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Diagnostic psychiatry investigation approach at Horizon Peak Health

A Different Approach to Psychiatry

When a Diagnosis Doesn't Explain the Whole Pattern

We review your symptoms, medication history, sleep, and medical history together before deciding what to do next.

Insurance Plans We Verify Before Scheduling

Plans we can check

  • Aetna
  • Anthem Blue Cross
  • Blue Cross Blue Shield
  • UnitedHealthcare / Optum / Oxford
  • Medicare
  • Oscar Health
  • Providence Health Plan
  • Cigna / Evernorth
  • Carelon Behavioral Health (California only)
  • Curative (Canybec Sulayman, AZ & CA)

Self-pay: Canybec Sulayman $450 initial; Sharon Hernandez $350 initial (California only). Follow-up visits $150.

Network participation varies by clinician, state, and specific plan or product. Our team checks your exact benefits before an evaluation is confirmed. A listed plan does not establish in-network status; benefits verification does not guarantee coverage or your final cost.

19

Years ICU Experience

7+

ICU Specialties

2

State Licenses (CA & AZ)

History

Reviewed in the Initial Evaluation

Is This For You?

You Might Be Our Ideal Patient If...

If symptoms persist or the diagnosis feels incomplete, a closer review may help clarify the next step.

Tried Multiple Medications

You've tried medication without enough improvement and want a closer look at the diagnosis, treatment history, and medical factors.

Exhausted Despite Sleep

You wake up tired despite enough time in bed and want sleep, medication effects, and medical history reviewed together.

Brain Fog & Focus Issues

Concentration problems, memory issues, mental sluggishness—and you're wondering if it's ADHD or something else entirely.

Anxiety That Won't Quit

We review racing heart, persistent worry, and physical tension alongside your sleep, medication history, and medical history.

The Diagnostic Psychiatry Method

How We Review the Full Picture

We start with your history, then decide which medical and psychiatric questions need a closer look.

01

Start With Your History

The initial evaluation covers symptoms, prior treatment, sleep, and relevant medical history.

History

reviewed before treatment

02

Check What Matters

We review existing results and consider targeted testing when your history or symptoms give us a reason to check.

As needed

testing follows the clinical question

03

Explain the Plan

We discuss what the findings mean for diagnosis and treatment. Medication and follow-up depend on your needs.

Follow-up

based on the findings

The Difference

Questions We Bring Into the Evaluation

Clinical Question

What We Review

What has already been tried?

Medication response, side effects, and prior treatment

Could sleep be part of it?

Sleep pattern, timing, and daytime function

Could health factors matter?

Medical history and tests when indicated

What happens next?

Findings, treatment options, and follow-up

What to Expect

From Request to Care Plan

The team reviews your request first. The evaluation and any testing follow the clinical question.

1

Request an Evaluation

First step

Send a request through the contact page. Our team reviews fit, location, and insurance details before placing a visit on the schedule.

2

Prepare for Your Visit

Before your visit

Our team will tell you which forms and prior records to send before the evaluation.

3

Initial Evaluation

Confirmed when scheduled

A visit to review your symptoms, treatment history, sleep, and medical factors that may matter.

4

Testing When Indicated

As needed

We can review prior results. New tests depend on what the evaluation shows.

5

Care Plan

After the evaluation

We explain the working diagnosis and next steps. Treatment and follow-up depend on the findings.

Canybec Sulayman credentials and authority markers

Founder and Clinical Team

Horizon Peak Health was founded by Canybec Sulayman, PMHNP-BC, MBA. The practice now includes Sharon Hernandez, PMHNP-BC, a California psychiatric-mental health nurse practitioner whose clinical interests include mood and anxiety disorders, trauma and recovery, adult ADHD, LGBTQIA+ mental health, and perimenopause.

Canybec Sulayman, PMHNP-BC

Canybec Sulayman, PMHNP-BC

My 19 years across 7+ ICU specialties shape how I review medical clues alongside psychiatric symptoms. When a treatment isn't helping enough, I want to understand the pattern before changing the plan. What else could explain what you're feeling?

Meet Canybec
Sharon Hernandez, PMHNP-BC

Sharon Hernandez, PMHNP-BC

Sharon provides trauma-informed psychiatric care for California adults. She pays particular attention to the overlap among mood, anxiety, trauma, substance use and recovery, ADHD, identity, sleep, concentration, and the mental health changes that can accompany perimenopause.

Ready for a Closer Look?

Request an evaluation. Routine in-person care is available in Gilbert, Arizona, and Rancho Palos Verdes, California. Telehealth is available in Arizona and California. Ask our team about current appointment options.

Request an Evaluation