An Arizona native, Dr. Manning has very deep roots in the valley. His interest in allergy and immunology started when he was a patient in the office that he eventually joined.He was very fortunate to start his career under the guidance of his childhood allergist and mentor, Dr. Hartley. This background gives Dr. Manning a unique insight and compassion for his patients.His expertise includes allergies, asthma, sinusitis, food allergies, drug allergies, angioedema and hereditary angioedema, hives, contact dermatitis, aspirin and other drug desensitization, and immune deficiencies. Dr. Manning lectures throughout the United States, oversees a cutting-edge research department within his practice, and is active in educating medical students, residents, and allergy fellows.For many years, Dr. Manning coached his sons in various youth sports. He was active on the boards of the different little league and high school sports. He has always had a love for running and enjoys completing half and full marathons with his daughter. He and his wife are also passionate about animal rescue. Dr. Manning is highly rated in 12 conditions, according to our data. His top areas of expertise are Common Variable Immune Deficiency, Allergic Rhinitis, Grass Allergy, and Sinusitis.

Ronald Mittel is an Allergy and Immunologist and a Pediatrics provider in Phoenix, Arizona. Dr. Mittel is highly rated in 18 conditions, according to our data. His top areas of expertise are Grass Allergy, Sinusitis, Allergic Rhinitis, and Hives. Dr. Mittel is currently accepting new patients.

Mark Schubert is an Allergy and Immunologist in Phoenix, Arizona. Dr. Schubert is highly rated in 3 conditions, according to our data. His top areas of expertise are Grass Allergy, Allergic Rhinitis, Sinusitis, and Ozena.

Christopher Couch is an Allergy and Immunologist in Phoenix, Arizona. Dr. Couch is highly rated in 3 conditions, according to our data. His top areas of expertise are Grass Allergy, Allergic Rhinitis, Sinusitis, and Common Variable Immune Deficiency. Dr. Couch is currently accepting new patients.

Kiranjit Khalsa is an Allergy and Immunologist in Phoenix, Arizona. Dr. Khalsa is highly rated in 2 conditions, according to our data. Her top areas of expertise are Grass Allergy, Allergic Rhinitis, Sinusitis, and Hives. Dr. Khalsa is currently accepting new patients.

Keith Sacco is an Allergy and Immunologist in Phoenix, Arizona. Dr. Sacco is highly rated in 2 conditions, according to our data. His top areas of expertise are Chronic Granulomatous Disease, Hives, Muckle-Wells Syndrome, and Anaphylaxis.

Cindy Bauer is an Allergy and Immunologist in Phoenix, Arizona. Dr. Bauer is highly rated in 2 conditions, according to our data. Her top areas of expertise are Eosinophilic Esophagitis, Asthma, Stridor, and Grass Allergy. Dr. Bauer is currently accepting new patients.

Housam Alasaly is an Allergy and Immunologist in Avondale, Arizona. Dr. Alasaly is highly rated in 8 conditions, according to our data. His top areas of expertise are Ozena, Nonallergic Rhinopathy, Allergic Rhinitis, and Grass Allergy.

Diplomate American Board of Internal Medicine,Diplomate American Board of Allergy and ImmunologyBoard-certified in internal medicine, Aaron Davis, MD, is also a board-certified allergist and immunologist. He is dedicated to providing personalized care at Allergy, Asthma & Immunology, LTD, with two locations in Scottsdale and another in Gilbert, Arizona. He joined Allergy, Asthma & Immunology, LTD, in 2005 and serves as an investigator in clinical research trials.Dr. Davis was born and raised in Richland, Washington. He graduated from Carroll College in Helena, Montana, with a Bachelor of Arts in biology. He completed medical school at St. Louis University School of Medicine.Afterward, he moved to Arizona for his internal medicine residency at Mayo Clinic in Scottsdale and completed an allergy and immunology fellowship at Henry Ford Health Systems in Michigan.He is a member of the Academy of Allergy, Asthma, and Immunology; American College of Allergy, Asthma, and Immunology; American Medical Association; Maricopa County Medical Society; and Arizona Allergy and Asthma Society. Dr. Davis is also a diplomate of the American Board of Internal Medicine and board-eligible by the American Board of Allergy and Immunology.Dr. Davis is married to Kelly, an orthopedic physician assistant. He enjoys outdoor activities and traveling. Dr. Davis is highly rated in 8 conditions, according to our data. His top areas of expertise are Allergic Rhinitis, Grass Allergy, Sinusitis, and Hives.

Ifat Krase is an Allergy and Immunologist in Phoenix, Arizona. Her top areas of expertise are Anaphylaxis and Primary Immunodeficiency (PID). Dr. Krase is currently accepting new patients.

Brenna Labere is an Allergy and Immunologist and a Pediatrics provider in Phoenix, Arizona. Her top areas of expertise are Chronic Granulomatous Disease, Grass Allergy, Allergic Rhinitis, and Primary Immunodeficiency (PID). Dr. Labere is currently accepting new patients.

Peter Uong is an Allergy and Immunologist in Phoenix, Arizona. His top areas of expertise are Ozena, Nonallergic Rhinopathy, Hives, and Asthma.

Claudia Gaefke is an Allergy and Immunologist in Phoenix, Arizona. Her top areas of expertise are Grass Allergy, Selective Deficiency of IgA, Allergic Rhinitis, and Sinusitis. Dr. Gaefke is currently accepting new patients.

Joseph Yusin is an Allergy and Immunologist in Phoenix, Arizona. His top areas of expertise are Asthma, Hives, Grass Allergy, and Angioedema.

Mark Rose is an Allergy and Immunologist in Peoria, Arizona. Dr. Rose is highly rated in 26 conditions, according to our data. His top areas of expertise are Grass Allergy, Sinusitis, Allergic Rhinitis, and Hives. Dr. Rose is currently accepting new patients.

Ryan Casper is an Allergy and Immunologist and a Pediatric Allergy and Immunologist in Peoria, Arizona. Dr. Casper is highly rated in 22 conditions, according to our data. His top areas of expertise are Mast Cell Activation Syndrome (MCAS), Grass Allergy, Sinusitis, and Allergic Rhinitis. Dr. Casper is currently accepting new patients.

Eiza Ching is an Allergy and Immunologist in Peoria, Arizona. Dr. Ching is highly rated in 21 conditions, according to our data. Her top areas of expertise are Sinusitis, Grass Allergy, Allergic Rhinitis, and Primary Immunodeficiency (PID). Dr. Ching is currently accepting new patients.

Kevin Boesel is an Allergy and Immunologist and a Pediatrics provider in Peoria, Arizona. Dr. Boesel is highly rated in 20 conditions, according to our data. His top areas of expertise are Grass Allergy, Sinusitis, Allergic Rhinitis, and Food Allergy. Dr. Boesel is currently accepting new patients.

Jacob Maddux is an Allergy and Immunologist in Peoria, Arizona. Dr. Maddux has been practicing medicine for over 9 years is highly rated in 14 conditions, according to our data. His top areas of expertise are Allergic Rhinitis, Conjunctivitis (Pink Eye), Grass Allergy, and Sinusitis. Dr. Maddux is currently accepting new patients.

Gilbert Ortega is an Allergy and Immunologist in Peoria, Arizona. Dr. Ortega is highly rated in 14 conditions, according to our data. His top areas of expertise are Grass Allergy, Sinusitis, Allergic Rhinitis, and Allergic Conjunctivitis. Dr. Ortega is currently accepting new patients.

Todd Hrabak is an Allergy and Immunologist in Glendale, Arizona. Dr. Hrabak is highly rated in 8 conditions, according to our data. His top areas of expertise are Primary Immunodeficiency (PID), Common Variable Immune Deficiency, Allergic Rhinitis, and Sinusitis. Dr. Hrabak is currently accepting new patients.

Fadia Habib-Khazen is an Allergy and Immunologist in Phoenix, Arizona. Dr. Habib-Khazen is highly rated in 3 conditions, according to our data. Her top areas of expertise are Allergic Rhinitis, Grass Allergy, Sinusitis, and Ozena. Dr. Habib-Khazen is currently accepting new patients.

Bartlomiej Leyko is an Allergy and Immunologist in Phoenix, Arizona. Dr. Leyko is highly rated in 3 conditions, according to our data. His top areas of expertise are Allergic Rhinitis, Grass Allergy, Sinusitis, and Ozena. Dr. Leyko is currently accepting new patients.

Richard Wu is an Allergy and Immunologist in Phoenix, Arizona. Dr. Wu has been practicing medicine for over 9 years.

National Commission on Certification of PhysicianAssistants, Board Certified, 1998Rachael Stillwagon, MS, PA-C, is a caring physician assistant at Allergy, Asthma & Immunology, LTD, with two locations in Scottsdale and another in Gilbert, Arizona.Rachael was born in Iowa and raised in Iowa and Wisconsin. In 2000, Rachael began working in the specialty of allergy and asthma, and has been passionate about the field ever since. In 2002, she and her husband moved to Scottsdale, where she continued her work. Rachael is a member of multiple allergy associations locally and nationally. She has served on various professional committees and currently lectures locally on atopic dermatitis.As a physician assistant, Rachael serves as a primary care provider within the clinic. Her responsibilities include history and physical examinations, ordering and interpreting diagnostic tests, prescribing medications, and patient follow-ups. She works personally with each patient to formulate a treatment plan and ensure the best possible care.Rachael and her husband have three children, all born in Scottsdale. She enjoys running, spending time with friends and her large family, volunteering with her children for Boys Team Charity and the National Charity League, as well as various projects at their schools. She loves watching her children participate in their sporting events and other activities!. Her top areas of expertise are Sinusitis, Giant Papillary Conjunctivitis, Allergic Rhinitis, and Grass Allergy.