About ADHDTestNow — Clarity-Driven ADHD Assessment You Can Trust
At ADHDTestNow, we believe that every person who has ever questioned their focus, struggled with follow-through, or felt misunderstood deserves more than a guesswork diagnosis. We exist to bridge the gap between uncertainty and clarity — using FDA-cleared, objective ADHD assessment technology that gives you real, measurable data to move forward with confidence.
We are not a quiz. We are not a shortcut. We are a clinically grounded, evidence-based assessment service built for people who are ready to stop wondering and start understanding.
Why ADHDTestNow Exists
Millions of individuals — children, teens, and adults alike — live with unaddressed ADHD symptoms for years before receiving meaningful support. Long waitlists, rushed appointments, and oversimplified online questionnaires leave people more confused than when they started.
ADHDTestNow was built to change that.
By providing access to QBtech's FDA-cleared, computer-based ADHD assessment technology — the same tools trusted by healthcare professionals in clinical settings — we give individuals and their providers a clear, objective picture of attention, impulsivity, and activity patterns. No guessing. No bias. Just data you can actually use.
What Makes Us Different
FDA-Cleared Technology — We use QBtech, a globally recognized objective ADHD testing platform used by clinicians worldwide.
Performance-Based Data — Our assessments go beyond self-report checklists to measure real-time behavioral patterns.
Provider-Ready Reports — Results are structured to support meaningful conversations with your healthcare provider.
One Visit. Real Answers. — No lengthy processes. No unnecessary steps.
Owned & Operated by Diamond Global Healthcare — A Delaware-registered healthcare company committed to responsible, compliant, evidence-based care.
Dr. Mary Okonofua, DNP, PMHNP-BC, FNP-C, MBA
Psychiatric Mental Health & Family Nurse Practitioner. Licensed in Texas, Colorado, and Arizona
Fondly called "Dr. Mary" by her patients and students, Dr. Okonofua is the kind of provider who listens before she prescribes. Her approach to ADHD care is rooted in one core belief: you deserve to be heard before you are treated.
Dr. Mary currently serves as Covista Associate Professor in the Psychiatric Mental Health Nurse Practitioner Program and as Adjunct Faculty at Herzing University — bringing academic rigor and real-world clinical experience into every patient interaction.
As a dual board-certified practitioner with an MBA, she combines psychiatric expertise with structured, results-oriented care. Her signature "start low and go slow" prescribing philosophy prioritizes safety, individualization, and long-term wellness over quick fixes.
Whether you are a child, adult, or senior, Dr. Mary creates a culturally sensitive, empowering environment where seeking help is met with respect — because she understands that reaching out takes courage.
Meet the Clinical Team Behind ADHDTestNow
Our providers are not just credentialed — they are deeply committed to the people they serve. Each brings a unique combination of clinical expertise, academic leadership, and lived community connection to every patient interaction.
James Cardinal, LPC, MBA
Licensed Professional Counselor Serving Individuals, Couples, and Families in Colorado
With over 20 years of experience rooted in his home state of Colorado, James Cardinal has walked alongside hundreds of individuals through their most difficult seasons — from ADHD-related challenges to anxiety, grief, and relationship strain.
Currently completing his Doctoral program in Psychology, Mr. Cardinal brings both academic depth and community-level empathy to his practice. His trauma-informed approach is built on a simple but powerful premise: everyone struggles, but no one should have to struggle alone.
For families navigating the emotional weight of an ADHD journey — including the frustration, self-doubt, and relationship strain it can bring — Mr. Cardinal provides the specific, practical tools needed to move forward together.
Board-Certified Psychiatric Mental Health Nurse Practitioner. Licensed in Texas, Colorado, and Arizona
Blessing Iwuozo brings over seven years of diverse nursing experience — spanning emergency and psychiatric care — to her work with patients navigating ADHD, PTSD, Bipolar disorder, and beyond. Her calm, steady presence in the face of complex challenges is something patients consistently describe as transformative.
What sets Blessing apart is her collaborative, trauma-informed approach — one that replaces guilt with gratitude and overwhelm with a clear, personalized treatment path. She meets patients where they are, across diverse communities and life stages, and partners with them to build lasting stability.
For individuals who have spent years feeling dismissed or misunderstood, Blessing offers something rare: a provider who takes your story seriously and builds your care plan around it.
Blessing Iwuozo, MSN, PMHNP-BC
Our Commitment to Responsible ADHD Care
ADHDTestNow does not diagnose ADHD. What we do is give you — and your provider — objective, clinically meaningful data that makes the evaluation process faster, clearer, and more productive.
Every assessment we provide is:
Conducted using FDA-cleared QBtech technology
Designed to complement, not replace, clinical evaluation
Interpreted in collaboration with licensed healthcare professionals
Delivered with full transparency on cost, process, and expectations
We believe clarity is not a luxury — it is the foundation of good care.
Who We Serve
ADHDTestNow currently serves individuals in:
📍 Texas | Colorado | Arizona | Minnesota
Assessments are available for individuals ages 6–60. Those under 18 require parent or legal guardian involvement.
This assessment does not independently diagnose ADHD. Results are intended to support clinical evaluation by a qualified healthcare professional. ADHDTestNow is owned and operated by Diamond Global Healthcare, a Delaware corporation.
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