Marcus Nielson, NP


2355 East Camelback Road Suite 625

Phoenix, AZ 85016

Open today 6 AM - 8 PM

Marcus Nielson, NP

Nurse Practitioner

(Reviews Coming Soon)

Serenity Mental Health Centers

Serenity Mental Health Centers is a group of mental health practices with locations in multiple states.

Our goal is to provide personalized treatment to each and every one of our patients, which is why we offer a variety of treatment options, including transcranial magnetic stimulation (TMS therapy), ketamine infusion, and medication management.

Serenity’s clinical team of board-certified psychiatrists are experienced in treating a variety of complex mental illnesses across a wide range of patients, including individuals who have struggled to find an effective treatment for their condition in the past. Our Medical Director personally oversees and trains our staff to ensure they are prepared to supply you with the tools and support to succeed in your recovery.


We offer a variety of treatments to meet the needs of every patient in search of psychiatric care, including options such as:

TMS Therapy
Transcranial magnetic stimulation (TMS) is a safe, non-invasive treatment option for depression, OCD, PTSD, anxiety, and other mental illnesses.

Ketamine Infusion
In recent years, ketamine therapy has emerged as an extraordinarily successful treatment for those who have not experienced lasting results from other treatment options.

Medication Management
Medications such as antidepressants are a common mental health treatment. Many patients find symptom relief with medication, but it’s important to find the most effective medication or combination of medications for your condition. A professional psychiatrist can help you to determine your best options.

ADHD Testing
At Serenity, we use the QbTest to diagnose children, adolescents, and adults with ADHD.


Serenity offers TMS and ketamine therapy as a treatment option for many mental health conditions, including:

There are many distinct types of depression, including major depressive disorder (MDD), postpartum depression, treatment-resistant depression, seasonal affective disorder (SAD), and more.

Anxiety disorders include diagnoses of panic disorder, social anxiety disorder, specific phobias, or obsessive-compulsive disorder.

Obsessive-Compulsive Disorder (OCD)
Compulsions can manifest in the form of excessive cleaning, repetitive actions, arranging things in a precise way, repeatedly checking things such as light switches or locked doors, and compulsive counting.

ADHD contains three subtypes: primarily inattentive, primarily hyperactive-impulsive, and combined, which includes symptoms of both inattentive and hyperactive-impulsive. ADHD treatment options such as medication management can help patients to manage symptoms.

Serenity also treats other conditions such as post-traumatic stress disorder (PTSD) and bipolar disorder.


Serenity’s values center around our mission to provide communities with accessible and affordable mental health care. Our patient-centered care philosophy ensures that every patient finds an effective treatment with lasting results.

We understand that everyone deserves a unique treatment approach, and we’ll work with you to understand your condition while supplying you with the resources to make an informed decision for your treatment plan.

For patients in search of personalized psychiatric care, Serenity offers a chance at remission from mental illness.


To schedule an immediate consultation with one of our board-certified psychiatrists or to learn more about our mental health services, contact us via our online form or give us a call at (801) 758-8948


Serenity Mental Health Centers - Biltmore, AZ

Psychiatry in Phoenix, AZ

Serenity Mental Health Centers - Biltmore, AZ

2355 East Camelback Road

Suite 625

Phoenix, AZ 85016

Open today 6 AM - 8 PM

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    *Individual results are not guaranteed and may vary from person to person. Images may contain models.