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Dr. Mark Alter, MD

Dr. Mark Alter, MD

Psychiatrist
551 W Lancaster Ave, Ste 306, Haverford, PA
Dr. Mark Alter, MD, helps children, teens, adults, and seniors across Pennsylvania manage complex mental health challenges and achieve lasting emotional well-being. At LifeStance Health, he provides individualized care through medication management and therapy, supporting clients with anxiety, depression, ADHD, and trauma-related concerns. Serving communities throughout PA, Dr. Alter emphasizes a collaborative approach that engages clients and families, empowering them to understand their experiences, strengthen coping skills, and reach meaningful treatment goals. He is particularly passionate about working with clients who are recently discharged from psychiatric hospitals. Dr. Alter brings expertise in addressing a wide range of conditions, including bipolar disorder, substance use issues, and post-traumatic stress, and he tailors treatment to each client's needs using evidence-based approaches. His clinical practice integrates strategies such as CBT for insomnia alongside comprehensive psychiatric evaluation and personalized care planning. He works with diverse populations, including LGBTQ+ individuals, men, women, first responders, military and veterans, and clients with developmental or neurological considerations, providing a supportive, affirming environment for growth and recovery. Dr. Alter emphasizes practical, goal-oriented treatment that aligns with clients' personal and medical contexts. He collaborates closely with therapists, primary care providers, schools, and community partners when appropriate, ensuring continuity of care and coordinated support. His approach combines clinical expertise with compassion, fostering an environment where clients feel empowered to navigate challenges and develop resilience. Outside of his clinical work, Dr. Alter enjoys spending time with family, traveling, playing tennis and skiing, exploring neuroscience research, optimizing systems, and investing in real estate.

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Available appointments

About Dr. Mark Alter

Focus areas

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

Clientele seen

Children (<13)
Individuals
Teenagers (13-17)
Families
Young adults (18-24)

Treatment approaches

Cognitive Behavioral (CBT)

Identity

Gender

Male

Languages spoken

English

Getting to know Dr. Mark Alter

Dr. Mark Alter, MD, helps children, teens, adults, and seniors across Pennsylvania manage complex mental health challenges and achieve lasting emotional well-being. At LifeStance Health, he provides individualized care through medication management and therapy, supporting clients with anxiety, depression, ADHD, and trauma-related concerns. Serving communities throughout PA, Dr. Alter emphasizes a collaborative approach that engages clients and families, empowering them to understand their experiences, strengthen coping skills, and reach meaningful treatment goals. He is particularly passionate about working with clients who are recently discharged from psychiatric hospitals. Dr. Alter brings expertise in addressing a wide range of conditions, including bipolar disorder, substance use issues, and post-traumatic stress, and he tailors treatment to each client's needs using evidence-based approaches. His clinical practice integrates strategies such as CBT for insomnia alongside comprehensive psychiatric evaluation and personalized care planning. He works with diverse populations, including LGBTQ+ individuals, men, women, first responders, military and veterans, and clients with developmental or neurological considerations, providing a supportive, affirming environment for growth and recovery. Dr. Alter emphasizes practical, goal-oriented treatment that aligns with clients' personal and medical contexts. He collaborates closely with therapists, primary care providers, schools, and community partners when appropriate, ensuring continuity of care and coordinated support. His approach combines clinical expertise with compassion, fostering an environment where clients feel empowered to navigate challenges and develop resilience. Outside of his clinical work, Dr. Alter enjoys spending time with family, traveling, playing tennis and skiing, exploring neuroscience research, optimizing systems, and investing in real estate.

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In-network insurances

Aetna
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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. Mark Alter, MD also offers online video visits for patients
LifeStance Health - Pennsylvania
551 W Lancaster Ave, Ste 306, Haverford, PA 19041
Get directions

Education and background

Practice names

Board certifications

  • American Board of Psychiatry and Neurology
  • Child & Adolescent Psychiatry (American Board of Psychiatry and Neurology)

Education and training

  • Medical School - University of Pittsburgh School of Medicine, Doctor of Medicine
  • Butler Hospital, Residency in Psychiatry
  • NewYork-Presbyterian / Weill Cornell Medical Center, Fellowship in Child and Adolescent Psychiatry

NPI number

1730263617

Patient reviews

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Frequently asked questions

How soon can I make an appointment with Dr. Mark Alter?

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

Is Dr. Mark Alter accepting new patients?

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

Does Dr. Mark Alter accept my insurance?

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

Can I make an appointment with Dr. Mark Alter online?

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

What practice does Dr. Mark Alter work with?

Where is Dr. Mark Alter's office located?

Dr. Mark Alter has 2 office locations in Haverford, view full addresses on Dr. Alter's profile.

Which board certifications does Dr. Mark Alter have?

Dr. Mark Alter is certified by American Board of Psychiatry and Neurology and Child & Adolescent Psychiatry (American Board of Psychiatry and Neurology).

What are common reasons for patients to see Dr. Mark Alter?

Dr. Mark Alter 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. Mark Alter on their profile.

What languages does Dr. Mark Alter speak?

Dr. Mark Alter speaks English.

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Zocdoc›Bryn Mawr, PA Psychiatrists›Dr. Mark Alter, MD