oregon where he served as an Associate Professor of Medicine at Oregon Health and Sciences University.</p>
<p>Dr. &nbsp;Schwartz has an interest in treating patients with acute and chronic liver diseases including those patients with advanced liver diseases who require liver transplantation.</p>
<p>He has a special interest in the multidisciplinary care of patients with liver tumors.</p>

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Elsevier Profile

Selected Publications

<p><strong><br /></strong></p>
<ul>
<li>Estes JD, Stolpman D, Olyaei A, Ham JM, <strong>Schwartz JM</strong>, Orloff SL.&nbsp; High Prevalence of Potentially Hepatotoxic Herbal Supplement Use in Fulminant Hepatic Failure Patients. Arch Surg. 2003;138(8):852-8.</li>
<li><strong>Schwartz JM</strong>, Beymer C, Althaus SJ, Larson AM, Zaman A, Glickerman D, Kowdley KV.&nbsp; Cardiopulmonary Consequences of Transjugular Intrahepatic Portosystemic Shunts: Role of Increased Pulmonary Artery Pressure. J Clin Gastroenterol 2004;38(7):590-594.</li>
<li>Lim LL, Scarborough J, Thorne J, Graham E, Kempen J, Mackensen F, Nguyen Q D, Prabriputaloong T, Read R, Suhler EB, <strong>Schwartz JM</strong>, &nbsp;Smith JR. Uveitis in Patients with Autoimmune Hepatitis. Am J Ophthalmol. 2009;147(2):332-338.</li>
<li>O&rsquo;Glasser AY, Scott DA, Corless CL, Zaman A, Sasaki A, Gopal DV, Rayhill SC, Orloff SL, Ham JM, Rabkin JM, Flora K, Davies CH, Broberg CS, and <strong>Schwartz JM.</strong>Hepatic and Cardiac Iron Overload Among Patients with End-Stage Liver Disease Referred for Liver Transplantation. Clinical Transplantation. Clin Transplant. 2010 Sep-Oct;24(5):643-51.</li>
<li>Kanwal F, Befeler A, Chari R, Marrero J, Kahn J, Afdhal N, Morgan T, Roberts L, Mohanty SR, <strong>Schwartz J</strong>, Van Thiel D, Hassanein TI, Li J, Zeringue A, DiBisceglie A. Rate of Potentially Curative Treatment in Patients with Hepatocellular Carcinoma.&nbsp; Aliment Pharmacol Ther. 2012 Aug;36(3):257-65.</li>
<li>Bichoupan K1,&nbsp;<strong>Schwartz JM,</strong>&nbsp;Martel-Laferriere V,&nbsp;Giannattasio ER,&nbsp;Marfo K,&nbsp;Odin JA,&nbsp;Liu LU,&nbsp;Schiano TD,&nbsp;Perumalswami P,&nbsp;Bansal M,&nbsp;Gaglio PJ,&nbsp;Kalia H,Dieterich DT,&nbsp;Branch AD,&nbsp;Reinus JF. Effect of Fibrosis on Adverse Events in Patients with Hepatitis C Treated with Telaprevir. Aliment Pharmacol Ther.&nbsp;2014;39(2):209-16.</li>
<li><strong>Schwartz J</strong> and Carithers RL.&nbsp; Epidemiology and Etiologic Associations of Primary Hepatocellular Carcinoma.&nbsp; In Rose BD, editor. Up to date in Gastroenterology and Hepatology.&nbsp; Up to date, Inc. Wellesley, MA, Updated 2014.</li>
<li><strong>Schwartz JM </strong>and Carithers RL, Jr.&nbsp; Clinical features, diagnosis, and screening for primary hepatocellular carcinoma.&nbsp; Up to date in Gastroenterology and Hepatology.&nbsp; Up to date, Inc. Wellesley, MA, Updated 2014.</li>
<li>Curley SA, Stewart KE, <strong>Schwartz JM</strong>, Carthers RL, Jr.&nbsp; Nonsurgical therapies for localized hepatocellular carcinoma.&nbsp; Up to date, Inc. Wellesley, MA, Updated 2014.<strong>&nbsp;</strong></li>
<li><strong>Schwartz JM</strong>.&nbsp; Approach to the patient with a focal liver lesion.&nbsp; Up to date Inc Gastroenterology and Hepatology.&nbsp; Up to date, Inc. Wellesley, MA, Updated 2014.</li>
<li>Hartwell L and <strong>Schwartz JM.&nbsp; </strong>AsymptomaticLiver Chemistry Abnormalities. Journal of Clinical Outcomes Management. 2009; 16 (11): 525-34.</li>
<li>Urquhart J<strong>, Schwartz, JM.</strong> Hepatocellular Carcinoma Surveillance in a Western Population with Hepatitis B. Current Hepatitis Reports, 2011.</li>
<li><strong>Schwartz, JM </strong>and Reinus JF.&nbsp; Prevalence and Natural History of Alcoholic Liver Disease.&nbsp; Clinics in Liver Disease. 2012; 16 (4): 659-66.</li>
</ul>
<p>&nbsp;</p>

EMR ID

3842

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