Welcome to Double Bay Day Hospital


Dr Jeff Engelman

Dr Jeffrey Engelman is a Sydney gastroenterologist who has a keen interest in both Inflammatory Bowel Disease and endoscopy. He has been practicing privately since 1994, and his extensive research and experience has gained him a reputation for being one of city’s most trusted and friendly medical practitioners.

Dr Engelman gained his clinical training at the Prince of Wales/Prince Henry Hospital. He then undertook further gastroenterological training at Guy’s Hospital, London, where he conducted research for a Doctor of Medicine in the area of inflammatory bowel disease. The work was subsequently recognised by the Faculty of Medicine, University of New South Wales.

Dr Leah Gellert

Dr Leah Gellert is a female consultant Gastroenterologist based in Sydney’s East and South Eastern Suburbs.

Leah is part of South Eastern Gastroenterology and consults from rooms in Bondi Junction and Kogarah. She is accredited at Double Bay Day Hospital, St George Private Hospital and Prince of Wales Private Hospital.

Leah completed her undergraduate training with First Class Honours from the University of NSW and then completed a Masters of Medicine by Research from The University of Sydney. Leah has also undertaken advanced research with the Bowel Cancer & Digestive Research Institute Australia on identifying key factors for improving bowel cancer screening, especially for families at higher risk.

Leah has a particular interest in the prevention and early detection of bowel cancer. She also offers practical advice and management of common gastroenterological complaints such as abdominal pain, rectal bleeding, constipation, diarrhoea and Irritable Bowel Syndrome.

Dr Arthur Grillas

Dr Arthur Grillas is a highly experienced consultant gastroenterologist.  He has extensive experience in treating and managing acute hospital inpatients as well as office based ambulatory outpatients. Dr Grillas is fully accredited by Australia’s peak gastrointestinal procedures accreditation body, the Conjoint Committee for Recognition of Training in Gastrointestinal Endoscopy, for diagnostic and therapeutic gastroscopy, colonoscopy and endoscopic retrograde cholangio-pancreatography (ERCP).

Dr Grillas’ practice is predominantly general gastroenterology, with an interest in, but not limited to:  colon cancer screening, gastro-oesophageal reflux disease,  obscure gastrointestinal bleeding & inflammatory bowel disease.

Dr Grillas is a senior staff specialist in gastroenterology at the Wollongong Hospital campus.

Dr Grillas consults at Double Bay Day Hospital, Randwick and Wollongong.

Dr Nitin Gupta

I have been working as a Paediatric Gastroenterologist at the Sydney Children’s Hospital Network (Randwick) since 2011.  At the Syndey Children’s Hospital, I look after infants and children with complex medical and nutritional issues in diseases of the gastrointestinal tract and liver.  My clinical interests include general gastroenterology, Inflammatory Bowel Disease (IBD), Total Parenteral Nutrition (TPN) as well as Cystic Fibrosis.

During my training years, I took opportunities to move between various gastroenterology departments in tertiary hospitals in South Australia, New South Wales and Queensland.  Each of these centres have specialized clinical and academic interests that allowed me a thorough education into the broader gastroenterological disorders of Motility (Adelaide), Inflammatory Bowel Diseases (Sydney Children’s Hospital) and Liver diseases (Brisbane).

My family moved from India to Australia when I was five years of age.  I grew up in regional South Australia before moving to Adelaide for my medical degree and the start of my paediatric training.

My current positions include:

  • Staff Specialist, Sydney Children’s Hospital Network (Randwick)
  • Visiting Medical Officer (Honorary), Canberra Hospital
  • Clinical Lecturer, UNSW

Dr Arthur Kaffes

Associate Professor Arthur J Kaffes is a Gastroenterologist and therapeutic endoscopist at the Royal Prince Alfred and Prince of Wales Hospitals in Sydney and is a clinical associate professor at the university of Sydney clinical school. After completing gastroenterology training in Sydney Australia, he underwent 2 years of therapeutic endoscopy training at Westmead Hospital Sydney and then completed an endoscopy fellowship with Dr DN Reddy in Hyderabad India. Dr Kaffes has a keen interest in 3 areas of therapeutic endoscopy and has published and presented papers and abstracts in all these areas in both local forums and overseas meetings.

  1. Pancreatico-biliary endoscopy including support for a tertiary referral upper GI surgical service and liver transplant service. This has led to some new techniques and devices for metallic stenting in benign disease, side-port EUS FNA, and ERCP in altered anatomy.
  1. The first balloon enteroscopy procedure in Australia was performed by Dr Kaffes and now has the largest experience in Australia. He has published many clinical papers in peer review journals and is often invited to present at international and national meetings.
  1. Colonoscopy quality and maximising polyp detection have been a keen research interest with multiple clinical studies in this area on minimising polyp miss rates. Current research interests include polyp characterisation with zoom colonoscopy and further technologies to improve polyp detection. Dr Kaffes hosts one of the largest national live meetings in the area of endoscopy annually at Royal Prince Alfred Hospital where these techniques are often presented and discussed.

Dr Francis Lam

Dr Lam is a specialist Colorectal Surgeon with particular interest in proctology, bowel cancer screening and prevention, endoscopic and laparoscopic colorectal and hernia surgery. He graduated from the University of Sydney Medical School in 1997 and completed his General Surgery training at Royal North Shore Hospital, obtaining his FRACS in 2005. He underwent post-fellowship colorectal surgery training under CSSANZ at Concord Hospital in Sydney and The Queen Elizabeth Hospital in Adelaide before obtaining further sub-specialty training in laparoscopic colorectal surgery at PYNEH in Hong Kong. He completed his PhD thesis in Colorectal Cancer Proteomics at the University of Sydney in 2008. Dr Lam has been a Consultant Colorectal Surgeon at Prince of Wales Public and Private Hospitals and the Royal Hospital for Women since 2009. He has been appointed as a conjoint senior lecturer at the University of NSW.

A/Professor Daniel ( Avi ) Lemberg

I am a paediatric gastroenterologist with over 10 years of experience in the management of children with gastrointestinal diseases. I completed my medical training at The University of NSW and my paediatric training at The Sydney Children’s Hospital before undertaking dedicated fellowships in Paediatric Gastroenterology and Nutrition at both The Sydney Children’s Hospital and the British Columbia Children’s Hospital in Vancouver, Canada. In addition, I have worked as a Consultant Paediatric Gastroenterologist at The BC Children’s Hospital in Vancouver, Canada.

I was appointed Head of Paediatric Gastroenterology at Sydney Children’s Hospital in 2009 and am also Director of the Children’s Inflammatory Bowel Diseases Clinic (IBD) at The Sydney Children’s Hospital. I have extensive clinical and research experience in paediatric inflammatory bowel conditions and other gastrointestinal disorders.

I have clinical research interests in IBD, Probiotics, Gut Bacteria, Coeliac disease and Eosinophilic Oesophagitis (EoE)/Gut allergy and I am examining clinical trends in patients with these illnesses. I was promoted to Conjoint A/Professor at University of New South Wales in 2013. I have published more than 90 peer reviewed publications and book chapters by mid-2016.

Dr Mark Muhlmann

Dr Mark Muhlmann is an Australian educated and trained Colorectal and General Surgeon.  He specialises in colorectal surgery, general surgery, hernia surgery, laparoscopic surgery, colonoscopy and endoscopy.  Dr Muhlmann’s focus is on laparoscopic (keyhole) colorectal surgery for cancer, inflammatory bowel disease (crohns disease, ulcerative colitis) and diverticular disease. He also has experience in pelvic floor disorders including faecal incontinence and constipation.  Dr Muhlmann is a Visiting Medical Officer in colorectal surgery in the department of general surgery at Prince of Wales Public Hospital and at the Royal Hospital for Women in Randwick.   He is a senior conjoint lecturer at the University of New South Wales.  He is in private practice at the Prince of Wales Private Hospital and Double Bay Day Hospital.

Professor Michael Solomon

Professor Michael Solomon is the Academic Head and Visiting Medical Officer at the Department of Colorectal Surgery at RPA. He is a Professor of Surgical Research, Chairman of the RPA Institute of Academic Surgery, Head of the Surgical Outcomes Research Centre (SOuRCe) both for RPA and the University of Sydney and is currently on the Board of the Cancer Institute NSW. He is a past President of the CSSANZ and was previously the Chairman of the Australis and NZ Training Board in Colorectal Surgery.

Professor Solomon’s surgical expertise is in complex surgery for rectal and recurrent malignancy, screening for bowel cancer, inflammatory bowel disease and complex fistula as well as minimally invasive colorectal surgery.

Dr Martin Weltman 

Associate Professor Martin Weltman is an experienced consultant Gastroenterologist and Hepatologist, with a strong interest in liver disorders, capsule endoscopy, reflux oesophagitis, colon cancer screening and inflammatory bowel disease. He completed his medical degree at the University of Witwatersrand in South Africa in 1983. This was followed by specialist training in both South Africa and in Australia at Royal Hobart, St George and Westmead Hospitals (FRACP 1992). Professor Weltman subsequently obtained a PhD from the University of Sydney 1998) for his key studies into fatty liver disease.

Professor Weltman consults in private practice in Bondi Junction, Randwick and at Nepean Hospital. He is an Associate Professor of Medicine at the University of Sydney and works as a Staff Specialist at Nepean Hospital, where he is also the Director of the Gastroenterology and Hepatology Department.

He is the author of over 40 publications, multiple book chapters and a textbook in the field of gastroenterology (‘Gastroenterology and Hepatology: A Clinical Handbook’). Professor Weltman is a sought after speaker both nationally and internationally. He is also an editor and reviewer for specialist medical journals in the field of gastroenterology