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Dr. Guillermo Ethier, DNP

Dr. Guillermo Ethier, DNP

Family Psychiatric & Mental Health Nurse Practitioner
29201 Telegraph Rd, Southfield, MI
Guillermo Ethier, PMHNP, helps patients build stability, clarity, and confidence through thoughtful psychiatric medication management tailored to their unique needs. Serving children, adolescents, teens, adults, and seniors across Michigan, he partners with individuals and families navigating mental health and substance use challenges, offering care that balances clinical precision with genuine compassion. Guillermo practices at LifeStance Health and supports patients at every stage of life, from school-age children to older adults, with a focus on improving daily functioning and overall quality of life. As a psychiatric prescriber, Guillermo specializes in medication management for ADHD, anxiety, and mood disorders such as depression and bipolar disorder, while also treating alcohol and drug use issues through evidence-based medication approaches. He works with children and adolescents experiencing behavioral or emotional concerns, as well as adults facing midlife and later-life transitions. Guillermo integrates Cognitive Behavioral Therapyâinformed principles, mindfulness strategies, and collaborative decision-making into his care, and offers additional areas of focus to meet diverse mental health needs. He also serves select populations including individuals on the autism spectrum, members of the LGBTQ+ community, and military veterans. Guillermo is particularly passionate about supporting individuals who have been recently discharged from a psychiatric hospital. He understands that this transition can feel overwhelming and vulnerable, and he prioritizes continuity of care, medication stabilization, and relapse prevention during this critical period. By providing close follow-up, clear education, and coordinated outpatient treatment, he helps patients regain a sense of safety, rebuild routines, and reduce the risk of rehospitalization.
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About Dr. Guillermo Ethier

Focus areas

Addiction / Substance Abuse
Bipolar Disorder
Eating Disorder
Anxiety
Childhood Trauma
Attention-Deficit / Hyperactivity Disorder (ADHD)
Depression

Clientele seen

Children (<13)
Adults (25-64)
Families
Teenagers (13-17)
Seniors (65+)
Young adults (18-24)
Individuals

Treatment approaches

Cognitive Behavioral (CBT)
Integrative
Mindfulness-Based (MBCT)

Identity

Gender

Male

Languages spoken

English

Getting to know Dr. Guillermo Ethier

Guillermo Ethier, PMHNP, helps patients build stability, clarity, and confidence through thoughtful psychiatric medication management tailored to their unique needs. Serving children, adolescents, teens, adults, and seniors across Michigan, he partners with individuals and families navigating mental health and substance use challenges, offering care that balances clinical precision with genuine compassion. Guillermo practices at LifeStance Health and supports patients at every stage of life, from school-age children to older adults, with a focus on improving daily functioning and overall quality of life. As a psychiatric prescriber, Guillermo specializes in medication management for ADHD, anxiety, and mood disorders such as depression and bipolar disorder, while also treating alcohol and drug use issues through evidence-based medication approaches. He works with children and adolescents experiencing behavioral or emotional concerns, as well as adults facing midlife and later-life transitions. Guillermo integrates Cognitive Behavioral Therapyâinformed principles, mindfulness strategies, and collaborative decision-making into his care, and offers additional areas of focus to meet diverse mental health needs. He also serves select populations including individuals on the autism spectrum, members of the LGBTQ+ community, and military veterans. Guillermo is particularly passionate about supporting individuals who have been recently discharged from a psychiatric hospital. He understands that this transition can feel overwhelming and vulnerable, and he prioritizes continuity of care, medication stabilization, and relapse prevention during this critical period. By providing close follow-up, clear education, and coordinated outpatient treatment, he helps patients regain a sense of safety, rebuild routines, and reduce the risk of rehospitalization.

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In-network insurances

Aetna
BlueCross BlueShield
Cigna
UnitedHealthcare
200+ more in-network plans

Popular visit reasons

Agoraphobia
Attention-Deficit / Hyperactivity Disorder (ADHD)
Depression
New Patient Visit
Pediatric Tics / Tourette Syndrome
Psychiatry Consultation
Sleep Problems
Young Adult Issues
Agoraphobia
Attention-Deficit / Hyperactivity Disorder (ADHD)
Depression
New Patient Visit

Office location

Dr. Guillermo Ethier, DNP also offers online video visits for patients
LifeStance Health - Michigan
29201 Telegraph Rd, Southfield, MI 48034
Get directions

Education and background

Practice names

Education and training

  • University of Michigan, Doctor of Nursing Practice
  • University of Puerto Rico at Río Piedras (Bachelor's)

NPI number

1154012433

Patient reviews

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Frequently asked questions

How soon can I make an appointment with Dr. Guillermo Ethier?

Generally, Dr. Guillermo Ethier has appointments available on Zocdoc within 1 week. You can see Dr. Ethier's earliest availability on Zocdoc and make an appointment online.

Is Dr. Guillermo Ethier accepting new patients?

Dr. Guillermo Ethier generally accepts new patients on Zocdoc. You can see Dr. Ethier's earliest availability on Zocdoc and schedule an appointment online.

Does Dr. Guillermo Ethier accept my insurance?

Choose your insurance plan to verify if Dr. Ethier is in-network.

Can I make an appointment with Dr. Guillermo Ethier online?

Yes, you can make an appointment online with Dr. Ethier using Zocdoc. It’s simple, secure, and free.

What practice does Dr. Guillermo Ethier work with?

Where is Dr. Guillermo Ethier's office located?

Dr. Guillermo Ethier has 2 office locations in Southfield, view full addresses on Dr. Ethier's profile.

What are common reasons for patients to see Dr. Guillermo Ethier?

Dr. Guillermo Ethier frequently sees patients for Attention-Deficit / Hyperactivity Disorder (ADHD), Depression, New Patient Visit, Psychiatry Consultation, and Sleep Problems. You can see other visit reasons for Dr. Guillermo Ethier on their profile.

What languages does Dr. Guillermo Ethier speak?

Dr. Guillermo Ethier speaks English.

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