What Is A MHP?

What Is A MHP, Exactly?

When people ask "what is a MHP" in the context of medical physics, they're almost always referring to Certification in Medical Health Physics, a credential administered by the American Board of Medical Physics (ABMP). This site focuses specifically on the Part II written Medical Health Physics specialty examination - not the Part I General Medical Physics exam and not the Part III oral examination that follows later in the certification sequence.

Because "MHP" is used loosely across the physics and healthcare world, it's worth being precise: this article, and every resource linked from it, concerns the ABMP's Medical Health Physics specialty track. If you want a broader definitional breakdown, see What Is MHP? and MHP Meaning for related framing of the same credential.

Who Hires MHP-Certified Physicists

Medical health physicists work at the intersection of radiation safety and clinical medicine. Because the Part II blueprint devotes 75% of its weight to Standards and Regulations, Structural Shielding, Radiation Oncology, Diagnostic Imaging, and Nuclear Medicine, employers naturally cluster around facilities where those five areas are operational realities every day:

• Hospital radiation oncology departments needing shielding design review and treatment-machine compliance oversight
• Diagnostic imaging suites requiring dose optimization and regulatory documentation
• Nuclear medicine and molecular imaging programs handling radiopharmaceuticals and patient release criteria
• Regulatory and consulting firms that audit facilities against state and federal standards

If you're mapping the credential to career paths, MHP Jobs goes deeper on typical employers and role titles, while MHP Salary Guide 2026: Complete Earnings Analysis and Is the MHP Certification Worth It? Complete ROI Analysis 2026 address whether pursuing the credential aligns with your career goals.

Exam Format and Question Style

Part II is a four-hour written examination delivered on the candidate's own compatible computer via ExamSoft at a designated testing venue - this is not a remote proctoring situation you set up at home. Candidates should confirm hardware compatibility well before test day.

The written format mixes several question types, which changes how you should study compared to a single-format exam:

• Single-answer multiple choice - the most common format, testing direct recall and calculation
• Matching - pairing terms, regulations, or equipment with correct definitions or applications
• Choose-all-that-apply - requiring complete rather than partial knowledge of a topic, since partial credit is not a given
• Shared-stem Type S questions - a scenario or dataset followed by multiple related questions, common in clinical shielding and dosimetry contexts

Only nonprogrammable scientific calculators and supplied scratch paper are permitted in the testing room. If you're used to graphing calculators or programmable memory functions from other exams, you'll need to adjust your calculation habits during practice.

For a deeper breakdown of how these formats interact with content weighting, see How Hard Is the MHP Exam? Complete Difficulty Guide 2026.

The Nine Domains You Must Master

The current online blueprint organizes Part II content into nine weighted areas. Five of them - each worth 15% - account for 75% of the exam, so your study time should be allocated accordingly rather than spread evenly across all nine.

The remaining four domains carry smaller weights but still require solid preparation: Instrumentation (10%), and at 5% each - Laboratory Design, Radiation Biology, and Non-ionizing Radiation. Don't skip these entirely; a handful of missed questions across four domains adds up.

For a full walkthrough of every domain with subtopic detail, see MHP Exam Domains 2026: Complete Guide to All 9 Content Areas.

Eligibility and Registration Mechanics

Before you can sit for Part II, ABMP requires several eligibility components to be documented:

• A relevant graduate degree in medical physics or a closely related field
• Supervised clinical experience, with the required amount depending on your degree and any residency completed
• An endorsement from a board-certified physicist
• An endorsement from a board-certified physician
• A completed MHP Training and Education Form documenting your clinical training

The typical sequence is Part I (or an approved waiver) first, followed by Part II, then Part III. Certified Health Physicists who meet specific qualifications may be eligible for a direct-to-oral pathway that skips ahead. Because eligibility paperwork takes time to assemble - particularly the two professional endorsements - start gathering these well before you intend to register. Full detail on each requirement lives in MHP Requirements 2026: Eligibility, Prerequisites & How to Qualify.

Fees, Dates, and Logistics

The 2026 Part II fee is $690 if paid by check, or $715 if paid through PayPal - a modest difference worth factoring into your budgeting and payment method choice. The exam itself runs four hours and is administered on-site through ExamSoft at a designated venue, meaning you'll need to confirm your own laptop meets compatibility requirements ahead of your scheduled date.

The current information booklet was revised in May 2025, so always check the latest version before finalizing your application details, since requirements and forms can be updated between cycles. For a complete cost breakdown covering the exam fee alongside associated expenses, see MHP Certification Cost 2026: Complete Pricing Breakdown, and for scheduling specifics, MHP Exam Dates 2026: Testing Windows, Deadlines & Scheduling.

How Passing Is Determined

ABMP sets its passing standard using a Modified Angoff process, meaning the cut score is derived from expert judgment about item difficulty rather than a fixed percentage like "70% correct." This matters because it shifts slightly by form based on the specific questions used.

Officially reported pass rates were 44% in 2023, 60% in 2024, and 57% in 2025. These figures represent candidates passing divided by candidates taking that specific administration - not a first-time-only pass rate, so they include repeat test-takers in the pool. This distinction matters if you're benchmarking your own preparation against the numbers.

For a full statistical discussion, including what the year-over-year movement might suggest, see MHP Pass Rate 2026: What the Data Shows and MHP Passing Score 2026: Exactly What You Need to Pass.

Building a Domain-Weighted Study Plan

Generic study techniques only help if they're anchored to the actual blueprint. Since five domains carry 75% of the exam's weight, a sensible approach front-loads those topics and treats the smaller domains as later-stage reinforcement rather than an afterthought.

This is a starting framework, not a rigid formula - adjust pacing based on which domains reflect gaps in your clinical experience. For a more detailed week-by-week methodology tied to exam mechanics, see MHP Study Guide 2026: How to Pass on Your First Attempt. You can also build familiarity with the question styles described earlier using practice resources on the main practice test site.

Recertification and Maintaining Status

Certification isn't a one-time achievement - it renews every five years, requiring 125 CE credits during that cycle. Of those, at least 65 must be Category 1 credits, and no more than 60 can be Category 2 credits. This structure rewards higher-quality, verifiable continuing education over passive credit accumulation.

Because the domains tested on Part II reflect real clinical practice areas, ongoing CE in shielding updates, regulatory changes, and imaging technology tends to serve both your recertification requirements and your day-to-day competency simultaneously.

Frequently Asked Questions