Adult & Pediatric Allergy & Immunology Certification

What This Certification Actually Is

Certification in Adult & Pediatric Allergy & Immunology Subspecialty is administered through the American Osteopathic Conjoint Examination Committee on Pediatric and Adult Allergy and Immunology, operating under the American Osteopathic Association (AOA). Within the exam program materials this credential is referenced by the acronym PAAI. This site focuses specifically on the initial subspecialty certification exam - the written qualifying assessment osteopathic physicians take to earn the credential - not the separate longitudinal Osteopathic Continuous Certification (OCC) assessment that maintains it afterward.

If you're just starting to research this pathway, it helps to first understand what Adult & Pediatric Allergy & Immunology actually covers and how the certification fits into an osteopathic physician's broader career. For a plain-language breakdown of the credential itself, see what this certification means for practicing clinicians.

Exam Format and Delivery

The initial examination is delivered remotely through MonitorEDU using the PARADIGM examination platform. Candidates need a suitable computer, a smartphone camera for proctoring, valid identification, and a private, quiet testing space. The platform itself provides electronic lab values, an on-screen calculator, and a scratchpad, so you don't need to bring or memorize reference tables for basic computations.

Structurally, the exam is built from 250 multiple-choice questions split into four sections of 90 minutes each. The section-by-section question counts are 63, 62, 63, and 62 - nearly even, but not identical, so pacing yourself section by section matters more than assuming a flat average.

• Section 1: 63 questions / 90 minutes
• Section 2: 62 questions / 90 minutes
• Section 3: 63 questions / 90 minutes
• Section 4: 62 questions / 90 minutes

Scheduled breaks run 10, 30, and 10 minutes between sections, adding 50 minutes of break time to six hours of actual answering time. That totals a 6-hour-50-minute testing appointment. Candidates should plan their exam day around this full window - arrival, ID verification, and system checks all happen before the clock starts on Section 1.

Passing is determined by a scaled score of 500 on a 200-800 scale, not a fixed percentage of correct answers. This distinction matters for how you interpret practice test performance; a raw percent-correct on a study bank doesn't map directly to the scaled passing threshold. For a deeper breakdown of how scoring works and what a 500 actually represents, see the dedicated passing score guide, and for a full analysis of exam difficulty and pacing under this four-section structure, read how hard the exam really is.

The Eight Content Domains

The initial exam blueprint is organized into eight content areas that together total 100% of the exam. This is distinct from the OCC blueprint, which is weighted differently and should not be used to plan for the initial exam. Understanding these weights is the single most useful thing you can do before opening a question bank.

For question-style breakdowns and study sequencing across all eight areas, the complete exam domains guide goes deeper than the summary above. If you want a compact, single-page review of the same weighting once you're closer to test day, the exam cheat sheet is built around these exact eight categories.

Eligibility and Fellowship Requirements

Eligibility for the initial examination is gated behind primary board certification: candidates must hold AOBIM or AOBP primary certification, maintain an active and unrestricted medical license, and demonstrate professional and ethical standing. On top of that, candidates must complete qualifying allergy/immunology fellowship training with formal verification of that training.

One nuance worth planning around: senior fellows may sit for the exam after completing at least 80% of their required clinical rotations. However, actual certification is not granted until training completion is fully verified - so passing the exam early doesn't substitute for finishing the fellowship. This lets senior fellows test on a schedule that fits their training timeline without forcing certification to wait on a technicality, while still holding the line on complete training verification before the credential is issued.

A full walkthrough of documentation, timing, and verification steps is available in the requirements guide.

Fees, Cancellation, and Scheduling Mechanics

The initial examination costs $1,700. If a retake is needed, the retake fee is $1,400 - lower than the initial fee but still a significant cost, which is one more reason to prepare thoroughly for a single attempt rather than plan around a retake.

Cancellations are refundable if submitted in writing at least 15 full days before the scheduled examination date, with a $300 processing fee withheld from the refund. Cancelling inside that 15-day window forfeits eligibility for a refund under this policy, so lock in your schedule only once you're confident in your date.

For a full cost breakdown including how these figures fit into total certification investment over a career, see the certification cost guide. Scheduling windows, registration deadlines, and how the calendar lines up with fellowship completion timelines are covered in the exam dates guide.

After You Pass: OCC and Maintenance

Certificates issued before 2025 carry a ten-year term. The 2025 cohort, however, is issued a two-year term - a notably shorter cycle that candidates in that specific cohort need to plan around carefully.

Ongoing maintenance runs through Osteopathic Continuous Certification (OCC), which is structured very differently from the initial exam. OCC includes 16 untimed, open-resource PAAI questions each year, with a 70% annual passing criterion and a $250 annual assessment fee. Starting with the 2026 cycle, this annual assessment is delivered through the AOA Learning Portal. New diplomates don't begin OCC immediately - participation starts after one full calendar year of certification, meaning the 2025 cohort's OCC obligations begin in 2027.

Beyond the annual question set, maintenance also requires keeping an active license, staying compliant with primary-board CME (there's no separate conjoint-subspecialty CME quota layered on top), and completing one quality-improvement activity every ten years.

Building a Domain-Weighted Study Plan

Because Basic science alone accounts for 30% of the blueprint, an effective study sequence should not treat all eight domains as equal blocks of time. A weighted approach - spending roughly proportional study time to each domain's blueprint percentage - is the most defensible way to allocate limited preparation weeks.

A step-by-step version of this sequencing, including how to interleave practice questions with review, is laid out in the study guide for a first-attempt pass. If you want to see how other candidates have actually performed and what that implies for your own prep intensity, the pass rate analysis is worth reading before you finalize your timeline. You can also rehearse the exact section-and-timing structure using full-length practice sessions on the main practice test platform, which mirrors the four-section, timed format described above.

Who Values This Credential

This subspecialty certification is built for osteopathic physicians who already hold AOBIM or AOBP primary certification and have completed allergy/immunology fellowship training. In practice, that means the credential signals fellowship-level subspecialty competence to hospital credentialing committees, multispecialty group practices, and academic osteopathic training programs that require conjoint subspecialty certification for faculty or attending roles.

If you're evaluating whether pursuing this credential fits your career plans, the ROI analysis weighs the fee and time investment against career positioning, and the salary guide looks at how subspecialty certification shows up in compensation discussions. For readers still mapping out what training pathway leads here, the training overview and job market overview cover the practical path from fellowship to practice.

Related terminology and definitional questions - including how this acronym is sometimes confused with unrelated credentials - are addressed in what the designation means and what it stands for. If you're comparing this specific certification against general descriptions elsewhere, it's worth double-checking you're reading about the AOA conjoint committee's PAAI exam and not a differently-acronymed credential.

Frequently Asked Questions