Welcome to our practice! We specialize in the diagnosis and treatment of asthma, allergic rhinitis (hay fever), food and medication allergies, eczema and hives, insect sting allergies and chronic sinusitis. Our goal is to educate patients of all ages about their condition and help them have a better quality of life.

At your first visit with our group, we will review your symptoms, take a detailed history, including environmental data and do a physical exam of your respiratory system. We will perform tests such as skin tests, breathing tests and/or blood tests. Please allow 1 1/2 hours for the first visit.

We may ask you to stop antihistamines for 5 days prior to the visit. If you are not sure if your medicines contain antihistamine, please ask us or your pharmacy. Common antihistamines include: Claritin, Alavert, Loratadine, Benadryl, Allegra, Zyrtec, and many cold, cough and sinus products.

Dr. Robert Ziering

Dr. Robert Ziering

Dr. Ziering specializes in treating adult and pediatric allergies and asthma. He received his medical degree from the University of Brussels and completed his residency at Newark Beth Israel Medical Center. He also completed fellowships at Newark Beth Israel Medical Center and UCSD.

He has been in practice for 40 years with the Allergy and Immunology Medical Group. A board-certified physician, he is a member of American College of Allergy, Asthma and Immunology and the San Diego Allergy Society.

Dr. Ziering lives in San Diego with his wife and two children. He is fluent in French, Flemish and Spanish.

Dr. Heather Volpp

Dr. Heather Volpp received her medical degree in 2001 from the University of Nevada. She completed her residency in internal medicine at Cedars Sinai Medical Center in Los Angeles and then did a fellowship in allergy and immunology at UCLA/VA Medical Center in West Los Angeles. Dr. Volpp specializes in both adult and pediatric patients and treats all aspects of allergic disease and asthma. She has been in practice since 2006 and is a member of AAAAI, ACAAI, and the San Diego Allergy Society.

Dr. Volpp lives in Encinitas with her husband and four children. In her spare time she enjoys running, tennis and cooking.

Dr. Robert Ziering
Dr. Robert Ziering

Apryl Pidding FNP

Apryl Pidding, Nurse Practitioner, received her bachelors in health communications in 1996 from the University of Washington. After 10years of experiencing life through multiple different disciplines as well as 7 years as a reserve officer in the United States Coast Guard, she continued her eduction by completing a second bachelors degree in nursing in 2006 from the University of San Diego. She then went on to receive her Masters of Science in Nursing, specializing as a family nurse practitioner in 2010. She has experience in family practice, urgent care, hematology/oncology and works with both adult and pediatric patients to treat all aspects of allergy and asthma diseases.

Apryl Pidding lives in Encinitas with her husband and two sons. In her spare time she enjoys exercising, hiking, camping and surfing.

Angela Bretton FNP-BC

Angela Bretton is a Board-Certified Nurse Practitioner. She has worked in healthcare for the past 20
years. She is a graduate from Palomar College of Nursing, and has 10 years of experience as a surgical
and urgent care nurse. In 2013, she returned to nursing school at California State University of San
Marcos to obtain her Master’s and Nurse Practitioner’s degree. She has experience in specialized
medical care, urgent care, and disease management for ages 18 months & older with allergies and
Angela lives in Escondido with her family and 3 dogs. In her spare time, she enjoys traveling, crafting,
going to movies & Padres games, and spending time with her 5 grandchildren.

CNP Angela Betton