The two clinic leaders, side by side

Both are proprietary combinations of sublingual and oral immunotherapy under in-person supervision. TIP is distinctive in starting from structurally similar proteins before the allergen, across a published 2.5-to-4-year course toward “food freedom”. Latitude runs oral immunotherapy programs — including multi-allergen treatment and, historically, FDA-approved products alongside — describing 6–12 months of active treatment to reach maintenance, average about 8.4 months. Faster is not better for every patient; neither is longer.

Differently shaped rather than simply different sizes. FAI: published subscription of $979–$1,079 a month, out-of-pocket, with its own first-year estimates of roughly $11,700–$15,400; accepted PPOs for billable services; no Kaiser or HMOs. Latitude: no published prices; visits and diagnostics billed in-network with major insurers in each region; patients publicly report a one-time program fee of $4,000–$5,000+ that insurance does not cover. Either way the honest ask is identical: the all-in figure, in writing.

FAI publishes “99% success after completing TIP” and a sub-1% reaction rate — self-reported, with a small retrospective study as the main publication, and documented public skepticism. Latitude publishes 98% desensitisation for under-fours and 94% across ages, labelled by them as internal data, plus conference data from an academic collaboration showing about 5% of over a thousand OIT patients’ doses causing any reaction, overwhelmingly mild. Same reading skills apply to both: ask about denominators, definitions, and independent verification.

Reachability first: Latitude’s dozen clinics cover both coasts’ metro areas; FAI is Long Beach plus New Jersey from late 2026. Model second: a family wanting insurer-integrated billing and a shorter active phase may lean Latitude; one drawn to TIP’s similar-protein sequencing and willing to fund a longer subscription course may lean FAI. And a family for whom neither clinic’s schedule works has the at-home route — gentler, generally a bit slower, and without geography.