Our GI Team

Ronald D. Szjkowski
Ronald D. Szyjkowski, MD
Chief, Division of Gastroenterology
Muhammad Osman Arif, MD
Muhammad Osman Arif, MD
315 464-5804

Education & Fellowships

  • Fellowship: SUNY Upstate Medical University, 2015, Gastroenterology
  • Residency: SUNY Upstate Medical University, 2012, Internal Medicine
  • MBBS: Aga Khan University, Karachi, Pakistan, 2008

Diseases/Specialties/Treatments

Internal Medicine; Gastroenterology; AVM - GI Vessel; Abdominal Pain; Achalasia; Acute Pancreatitis; more

Research Interests

  • Clinical Gastroenterology research

Clinical Interests

  • General Gastroenterology and Hepatology.

    Biliary and pancreatic diseases


David G Heisig, MD
David G Heisig, MD
315 464-1600

Education & Fellowships

  • Fellowship: SUNY Health Science Center at Syracuse, 1991
  • Residency: SUNY Health Science Center at Syracuse, 1986
  • Internship: SUNY Health Science Center at Syracuse, 1984
  • MD: Albany Medical College, NY, 1983

Diseases/Specialties/Treatments

Gastroenterology; Internal Medicine; Gastrointestinal and Liver Diseases; Capsule Endoscopy; Colonoscopy; EGD (Upper Endoscopy); more

Savio John, MD
Savio John, MD
315 464-1616

Education & Fellowships

  • Fellowship: Massachusetts General Hospital/Havard Medical School, 2012, Transplant Hepatology
  • Fellowship: SUNY Upstate Medical University, 2011, Gastroenterology
  • Residency: SUNY Upstate Medical University, 2008, Internal Medicine
  • MD: St. John's Medical College, Bangalore University, India, 2004

Diseases/Specialties/Treatments

Internal Medicine; Gastroenterology; Alcoholic Fatty Liver; Ascites, Malignant; Chronic Hepatitis; Esophageal Varices; more

Divey Manocha, MD
Divey Manocha, MD
315 464-8668

Education & Fellowships

  • Fellowship: SUNY Upstate Medical University, 2015, Gastroenterology and Hepatology
  • Fellowship: SUNY Upstate Medical University, 2012, Geriatrics
  • Residency: SUNY Upstate Medical University, 2011, Internal Medicine
  • MBBS: Maulana Azad Medical College, Delhi, India, 2000

Diseases/Specialties/Treatments

Internal Medicine; Geriatric Medicine; Gastroenterology

Clinical Interests

  • Motility disorders of the esophagus, stomach, small intestine and colon
  • Clinical disorders including:
    • Esophageal: gastroesophageal reflux disease, achalasia, non-cardiac chest pain.
    • Gastric: gastroparesis, functional dyspepsia
    • Small bowel: irritable bowel syndrome, small bowel bacterial overgrowth syndrome
    • Colorectal: constipation, diarrhea, fecal incontinence

Uma Murthy, MD
Uma Murthy, MD
315 464-5540

Education & Fellowships

  • Fellowship: Brigham and Women's Hospital, 1985
  • Residency: Coney Island Hospital, 1981
  • MD: St. John's Medical College, Bangalore University, India, 1975

Diseases/Specialties/Treatments

Gastroenterology; AVM - GI Vessel; Abdominal Pain; Achalasia; Acute Pancreatitis; Alcoholic Fatty Liver; more

Clinical Interests

  • Clinical and Laboratory Studies of Helicobacter Pylori Gastritis; Barretts Esophagus; Long-Term Histological Changes

Nuri Ozden, MD
Nuri Ozden, MD
315 464-8668

Education & Fellowships

  • Fellowship: Beth Israel Deaconess Medical Center/Harvard Medical School, 2009, Advanced Endoscopy
  • Fellowship: University of Miami, FL, 2003, Transplant Hepatology
  • Fellowship: University of Nebraska, 2002, Gastroenterology
  • Residency: St. Louis University Medical School, 1999, Internal Medicine
  • MD: Marmara University School of Medicine, Turkey, 1993

Diseases/Specialties/Treatments

Internal Medicine; Nutrition; Gastroenterology; Transplant Hepatology

Sekou R Rawlins, MD
Sekou R Rawlins, MD
315 464-8668

Education & Fellowships

  • Fellowship: SUNY Upstate Medical University, 2012, Gastroenterology and Hepatology
  • Additional Training: Jersey City Medical Center, 2005, Internal Medicine, Chief Resident
  • Residency: Albert Einstein College of Medicine, Beth Israel Medical Center, New York, 2004, Internal Medicine
  • MD: Howard University College of Medicine, 2001

Diseases/Specialties/Treatments

Internal Medicine; Gastroenterology; Gastrointestinal and Liver Diseases; Anorectal Manometry; Colonoscopy; Conscious Sedation; more

Research Interests

  • Fatty Liver Disease, and its progression to liver cirrhosis

Education Interests

  • General Gastroenterology

Clinical Interests

  • General Gastroenterology

    Basic and accessory endoscopy

    Bariatric Medicine


Ronald D Szyjkowski, MD
Ronald D Szyjkowski, MD
315 464-5804

Education & Fellowships

  • Fellowship: Brooke Army Medical Center, San Antonio, Texas, 1997, Adult Gastroenterology
  • Residency: William Beaumont Army Medical Center, El Paso, Texas, 1993, Combined Internal Medicine and Pediatrics
  • Internship: William Beaumont Army Medical Center, El Paso, Texas, 1990, Combined Internal Medicine and Pediatrics
  • MD: Loyola Univ Of Chicago Stritch School of Medicine, IL, 1989

Diseases/Specialties/Treatments

Internal Medicine; Pediatrics; Gastroenterology; AVM - GI Vessel; Abdominal Pain; Achalasia; more

Research Interests

  • Barrett's esophagus and endoluminal therapy of Barrett's esophagus, Endoscopic Ultrasound, Diagnostic and therapeutic.

Education Interests

  • Development and teaching of endoscopic ultrasound techniques and advanced endoscopy techniques

Clinical Interests

  • Barrett's esophagus and endoluminal therapy of Barrett's esophagus, Endoscopic Ultrasound, Diagnostic and therapeutic.


Arundeep Kahlon
Arundeep Singh Kahlon, MBBS, 3rd Year Fellow, graduated from Sikkim Manipal Institute of Medical Sciences, India. He completed his Residency in Internal Medicine at SUNY Upstate Medical University, Syracuse, NY
Jad Bou-Abdallah, MD
Pramod Pantangi, MBBS, 3rd Year Fellow, graduated from Osmania Medical College, Hyderabad, India.  He completed his Residency in Internal Medicine; and a Fellowship in Geriatric Medicine at SUNY Upstate Medical University, Syracuse, NY
Natalie Pavelock
Natalie Pavelock, MD, 2nd Year Fellow, graduated from Poznan University of Medical Sciences Center for Medical Education in English, Poland. She completed her Residency in Internal Medicine at Lutheran Medical Center, Brooklyn, NY
Ganesh Aswath
Ganesh Aswath, MBBS, 2nd Year Fellow, graduated from St. John's Medical College, India.  He completed his Residency in Internal Medicine at SUNY Upstate Medical University, Syracuse, NY.
Dhruv Lowe 
Dhruv Lowe, MBBS, 1st Year Fellow, graduated from Maulana Azad Medical College, India.  He completed his Residency in Internal Medicine at SUNY Upstate Medical University, Syracuse, NY
Natalya Iorio 
Natalya Iorio, MD, 1st Year Fellow, graduated from Temple University School of Medicine, US.  She completed her Residency in Internal Medicine at Temple University Hospital, Philadelphia, PA
DFarenga Debra Farenga, NP, is a 1995 graduate of Syracuse University with a Masters of Science as a Nurse Practitioner in Adult Health and continued a post-masters in Family NP. She has an extensive background in critical care nursing and education prior to advanced practice. Before joining the University Gastroenterology practice, Debra has practiced in both primary care and internal medicine, hematology/oncology, and most recently in Emergency Medicine. She is board certified by the ANCC in Adult Health and is a member of the Nurse Practitioner Association of NYS.
Andrea Hone

Andrea Hone, RN has worked as an RN for Upstate University Hospital for the past 14 years.  She worked both in the Pediatric ICU and Surgical ICU.  Andrea was the Patient Service Supervisor for the 5e Pre & Post Care unit for 5+ years and is now currently working as the Endoscopy Nursing Unit Director.