KaleemMohammedRizvonMDFACP, FACG

Advanced Endoscopic Interventional, Biliary Tract Disease, Bariatric Medicine

Chief, Division of Gastroenterology and Hepatology Director of Endoscopy, Nassau University Medical Center, East Meadow, NY

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Office
2201 Hempstead Tpke
East Meadow, NY 11554
Phone+1 516-572-6501

Fax+1 516-572-5609
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Education & Training

Nassau Univ Med Ctr2007
Nassau University Medical CenterResidency, Internal Medicine, 1996
Madras Medical CollegeClass of 1991

Certifications & Licensure

NY State Medical License 1996 - 2025
American Board of Internal Medicine Internal Medicine
American Board of Internal Medicine Gastroenterology

Awards, Honors, & Recognition

Fellow of the Year Nassau University Medical Center
Teacher of the Year Nassau University Medical Center

Publications & Presentations

PubMed

1 citations
COVID-19 Exposure Unmasking Systemic Amyloidosis With Hepatic Predominance.
Jose R Russe-Russe, Chiya Abramowitz, James R Pellegrini, Alejandro Alvarez Betancourt, Ricky Cohen, Michael Baldino, Ronald Crandall, Jose Mejia, Kaleem Rizvon, Kagol...> ;Cureus. 2022 Nov 1
Abdominal Pain: A Silent and Unlikely Cause.
Kristen Farraj, Atul Sinha, Aboud Kaliounji, Kaleem Rizvon, Krishnaiyer Subramani> ;Journal of Investigative Medicine High Impact Case Reports. 2021 Sep 18
5 citations
Jejunal diverticulitis in a healthy 91-year-old man
Miral Subhani, Daniel Novick, Kaleem Rizvon> ;BMJ Case Reports. 2018 May 30
Colonic intussusception induced by massive tubular adenoma in a patient post-radiofrequency ablation.
Alex Baronowsky, Seth Lipka, Rinal Patel, Jorge Hurtado-Cordovi, Lester Freedman, Toshimasa J. Clark, Prakash Viswanathan, Kaleem Rizvon, Paul Mustacchia> ;Journal of Gastrointestinal Cancer. 2014 Jun 1
12 citations
Rectal ulcers and massive bleeding after hemorrhoidal band ligation while on aspirin
Shruti Patel, Ghulamullah Shahzad, Kaleem Rizvon, Krishnaiyer Subramani, Prakash Viswanathan, Paul Mustacchia> ;World Journal of Clinical Cases. 2014 Apr 16
6 citations
Synchronous Small Cell Neuroendocrine Carcinoma and Adenocarcinoma of the Colon: A Link for Common Stem Cell Origin?
Seth Lipka, Jorge Hurtado-Cordovi, Boris Avezbakiyev, Lester Freedman, Toshimasa J. Clark, Kaleem Rizvon, Paul Mustacchia> ;ACG Case Reports Journal. 2014 Jan 10
7 citations
A Case of Gastrointestinal Bleeding due to Duodenal Metastasis from a Testicular Choriocarcinoma
Magdalene Vardaros, Miral Subhani, Kaleem Rizvon, Vladimir Gotlieb, Paul Mustacchia, Lester Freedman, Vikas Garg, Jaspreet Singh, Ghulam Siddiqui> ;Journal of Gastrointestinal Cancer. 2013 Jun 1
Unusual finding of Trichuris trichiura on colonoscopy in a patient with a recent change in bowel habits.
Seth Lipka, Rabab Hajar, Lester Freedman, Kaleem Rizvon, Paul Mustacchia> ;Digestive Endoscopy. 2013 Mar 1
6 citations
Obesity, Metabolic Factors, and Colorectal Adenomas: a Retrospective Study in a Racially Diverse New York State Hospital
Seth Lipka, Xi Emily Zheng, Jorge Hurtado-Cordovi, Jaspreet Singh, Evan Levine, Raymond Vlacancich, Bhuma Krishnamachari, Min Kyung Jung, Shuang Fu, Umeko Takeshige, B...> ;Journal of Gastrointestinal Cancer. 2013 Jan 11
8 citations
Diffuse nodular lymphoid hyperplasia of intestine in selective IgG 2 subclass deficiency, autoimmune thyroiditis, and autoimmune hemolytic anemia: case report and lite...
Vikas Garg, Seth Lipka, Kaleem Rizvon, Jaspreet Singh, Sadat Rashid, Paul Mustacchia> ;Journal of Gastrointestinal and Liver Diseases. 2012 Dec 1
7 citations
Germ cell cancer presenting as gastrointestinal bleeding and developing brain metastases: case report and review of the literature
Shuang Fu, Boris Avezbakiyev, Wanqing Zhi, Sreenath Kodali, Kaleem Rizvon, Artur Alaverdian, Lester Freedman, Jose Mejia, Ghulamullah Shahzad, Vladimir Gotlieb> ;Future Oncology. 2012 Nov 14
1 citations
Synchronous Duodenal Carcinoid and Adenocarcinoma of the Colon.
Limin Gao, Seth Lipka, Jorge Hurtado-Cordovi, Boris Avezbakiyev, Alejandro Zuretti, Kaleem Rizvon, Paul Mustacchia> ;World Journal of Oncology. 2012 Oct 29
17 citations
Gastrobronchial fistula following laparoscopic sleeve gastrectomy.
Albin Abraham, Ravi Paul Singh Virdi, Dhyan Rajan, Jaspreet Singh, Paul Mustacchia, Javed Iqbal, Kaleem Rizvon> ;BMJ Case Reports. 2012 Sep 13
2 citations
Toxic megacolon from fulminant Clostridium difficile infection induced by topical silver sulphadiazine
Christopher Tan, Dhyan Rajan, Mitanshu Shah, Shadab Ahmed, Lester Freedman, Kaleem Rizvon, Paul Mustacchia> ;BMJ Case Reports. 2012 Aug 9
1 citations
A Case Report of Eosinophilic Esophagitis Accompanying Hypereosinophilic Syndrome
Mahreema Jawairia, Ghulamullah Shahzad, Jaspreet Singh, Kaleem Rizvon, Paul Mustacchia> ;Case Reports in Gastrointestinal Medicine. 2012 Aug 1
4 citations
A solid organising cryptogenic liver abscess and its association with a colonic tubullovillous adenoma
Christopher Tan, Mitanshu Shah, Dhyan Rajan, Seth Lipka, Shadab Ahmed, Lester Freedman, Kaleem Rizvon, Paul Mustacchia> ;BMJ Case Reports. 2012 Jul 9
2 citations
Mucinous adenocarcinoma of the appendix presenting as intussusception in 27 year old female.
Ghulam Siddiqui, Seth Lipka, Lester Freedman, Umeko Takeshige, Kaleem Rizvon, Paul Mustacchia> ;Journal of Gastrointestinal Oncology. 2012 Jun 13
6 citations
Successful Management of a Gastric Sleeve Leak with an Endoscopic Stent
Albin Abraham, Kaleem Rizvon, Jaspreet Singh, Ghulam Siddiqui, Apsara Prasad, Sadat Rashid, Magdalene Vardaros, Vikas Garg, Krishnaiyer Subramani, Paul Mustacchia> ;Case Reports in Gastrointestinal Medicine. 2012 May 17
5 citations
Endoscopic Evaluation of Symptomatic Patients following Bariatric Surgery: A Literature Review
Miral Subhani, Kaleem Rizvon, Paul Mustacchia> ;Diagnostic and Therapeutic Endoscopy. 2012 May 15
5 citations
Cytomegalovirus infection of the colon presenting as a mass-like lesion.
Christopher Tan, Magdalene Vardaros, Apsara Prasad, Sadat Rashid, Keith Dahl, Duane Moise, Wondwoosen Gebre, Kaleem Rizvon, Paul Mustacchia> ;Case Reports in Gastroenterology. 2012 May 10
12 citations
Transient Psychotic Episode Induced by Helicobacter pylori Triple Therapy Treatment.
Mitanshu Shah, Miral Subhani, Kaleem Rizvon, Paul Mustacchia> ;Case Reports in Gastroenterology. 2012 May 1
8 citations
Pain from a Bullet Lingers on: An Uncommon Case of Lead Toxicity.
Albin Abraham, Jaspreet Singh, Paul Mustacchia, Kaleem Rizvon> ;Case Reports in Gastroenterology. 2012 May 1
18 citations
Blastocystis hominis and Endolimax nana Co-Infection Resulting in Chronic Diarrhea in an Immunocompetent Male
Mitanshu Shah, Christopher Tan, Dhyan Rajan, Shadab Ahmed, Krishnaiyer Subramani, Kaleem Rizvon, Paul Mustacchia> ;Case Reports in Gastroenterology. 2012 May 1
4 citations
Unexplained findings of kayser-fleischer-like rings in a patient with cryptogenic cirrhosis.
Mahreema Jawairia, Miral Subhani, Ghulam Siddiqui, Apsara Prasad, Ghulamullah Shahzad, Kaleem Rizvon, Paul Mustacchia> ;Case Reports in Gastrointestinal Medicine. 2012 Mar 15
8 citations
Endoscopic management of a primary duodenal carcinoid tumor.
Albin Abraham, Jaspreet Singh, Ghulam Siddiqui, Apsara Prasad, Sadat Rashid, Magdalene Vardaros, Vikas Garg, Kaleem Rizvon, Krishnaiyer Subramani, Paul Mustacchia> ;Case Reports in Gastroenterology. 2012 Jan 1
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Professional Memberships

American College of Physicians - ACP
Fellow
American College of Gastroenterology - ACG
Fellow

Hospital Affiliations

Nassau University Medical CenterEast Meadow, New York