Text that reads 'Comprehensive Virtual Evaluations' with a glowing effect on a dark background.

Two visits. One clear fee.

  • ADHD evaluations

  • Adult Autism Evaluations

  • Personality testing

  • Other psychological assessments

Fully online with a licensed psychologist.

☎ Or call or text: (415) 255-5558

Licensed in California, Colorado, and North Dakota. More states coming soon.

Diagnosis Is the Beginning,
Not the Answer.

From the comfort of your home, we assess for ADHD, personality patterns, and related concerns. We look beyond a simple diagnosis to understand how these patterns affect the way you think, feel, relate to others, and handle daily life — so you leave with clearer understanding and practical next steps.

A wooden desk with a closed laptop, a notepad, and a pen. On the desk, there is a small glass vase with purple flowers and a modern cream-colored table lamp. The background includes beige curtains and a plain wall.
Calderon Diagnostic Institute infographic showing how an ADHD evaluation can support medication options, workplace accommodations, school accommodations, testing accommodations, autism trait screening for possible AuDHD, and next-step planning.

Driven By Curiosity. Designed to Stay Affordable.

A promotional graphic for the Calderon Diagnostic Institute highlighting comprehensive psychological evaluations, with a quote about diagnosis, and features representing services like ADHD and personality evaluations, virtual services, and personalized care, in a decorative style with gold accents and a mix of text and icons.

We don’t test just to test. We focus on the questions you actually want answered and use only the measures that help us get there. That keeps the evaluation thorough, focused, and worth what you’re paying for.

Adult using a tablet for a confidential telehealth consultation with Dr. Chad Calderon of Calderon Diagnostic Institute.

If ADHD or personality patterns are affecting your life, you deserve clear answers using gold standard measures.

We look past the symptoms. We focus on how much harder it is for you to focus, stay on track, and keep up with everyday life.

The goal is clarity, not just a diagnosis.

We provide:

  • Personalized feedback

  • Practical recommendations

  • A written diagnostic report.

Calderon Diagnostic Institute adult ADHD evaluation overview, including comprehensive intake, diagnostic interview, standardized instruments, differential diagnosis, feedback, and select child and adolescent ADHD evaluations by request.

*Select child and adolescent ADHD evaluations are available on a case-by-case basis. Please contact us to discuss fit. Fees may be higher due to additional time and coordination required.

Take Our Free Adult ADHD Self-Assessment Quiz

Calderon Diagnostic Institute adult ADHD self-assessment illustrating underlying patterns

5 minutes · 12 questions · Completely free

Your answers are confidential

Frequently Asked Questions

You’ll be asked to provide your first and last name, contact information, and a brief reason for reaching out.

Self-pay pricing for a comprehensive adult ADHD evaluation at Calderon Diagnostic Institute.

Ready for Diagnostic Clarity?

Calderon Diagnostic Institute Path Forward. ADHD and Executive Function evaluations image

Schedule a free 15-minute consultation to tell us a little about yourself and what you’re hoping we can help with. If you can, share why you’re looking for an ADHD evaluation or personality testing.

Call or text: (415) 255-5558 or email us by using one of the links below.

Meet Dr. Chad Calderon

  • Licensed Clinical Psychologist with an MSCP in Clinical Psychopharmacology

  • Experience in diagnostic, personality, neuropsychological, and forensic assessment

  • Background in clinical leadership, integrated healthcare, crisis response, and public systems

  • Worked alongside medical providers in primary care, inpatient, outpatient, and emergency settings

  • Consulted with courts, law enforcement, hospitals, educators, public agencies, and municipal leaders

  • Professional training and teaching in ADHD, executive functioning, neurobiology, psychopharmacology, and substance use treatment

  • Advanced training in psychoanalytic psychotherapy

  • All Calderon Diagnostic Institute services are provided under Dr. Calderon’s direct oversight.

Our Evidence-Based Approach: Research Guides Us

Start Your Journey

Complete the form below to tell us about your goals or questions. Dr. Calderon or a member of our team will personally review your inquiry and respond with tailored guidance.