Allergy & Immunology · Internal Medicine
Evidence-based expert witness.
Board-certified allergist-immunologist and medical-legal expert, advising plaintiff and defense attorneys on causation, standard of care, and the medical literature behind it — for over three decades.
Board Certified
American Board of Allergy & Immunology (recertified through 2031) and American Board of Internal Medicine, lifetime.
Clinical Professor - Volunteer
Trains medical students and fellows in advanced literature search, critical appraisal, and evidence-based application to patient care.
Deposition-Tested
Experienced in deposition and expert-witness consulting practice, with reports clear enough for a jury and rigorous enough to withstand cross.
Working Philosophy
"Litigation turns on documentation. I build every opinion on the medical record and the published evidence behind it — not on assumption — so it holds up whether the case settles on the report or goes the distance at trial."
JEFFREY M. DAVIDSON, MD
Allergist-Immunologist & Medical Expert
About Dr. Davidson
Thirty-two years of clinical experience, now in service for your case.
Dr. Davidson completed his Internal Medicine Residency and Allergy & Rheumatology fellowship at Stanford. He's had active and affiliate medical staff appointments at UCSF and California Pacific Medical Center. He practiced solo Allergy & Immunology for 27 years before serving as Senior Physician Allergy with San Francisco Allergy, Asthma & Immunology Medical Group.
Fellow, AAAAI
American Academy of Allergy, Asthma & Immunology
Fellow, ACAAI
American College of Allergy, Asthma & Immunology
Review Experience
Medicare SuperPRO, HCFA, Medi-Cal field consultant
Areas of Expertise
From fatal anaphylaxis to disputed mold exposure
Each matter is reviewed against the underlying medical literature before an opinion is formed — including, where the record supports it, refuting claims that evidence doesn't sustain.
- 01
Mold & "Toxic Mold" Claims
Injury claims tied to mold exposure — and, just as often, the documented absence of injury.
- 02
Fatal Allergy & Asthma
Anaphylactic and fatal asthma cases, including sequence-of-events and causation review.
- 03
Sick Building & Occupational
Building-related illness and occupational exposure claims, evaluated against environmental and clinical evidence.
- 04
Contrast Dye & IV Contrast
Reactions to radiographic contrast media and the standard of care around their administration.
- 05
Vaccine & Drug Reactions
Adverse reactions to vaccines, gamma globulin, and pharmaceutical products, including product-liability matters.
- 06
Mast Cell & Chemical Sensitivity
Mast cell activation, immunodeficiency, and disputed chemical- or occupational-sensitivity claims.
Track Record
Most cases are never seen by a jury.
The majority of cases resolve on the strength of the expert report — testimony is the exception, not the rule.
32
Years in Medical Legal Review
2031
Board Cert. Recertified Through
Depositions
Testimony Experience
Unsolicited Testimonials
What attorneys are saying
"It has been a real pleasure for me to work with you on this difficult matter. Your assistance has been critical in our presentation of the case. On behalf of myself and the family, thank you for all your assistance."
"Your expertise was truly invaluable and appreciated. Should my colleagues or I require the services of an immunologist in the future, we will happily reach out to you again."
"I can tell you that your work on this matter was a major factor in resolving for a small nuisance sum."
"I can tell you that your work on this matter was a major factor in resolving for a small nuisance sum."
Get a free consultation
Contact me through Seak Expert to schedule a consultation.