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Rancho Palos Verdes office building, 29000 S Western Ave Review symptoms and prior treatment

Long Beach, California

ADHD Assessment & Treatment in Long Beach

Comprehensive ADHD evaluation that investigates medical causes of focus issues before diagnosis

Most new patients are seen within days

VisitsServing Long Beach via Rancho Palos Verdes office

Call(310) 955-1041

NearbyServing: Lakewood • Signal Hill • Carson • Cerritos • Bellflower • Downey

Our Approach in Long Beach

Why Focus Problems Need Medical Investigation

Many Long Beach residents struggle with focus, concentration, and productivity — and assume it must be ADHD. A meaningful share of focus problems have medical contributors that a symptom checklist alone will miss.

Before diagnosing ADHD, we investigate whether thyroid dysfunction, iron deficiency, sleep disorders, or other medical factors are causing your symptoms. When these conditions are treated, many patients experience significant improvement—sometimes without ADHD medication.

We bring diagnostic rigor from critical care medicine to psychiatric care. Your evaluation includes comprehensive lab work and medical assessment—not just a symptom checklist.

Symptoms We Evaluate

Common ADHD Symptoms in Adults

  • Difficulty maintaining focus on tasks or conversations
  • Easily distracted by unrelated thoughts or stimuli
  • Trouble with organization and time management
  • Frequently losing things necessary for tasks
  • Difficulty following through on instructions
  • Avoiding tasks requiring sustained mental effort
  • Forgetfulness in daily activities

What We Investigate

Medical Conditions That Mimic ADHD

These conditions cause focus problems identical to ADHD—and won't respond to ADHD medication

  • Thyroid Dysfunction

    Even mild hypothyroidism causes cognitive slowing, brain fog, and difficulty concentrating

  • Iron Deficiency

    Low ferritin impairs dopamine synthesis—the same neurotransmitter targeted by ADHD medications

  • Sleep Disorders

    Sleep apnea and insomnia create symptoms identical to ADHD

  • Vitamin Deficiencies

    B12, folate, and vitamin D deficiencies affect cognitive function and focus

Our Process

How We Approach ADHD in Long Beach

  1. Thorough EvaluationInitial assessment of ADHD symptoms, history, and relevant medical factors.
  2. Medical InvestigationLab work to identify thyroid, iron, vitamin, and other factors that mimic or worsen ADHD.
  3. Personalized TreatmentTreatment plan addressing root causes—whether true ADHD, medical factors, or both.

Why Long Beach Residents Choose Us

Comprehensive ADHD Care in Long Beach, California

  • Comprehensive medical workup before any ADHD diagnosis
  • Diagnostic rigor from critical care medicine—complex cases are our specialty
  • Appointment availability varies
  • California telehealth and Rancho Palos Verdes in-person care when clinically appropriate
  • Board-certified psychiatric nurse practitioner
  • Ask us to check your plan

Common Questions

ADHD Assessment FAQ for Long Beach

How do I get an ADHD assessment in Long Beach?

Horizon Peak Health serves Long Beach residents through California telehealth and the Rancho Palos Verdes office when in-person care is clinically appropriate. The evaluation reviews medical factors that can resemble ADHD when clinically indicated.

What makes your ADHD evaluation different?

Unlike standard ADHD assessments that rely on symptom checklists, we investigate medical causes of focus problems. We investigate underlying conditions with medical rigor. Lab work is included to check thyroid, iron, vitamins, and other factors that cause ADHD-like symptoms.

Do you accept insurance for ADHD treatment?

Whether we are in network depends on your plan, treating clinician, state, and visit type. A benefits check is not a payment guarantee. Contact us for verification of your specific plan coverage.

Can I do telehealth for ADHD evaluation?

Yes, California residents can complete ADHD evaluations via secure telehealth video visits. This is especially convenient for Long Beach, Lakewood, Signal Hill, and other Los Angeles County residents.

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How long until I can get an appointment?

Appointment availability varies. Our team confirms the next available evaluation and visit format during the request process. Initial evaluations leave room to review the history, symptoms, and unanswered diagnostic questions.

What areas near Long Beach do you serve?

We serve Long Beach and surrounding Los Angeles County areas including Lakewood, Signal Hill, Carson, Cerritos, Bellflower, Downey. California residents can also access care via telehealth.

Serving Long Beach

Conveniently Located for Long Beach Residents

Our Rancho Palos Verdes location serves Long Beach and surrounding Los Angeles County communities

Contact Information

29000 S Western Ave STE 205
Rancho Palos Verdes, CA 90275

Areas Served

  • Lakewood
  • Signal Hill
  • Carson
  • Cerritos
  • Bellflower
  • Downey
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Directions from Major Landmarks
  • Torrance Memorial Medical Center

    Take Western Ave south through Torrance, continue into Rancho Palos Verdes. Office is in the professional building on the right.

    6 miles~12-15 min

  • LAX Airport

    Take I-405 S to Western Ave exit, head south through Torrance to Rancho Palos Verdes.

    15 miles~25-35 min

  • Long Beach Airport

    Take I-405 N to I-110 S, exit at Western Ave in San Pedro, head south into Rancho Palos Verdes.

    18 miles~30-40 min

  • Terranea Resort

    Head east on Palos Verdes Dr S to Western Ave, turn north. Office is about 1 mile on the left.

    4 miles~10-12 min

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Other Locations

We also serve patients at these locations

Ready for Comprehensive ADHD Evaluation in Long Beach?

Appointment availability varies. Our team confirms the next available evaluation and visit format during the request process. Ask us to check your plan.

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A consult room in the San Francisco office