Stephen B. Fritz, MD

Fritz_Dr_StephenStephen B. Fritz, MD

Dr. Fritz is a board certified allergist and dedicated asthma physician. Dr. Fritz received his undergraduate degree at Tulane University, his medical degree at St. Louis University School of Medicine, and completed his residency in internal medicine at Vanderbilt University Medical Center.

After serving as a primary care physician in the Air Force, Dr. Fritz completed his Fellowship in Allergy and Immunology at the University of Michigan in 2002. His fellowship training in allergy and clinical immunology was completed at the University of Michigan Hospitals which is home to a top ten medical center as well as the oldest allergy training program in the United States.

A diplomat of the American Board of Allergy, Asthma and Immunology, he has extensive experience with adult and pediatric patients.

After five years as a practicing allergy and asthma specialist in Montana, Dr. Fritz opened Idaho Allergy in 2008. Dr. Fritz has been in charge of many research studies related to his specialty, and utilizes this knowledge to the benefit of his allergy, asthma, and COPD patients. Dr. Fritz has also published multiple articles in the top two journals in his specialty and has authored a chapter in an allergy textbook used worldwide by physicians.

Dr. Fritz is a Portland native who has returned to that region as well as his practice in Idaho. Idaho Allergy is the only allergy practice in Idaho to offer aspirin desensitization and, most recently, food desensitization for those with peanut, tree nut, milk, egg, and soy allergies.

Clinical Specialties & Interests

  • Clinical Interests: Repiratory; Pharmacology; Food allergy; Asthma; Allergic rhinoconjunctivitis; asthma; chronic urticaria; primary humoral immunodeficiencies; food allergy; venom allergy; allergic contact dermatitis; aspirin exacerbated respiratory disease

Certifications & Licensure

  • OR State Medical License
  • ID State Medical License
  • American Board of Allergy and Immunology-Allergy & Immunology

Awards, Honors, & Recognition

  • Distinction in Research Louis University School of Medicine
  • Top abstracts presented at the VIth workshop on Gastroduodenal Pathology and Helicobacter Pylori in Brussels, Belgium
  • Most Compassionate Doctor–American Registry
  • Willett R. Lake Scholarship

Food Desensitization for People with Food Allergies: Idaho Allergy is pleased to announce a new food desensitization program that can provide a long term solution for people with allergies to peanut, egg, milk, tree nuts, soy, and wheat.

Oral Immunotherapy does not involve shots or medications. Patients gradually consume increasing small amounts of the food they are allergic to over a period of two to six months, resulting in tolerance of a food that previously elicited a severe reaction.

Our goal is to get the patients “bite proof”. For some patients, the goal may be to add the food to their diet and eat it freely. This outcome will be discussed and determined on a case by case basis depending on the individual.

In 2003, Stanford conducted its first clinical trial for oral immunotherapy for people with food allergies. By 2011, this evolved to an established facility dedicated to the treatment of food allergies, SAFAR (Stanford Alliance for Food Allergy Research).

Private clinics have shown very favorable results as well. In the West, there are two Portland area allergy clinics that have been successfully utilizing oral immunotherapy to desensitize food allergic patients for over five years. The New England Food Allergy Treatment Center has treated over 700 peanut allergic patients with 90-95 percent of patients being able to be desensitized. The technique we use has treated over 100 patients with a hundred percent success rate.

While no medical procedure is completely risk free, the risk of reactions to Oral Immunotherapy are equal to or less than strict avoidance. Few patients have experienced itchiness. Nausea is unlikely but possible. Use of epinephrine is rare. The treatment is safe and effective, provided that it is properly administered in a controlled setting.


Dr. Stephen Fritz
Idaho Allergy
379 East Shore Dr., Suite #100, Eagle, ID 83616
(208) 938-3443

9300 SE 91st Avenue, Suite 201, Happy Valley, OR 97086
(971) 220-2201
2850 SE Powell Valley Rd., Ste. 104, Gresham, OR 97080
(971) 220-2202

Columbia Allergy: Dr. Jain, Dr. Fritz and Dr. Gandhe

OIT Details

Doctor Name: Dr. Fritz
State: Idaho and Oregon
Allergen: Peanuts, Tree Nuts, Egg, Milk, Wheat, Soy
Treats single/multi allergens at once: Single
Offers SLIT for food allergens: No

Additional Features:


Articles in Our Research & Learn Center

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Map to Office(s)







Clinical Trials

Publications & Presentations


Journal Articles

  • PCR Analysis of Peruvian Sewage Water: Support for Fecal-Oral Spread of Helicobacter Pylori. Westblom, T.U., Fritz, S.B, Acta Gastro-Enterologica Belgica, 1993;56(Suppl): 47

Books/Book Chapters

  • Food Allergy: Adverse Reactions to Foods and Food Additives. Chapter: Pharmacologic Food Reactions Page 395 – 407 Fritz, S.B., Baldwin, J.L Editors: Metcalfe, Sampson, and Simon.Blackwell Science, Inc, Malden, MA, Edition 3

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