Dr. Daniel Gelfond & Dr. Humaira Hashmi
166 Washington Avenue, Batavia, NY 14020
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Our Team

Thank you for your interest in WNY Pediatric Gastroenterology, PLLC, a private practice where we partner with patients (infants, toddlers, grade school aged children, teens and young adults) and their families. Based on all of the information from previous medical evaluations, tests, and our initial office visit, we can make treatment recommendations, or provide several reasonable strategies to further evaluate and manage the problems. We take the time to:
– Understand the issues at hand
– Determine the severity of an issue
– Discuss procedures and treatments
These might involve dietary changes, medication trials, office visits, or specific testing.

The path that is taken needs to be one that the physician, patient and family agree upon so sometimes when you are in the waiting room, minutes delayed, this is the likely reason, as each patient is different as are their gastroenterology needs. So when extra time is needed, for whatever reason, we try to accommodate each family’s needs. This is one of the many benefits of having a private practice, being able to spend the time that is needed with each patient. The essence of what we offer is to first, understand not only the medical facts, but the impact that these problems have had on the individual and the family.

When chronic conditions are identified and treated, such as celiac disease, Crohn’s disease, eosinophilic inflammatory disorders, polyposis syndromes, or autoimmune hepatitis, we have an opportunity to develop a long term relationship with patients and their families, in conjunction with their primary care providers and other sub-specialists. We value these types of opportunities to get to know families over time and to be able to provide the assistance they need. Other conditions, such as abdominal pain, constipation, gastro esophageal reflux and allergic colitis can frequently be evaluated and managed over several weeks to months, and some problems require only a few office visits.

Convenience & Reliability

To Accommodate our patients, we offer convenient office hours and an additional satellite location in Olean. Either Dr. Gelfond or Dr. Hashmi are on call 24 hours a day, 7 days a week. They are always available to speak with regarding any concerns you may have for your child.

We currently maintain hospital privileges at Rochester Regional Health (United Memorial Medical Center) located in Batavia as well as Golisano Children’s Hospital in Rochester.

Meet the Doctors


Humaira Hashmi, MD

829802781Dr. Humaira Hashmi received her medical degree from Punjab Medical College Faisalabad, Pakistan with honors in anatomy and did her residency in Pediatrics in Cooper University Hospital in New Jersey. She joined Women & Children’s Hospital of Buffalo Pediatric Gastroenterology Fellowship program in July 2005. Dr. Hashmi completed her fellowship in June 2008 and has been a faculty member through 2014. In addition to patient care, she has been actively involved in teaching and clinical studies. She will continue her academic and research contributions in her field of expertise. Dr. Hashmi sees infants, children and adolescents with wide spectrum of gastrointeintestinal diseases and performs gastrointestinal procedures in pediatric and adolescent patients. She has special interest in managing children and adolescents with Inflammatory Bowel Disease and is actively involved in local and national studies. Dr. Hashmi is an active member of North American Society of Pediatric Gastroenterology, Hepatology, and Nutrition. She is also an active member of the Gastroenterology Women’s Coalition. She is board certified in Pediatrics and Pediatric Gastroenterology and Nutrition. Dr. Hashmi is accredited by the Royal College of Physician Educators and contributed to numerous publications and texbook chapters. Dr. Hashmi lives in Buffalo with her husband and three children.

Daniel Gelfond, MD

2139017626Dr. Daniel Gelfond received his medical degree from St. George’s School of Medicine. He completed pediatric residency training in Long Island College Hospital and Beth Israel Medical Center in New York City. Dr. Gelfond pursued fellowship training in Pediatric Gastroenterology and Nutrition at the University of Maryland School of Medicine. He has worked at Women & Children’s Hospital of Buffalo from 2008 through 2014. In addition to patient care, he has been actively involved in research and teaching. He will continue his academic and investigational contributions in his areas of expertise and research. Dr. Gelfond sees infants, children and adolescents with a wide spectrum of gastrointeintestinal diseases and performs gastrointestinal procedures in pediatric and adolescent patients. He has a strong interest in celiac disease and serves as a medical advisor to WNY Gluten Free Diet Support Group. He is nationally recognized physician scientist conducting clinical studies of gastrointestinal ailments in patients with cystic fibrosis. He is an active member of North American Society of Pediatric Gastroenteroloy and Nutrition. He is board certified in Pediatric Gastroenterology and Nutrition. Dr. Gelfond is accredited by the Royal College of Physician Educators and contributed to numerous publications, chapters along with a recently published textbook titled Pediatric Gastroenterology. Dr. Gelfond lives in Buffalo with his wife and three children.

Our Batavia Staff

At WNY Pediatric Gastroenterology, we select only the best of the best to serve our patients and their families. All of our staff members are friendly, knowledgeable, and highly proficient in their office duties. Should you have any questions or concerns before, during or after a visit to our office , do not hesitate to visit with one of our staff members.


Gina M. Corbelli

ATT_1442263157602_20150822_213456-2-1Gina is a certified Medical Office Manager and holds a Bachelor’s degree in Business Administration. She has been in practice management for 24 years. Gina’s Administrative experience has been with both hospital and practice settings. Prior to joining WNY Pediatric Gastroenterology, her professional experience included Internal and Family Medicine, Pediatric Gastroenterology, Critical Care, Hospital Medicine, Orthopaedics and Podiatry. Gina is committed to providing the best experience possible for all our patients.


Kristen Lazarony

20150416_155901Kristen is a Medical Assistant and works closely with our physicians. She has worked in medical field in excess of 5 years and continues to further her health care education at Monroe Community College.  Kristen is very experienced in phlebotomy and all aspects in our Pediatric Gastroenterology practice.


Ruth Comeau


Ruth has worked in the medical field for 15 years. She has worked in primary care, OB/GYN, medical billing and Pediatrics.