Orange County, California

You've always known
you think differently.

Orange County's Neurodivergent Diagnostic Center

Comprehensive neuropsychological assessments for ADHD and autism with a special focus on adults, women, and those who've spent a lifetime masking.

Schedule a Consultation Learn More

Comprehensive ADHD Assessment

In-depth evaluation including clinical interview, standardized testing, and a thorough written report with personalized recommendations.

Affirming and Trauma-Informed

Dr. Bell specializes in high-masking presentations and understands how ADHD and autism often go unrecognized in women and adults.

10+
Years experience
All
Ages assessed
OC
Based in SoCal
Who We Serve

Finally getting answers
is for everyone.

Many people, especially women and adults, have been dismissed, misdiagnosed, or simply never evaluated. That changes here.

Women and Girls

ADHD and autism present differently in women and are chronically underdiagnosed. We understand the unique ways these conditions appear in female-identifying individuals.

High Maskers

If you've spent years appearing "fine" while struggling internally, your challenges are real. We're skilled at seeing through the mask to provide an accurate picture.

Adults Seeking Answers

It's never too late for an evaluation. Many adults come to us after years of confusion, burnout, or wondering why life feels harder than it seems to for others.

All Ages

From children through older adults, we provide thorough, age-appropriate assessments with compassionate care at every stage of life.

Our Services

What a comprehensive
assessment includes.

Every evaluation is individualized, thorough, and designed to give you and the people who support you a clear, actionable picture.

01

ADHD Neuropsychological Assessment

A multi-method evaluation covering attention, executive function, memory, and processing speed. Includes standardized tests, rating scales, clinical interview, and a detailed written report with diagnosis and recommendations.

02

Autism Spectrum (ASD) Assessment

A gold-standard evaluation using validated diagnostic tools and clinical observation. Sensitive to late-diagnosed presentations, atypical profiles, and women and adults who have learned to camouflage their traits.

03

Combined ADHD and ASD Evaluation

ADHD and autism frequently co-occur. A combined assessment disentangles these overlapping presentations and provides a comprehensive diagnostic picture.

04
New

Psychoeducational Assessment

A comprehensive evaluation of cognitive abilities, academic achievement, and learning processes. Designed to identify learning disabilities such as dyslexia and dyscalculia, processing difficulties, and to inform individualized education plans and 504 accommodations.

05
New

Standardized Test Accommodations

Targeted assessment and documentation for students seeking accommodations on the ACT, LSAT, MCAT, and other high-stakes standardized exams. Dr. Bell provides evaluations that meet the specific evidentiary requirements of each testing body.

06

Feedback and Recommendations Session

All evaluations include a thorough feedback session where Dr. Bell walks through findings, answers questions, and provides individualized strategies, referrals, and written documentation for accommodations.

07

Academic and Workplace Accommodation Letters

If you need documentation for school, university, or workplace accommodations, Dr. Bell provides detailed letters and reports that meet institutional requirements.

08

Second Opinion and Records Review

Already have a prior evaluation you're unsure about? Dr. Bell offers records reviews and second-opinion consultations to help you navigate complex or unclear diagnostic histories.

Dr. Bell, Ph.D.
About Dr. Bell

A psychologist who
listens differently.

Ph.D., Clinical Psychology Licensed in California Neuropsychological Assessment ADHD Specialist ASD Late Diagnosis Women and High Maskers

Dr. Bell is a licensed clinical psychologist with over 10 years of experience conducting neuropsychological assessments across the lifespan. She specializes in evaluating adults and women who have often been overlooked by conventional diagnostic approaches.

Her practice is built on the understanding that ADHD and autism present differently across genders, and that many of her clients arrive having spent years being told they're "too smart," "too sensitive," or "just anxious." She knows how to look deeper.

Dr. Bell takes a neurodiversity-affirming, trauma-informed approach meaning your evaluation is never about what's "wrong" with you, but about understanding how your brain works and helping you build a life that works with it.

"Answers don't change who you are. They change how you understand yourself."

Fees and Insurance

Transparent, honest
pricing.

ADHD Assessment
$3,000+
Includes testing, report and feedback session
  • Clinical interview (1 to 1.5 hrs)
  • Standardized testing (2 to 3 hrs)
  • Comprehensive written report
  • 60-min feedback and recommendations session
ASD Assessment
$3,000+
Includes testing, report and feedback session
  • Structured clinical interview
  • Standardized testing and/or ADOS-2 administered
  • Collateral history and rating scales
  • 60-min feedback and recommendations session
Psychoeducational Assessment
$5,000+
Includes testing, report and feedback session
  • Cognitive and academic achievement testing
  • Learning disability identification
  • Processing and memory evaluation
  • IEP and 504 accommodation documentation
  • 60-min feedback and recommendations session
Exam Accommodation Testing
$3,000+
ACT, LSAT, MCAT and other standardized exams
  • Targeted evaluation meeting testing body requirements
  • Standardized testing and rating scales
  • Documentation of disability and functional limitations
  • Formal accommodation request report
  • Support through the accommodation application process

Out-of-network provider.

OC Neurodivergent Diagnostic Center is a private-pay, out-of-network practice. We do not bill insurance directly. Payment is due at time of service.

Many clients are able to use HSA and FSA funds to cover assessment costs. We recommend checking with your account provider.

A sliding scale is available on a limited basis for clients who demonstrate financial need. Please inquire during your consultation call.

Superbills and out-of-network reimbursementDr. Bell provides detailed superbills that you can submit to your insurance for potential partial reimbursement. We recommend calling your insurer before scheduling to understand your out-of-network mental health benefits.
Free 20-minute consultationWe offer a complimentary phone consultation to answer questions, discuss your history, and help you decide if our practice is the right fit before any commitment.
Frequently Asked Questions

Questions we hear
most often.

Still not sure if an assessment is right for you? These might help.

Can I really be diagnosed with ADHD or autism as an adult?

Absolutely. ADHD and autism are lifelong neurological differences, not conditions that only apply to children. Many adults go undiagnosed for decades, particularly women and those who learned to compensate or mask their challenges.

What if I'm too high-functioning for a diagnosis?

High performance does not rule out ADHD or autism. Many intelligent and capable people are undiagnosed precisely because they've developed sophisticated coping strategies. The internal experience still matters and Dr. Bell is trained to see it.

How long does the assessment process take?

The full assessment process typically spans 3 to 4 weeks, including an intake call, the evaluation sessions (usually 1 to 2 appointments), report writing, and a feedback session. Some timelines vary based on complexity.

Do you assess children as well as adults?

Yes. While Dr. Bell's specialty is adults and high-masking presentations, the practice assesses individuals across all ages. Please reach out to discuss whether our approach is the right fit for younger clients.

What do I get at the end of the process?

You'll receive a comprehensive written report with test results, clinical impressions, a diagnosis (if applicable), and individualized recommendations for treatment, accommodations, and support. Dr. Bell also reviews this with you in a dedicated feedback session.

Can a diagnosis help me at work or school?

Yes. A formal diagnosis from a licensed psychologist is typically required to access workplace and academic accommodations such as extended time, quiet testing environments, flexible scheduling, and more. Dr. Bell's reports are written to meet institutional standards.

Is a diagnosis required before seeing a psychiatrist?

No, a formal diagnosis is not required to see a psychiatrist. However, having a comprehensive neuropsychological evaluation before your first psychiatric appointment can be enormously helpful. A thorough assessment gives your psychiatrist a detailed, evidence-based picture of your cognitive profile, ruling out conditions that may mimic one another and clarifying whether symptoms are consistent with ADHD, autism, or another presentation. This can lead to more accurate treatment planning, better-informed medication decisions, and a much smoother experience overall. Many clients find that arriving with a clear diagnostic report significantly shortens the path to the right care.

Testimonials

Heard from those
who have been there.

The experiences of our clients speak to what a diagnosis and the right support can truly mean.

“

Dr. Bell saved me with her help and diagnosis. She took the time to listen, offer feedback, and helped me with other personal situations. She is a game changer. I would recommend her to anyone who grew up feeling the way I did.

SL
Sarah L.
Assessment client
“

Dr. Bell is absolutely amazing! Others dismissed my son's neurodivergent symptoms, but she took the time to truly listen and was very thorough which led to his proper diagnosis. She is able to connect with my son and provides a safe space for him which allows him to improve. My son is now getting the services he needs all thanks to Dr. Bell!

HS
Haylee S.
Parent of a client
“

I can't thank Dr. Bell enough for being so kind and helpful. It can be so hard finding someone that's really compatible, but I look forward to every time that I see her.

CF
Christian F.
Assessment client
Resources and Insights

From the Practice

Writing from Dr. Bell on diagnosis, assessment, and the clinical work happening inside the practice.

Autism · By Dr. Bell

How Autism Presents Differently in Women & Girls

Autism looks different in women and girls — and that difference has led to decades of missed and late diagnoses. Dr. Bell explains the signs, the science, and why it matters.

Read full article →
Get in Touch

You deserve clarity.
Let's start here.

Complete the form below and we'll be in touch within 2 business days to schedule your complimentary 20-minute consultation.

LocationOrange County, California
Telehealth available throughout CA
Phone(949) 903-2145
Office HoursMonday through Friday, 9am to 5pm
Limited evening availability
All inquiries are kept strictly confidential. Dr. Bell personally reviews each request and responds with care. We understand that reaching out takes courage. Thank you for trusting us with your story.