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Areas of Expertise

  • Adult Asthma
  • Adult Food Allergy / Anaphylaxis
  • Adult Immunodeficiency (Not HIV)
  • Adult Urticaria / Angioedema
  • Allergy / Immunology
  • Allergy and Immunology
  • Mastocytosis

Conditions and Treatments

Location

Languages

  • English
  • Portuguese
  • Spanish

Education

  • Doctor of Medicine - Ohio State University, 1997
  • Internship - Scripps Mercy Hospital, 1998
  • Residency - Scripps Mercy Hospital, 2000
  • Fellowship - Scripps Clinic and Research Foundation, 2002

Board Certifications

  • Allergy and Immunology - American Board of Allergy and Immunology, 2003

Patient Comments

Patient Comments are gathered from the Press Ganey Patient Experience Survey and displayed in full. Patients are not identified in order to respect patient privacy.
I always know my doctor has my best interest at heart.
July 9, 2025
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Exceptional understanding and superior communication skills.
July 7, 2025
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Doc F is the best doc. He listens and brainstorms with me.
July 7, 2025
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He's fabulous
July 3, 2025
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The dr. Paid total Concern for me and my case could not be more on target. He didn't rush our visit nor act like he had to be somewhere else he paid total attention to me.
June 9, 2025
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I love that I can be open and frank with Dr Farenholtz and get his honest opinion as well.
May 8, 2025
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Dr. Fahrenholz listened to my concerns and gave good advice. He is always kind and never in a hurry to get in and out.
February 10, 2025
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Every interaction I've ever had at VASAP has been wonderful, but I especially like Dr. Fahrenholz. He's very personable, really listens to what I say, gives me the information needed to weigh the pros and cons of my options, and answers all of my questions. I have no hesitation in recommending him to my friends and family.
January 20, 2025
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This refers to staff including phone calls before my appt, doctor, nurse, etc: Everyone was so nice and attentive. Everyone was non-defensive and kind. I feel confident that I am getting the care I need.Added: Dr Farenholz was patient and caring with me, and I appreciate his thorough, non-aggressive approach.
January 6, 2025
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