Skip to main content
Call to Book with Catherine

Psychiatry in Melville, New York Catherine Costa Gardyn, Nurse Practitioner

Gender Identity: Female (She/Her)

Ages Served: 18-74

Appointments: In-office and Online

Manages Medications: Yes

Accepts Insurance: Yes - View accepted plans

Catherine Costa Gardyn, Nurse Practitioner

Catherine Costa Gardyn, MSN, PMHNP-BC

Specializes In:

Anxiety
Depression/feeling down
Panic attacks
Self-esteem
Stress management
See all specialties >

Catherine Costa is a Board-Certified Psychiatric Mental Health Nurse Practitioner in New York who has been practicing since 2013. Catherine started her journey within the medical field as an LPN many years ago. Subsequently she attained her Masters as a Registered Nurse and later her Post Masters Certificate as a Nurse Practitioner. Catherine believes in providing a holistic approach with compassion, empathy, and education. Catherine is committed to staying current within both the medical and psychiatric fields with an active participation in conferences, seminars, and electronic media. Outside of work, Catherine enjoys art, drawing, museums, outdoor activities, and community involvement.

Types of Care & Ages Served

Areas of Focus

Individual Therapy

Get help addressing challenges and improve well-being with a clinician's guidance.

Psychiatry/Medication Management

Treat and prevent mental health disorders using medication and therapy.

  • Anxiety
  • Depression/feeling down
  • Panic attacks
  • Self-esteem
  • Stress management
  • Ability status
  • ADHD
  • Aging
  • Anger issues
  • Attention & focus
  • Autism: generally independent
  • Bipolar Disorder
  • Bullying or harassment
  • Career & relationships (mid-life)
  • Career & work issues
  • Conditions caused by stress
  • Detachment/disconnection
  • Dissociative disorders
  • Empty nesters
  • End-of-life challenges
  • Ethnic identity
  • First responder stress
  • Focus, concentration & memory
  • Gender identity
  • Grief & loss
  • Intellectual challenges: generally independent
  • Intense mood changes
  • LGBTQ+
  • Men's health/issues
  • Menopause & perimenopause
  • Military & veteran
  • Obsessive Compulsive Disorder
  • Other women's health concerns
  • Parenthood
  • Phobias
  • PMS & PMDD
  • Racial identity
  • Retirement
  • Sexual trauma
  • Trauma & PTSD
  • Unhealthy eating habits

Languages

  • English

Education

  • Molloy College

FAQs

Please call us at 631-323-6872 to schedule an appointment with Catherine Costa Gardyn.

New patient?

Call for Availability

Already have an appointment?

Video visit waiting room Join Now
Existing patient portal Sign in

See what our patients are saying about Catherine Costa Gardyn

One of a kind bedside manner. She genuinely treats you like a human being and never forces anything on you like some docs will. She takes the time to get to know you and genuinely treats you like a family member or a friend. You can tell she really cares. Thank you.
Read Full Review
Peter F.

Peter F.

Feb 11, 2026
Google Google
I just had my first visit with Catherine. She was very kind and thorough. She made me feel comfortable to speak with her about my personal issues. Her plan for me made a lot of sense. I look forward to working with her.
Read Full Review
Sheila D.

Sheila D.

Aug 12, 2025
Google Google
She always referred to me as my friend. She was very helpful knowledgeable and answered and asked questions. She gave amazing feedback and I felt heard as to what my issues were. I will e returning and highly recommend
Read Full Review
Anna A.

Anna A.

Jun 05, 2024
Google Google
Excellent practitioner. She cares about my whole self and how I can improve all parts of my life—not just what the pills can do for me. She has been very important in my healing journey.
Read Full Review
Marissa P.

Marissa P.

May 15, 2026
Google Google
Was there this morning and Catherine was very nice will have another appointment in 2 weeks to follow up via telehealth
Read Full Review
Maryann G.

Maryann G.

Oct 14, 2025
Google Google
She gets me and makes me feel understood and not alone
Read Full Review
Lindsay J.

Lindsay J.

Oct 15, 2024
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

Filter Provider Results