Skip to main content
Call to Book with Arun

Psychiatrist in Nashua, New Hampshire Arun Krishnan, Psychiatrist

Gender Identity: Male (He/Him)

Ages Served: 3-40

Appointments: In-office and Online

Manages Medications: Yes

Accepts Insurance: Yes - View accepted plans

Arun Krishnan, Psychiatrist

Arun Krishnan, MD

Specializes In:

ADHD
Anxiety
Attention & focus
Obsessive Compulsive Disorder
Panic attacks
Stress management
See all specialties >

Part of Dr. Krishnan’s clinical time is devoted to working with resident physicians from Portsmouth Regional Hospital-HCA Healthcare/Tufts University. Resident physicians are licensed doctors who have completed medical school and are finalizing their specialty training in psychiatry. They are currently completing their 3rd postgraduate year of training at LifeStance Health, Inc. Your initial appointment may either be solely with Dr. Krishnan, or may be with a resident physician with Dr. Krishnan joining towards the end of the appointment to review history, current symptoms, and discuss the plan of care with the resident physician. You would continue to see your resident physician throughout the year and Dr. Krishnan would continue to be involved in your care. Residents change each year in July, but Dr. Krishnan would stay constant as the supervising psychiatrist. Accepts ages: 5-40 Arun Krishnan M.D. For Telehealth visits, patient must be located in New Hampshire or Massachusetts during the appointment. The patient should be present and willing to be on screen. If under 18, please have the current weight and height and a legal guardian should be present in addition as well. Dr. Krishnan is a licensed, board-certified psychiatrist with a sub-specialty in Child and Adolescent Psychiatry. He was trained in general, child and adolescent psychiatry at Brookdale Hospital Medical Center, Brooklyn, NY where he completed his residency and fellowship. After finishing fellowship, he had worked in inpatient, residential and outpatient psychiatric settings. He is providing tele-psychiatry and in-office appointments in Nashua, NH. Dr. Krishnan focus is primarily psychiatric evaluations/medication management, psychotherapy is occasionally added to his follow up if need be. He will be happy to provide referrals for psychotherapy, if appropriate, as medications-only might not be the best approach for many youths. He has special interests in ADHD, OCD, DMDD, Depression, anxiety, including Selective Mutism, trauma, Autism, and mood disorders including Bipolar disorder. Lifestance is partnering with Portsmouth Regional Hospital (now an HCA facility) and Tufts University School of Medicine to offer outpatient clinical experiences to their resident physicians in psychiatry. Please note that if you book with Dr. Krishnan, part of your visit may be with one of our resident physicians, including visits moving forward.

Types of Care & Ages Served

Areas of Focus

Psychiatry/Medication Management

Treat and prevent mental health disorders using medication and therapy.

  • ADHD
  • Anxiety
  • Attention & focus
  • Obsessive Compulsive Disorder
  • Panic attacks
  • Stress management
  • Autism: generally independent
  • Bipolar Disorder
  • Bullying or harassment
  • Childhood behavioral issues
  • Depression/feeling down
  • Eating issues: binging
  • Hoarding
  • Intense mood changes
  • Learning challenges
  • School behavioral issues
  • Self-esteem

Languages

  • English
  • Malayalam

Education

  • University of Kerala

FAQs

Please call us at 603-204-5098 to schedule an appointment with Arun Krishnan.

Already have an appointment?

Video visit waiting room Join Now
Existing patient portal Sign in

See what our patients are saying about Arun Krishnan

My psychiatrist and therapist are at LifeStance in Nashua and the office staff is very kind and accommodating. My appointments are never rushed and everyone genuinely listens to my concerns.
Read Full Review
Sydney M.

Sydney M.

Jan 16, 2026
Google Google
Seems like a genuinely good person. Really went into details with me showing he cared about making sure what he was prescribing was right. Definitely recommend!
Read Full Review
Jackson S.

Jackson S.

Dec 29, 2025
Google Google
Amazing experience! Did not feel rushed. Dr Krieshna is so professional and down to earth. Immediate and practical suggestions. NH is lucky to have him!
Read Full Review
Meredith B.

Meredith B.

Sep 12, 2024
Google Google
My child sees Dr. Krishnan. He really listens to her. He takes the time to explain everything to me too. I could not be happier with his care.
Read Full Review
Leah S.

Leah S.

Oct 30, 2023
Google Google
Excellent experience
Read Full Review
Ryan P.

Ryan P.

Jun 08, 2023
Google Google
Clicking on the button will update the content above.

Patient Review Disclaimer

The testimonials and reviews shared on our platforms reflect the personal experiences and opinions of individuals voluntarily shared on third-party sites (e.g., Google). These reviews are voluntarily provided and are not compensated, solicited, or endorsed by LifeStance Health.

Important Notes:

  • Reviews do not represent the views of LifeStance Health, Inc., its clinicians, or affiliates
  • Individual results may vary – testimonials are not guarantees of similar outcomes
  • We do not independently verify the clinical accuracy or authenticity of statements
  • Clinician qualifications, expertise, and fit for your specific needs should be assessed through direct consultation

Additional Providers At This Location