Jennifer McMahan, MS, PMHNP-BC, Psychiatry in Washington, Missouri

Specialties:

Anxiety Bipolar Disorder Depression/feeling down Intense mood changes Panic attacks Self-esteem Stress management +23

Ages Served

18-74

Manages Medications

Yes

Accepts Insurance

Yes - View accepted plans

About Jennifer McMahan

Jennifer, McMahan, MSN, PMHNP-BC received her masters degree in Nursing from Walden University in 2020 and her Bachelor of Science in Nursing in 2017 from Excelsior College. Jennifer works with adults with a wide range of disorders and symptoms including anxiety, depression, anger, grief/loss, bipolar, trauma, and schizophrenia spectrum disorders. She uses a holistic and integrative approach to therapy which includes different techniques based on each clients unique personality and needs.

Types of Care & Ages Served

Psychiatry/Medication Management: Ages 18-74

Areas of Focus

Psychiatry/Medication Management

Treat and prevent mental health disorders using medication and therapy.

Anxiety
Bipolar Disorder
Depression/feeling down
Intense mood changes
Panic attacks
Self-esteem
Stress management
Anger issues
Detachment/disconnection
Dissociative disorders
First responder stress
General relationship issues
Grief & loss
Hair pulling & skin picking
Hallucinations
Marital stress or divorce
Military & veteran
Obsessive Compulsive Disorder
Patterns affecting behavior, emotions and relationships
Personality disorders
Phobias
Premarital counseling
Psychosis/issues with reality
Schizophrenia/schizoaffective
Self-injury or cutting
Sexual trauma
Sleep issues or insomnia
Stress from ongoing health issues
Trauma & PTSD
Unusual thoughts or beliefs

Insurances Accepted

Languages

English

Education

Walden University

Locations

LifeStance Health
851 East 5th St
Suite 308
Washington, MO 63090

Get Directions Phone Number

636-432-5500

636-939-2551

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Frequently Asked
Questions About
Jennifer McMahan

Please call us at 636-432-5500 to schedule an appointment with Jennifer McMahan.

See what our patients are saying about Jennifer McMahan

I was with Jennifer McMahan for almost a year I left Life Stance to an another company which was a mistake l l returned to LifeStance and I given a new doctor after several visits with this woman, my new doctor I was not impressed. She didn’t have very good knowledge of medication. I stay with her for a while, but realized I was getting nowhere so I reached out to Jennifer McMahon asking her if she could take me back which she did I couldn’t be more happier with Jennifer McMahon, she’s great. She has a lot of knowledge and has a lot more experience. She’s very understanding and is willing to work with you. I feel now I have made a perfect match and I should’ve requested her when I returned to life since awesome person. Great knowledge knows what she’s doing now I can sleep well knowing I have a great doctor .

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Lori M.

Mar 27, 2025

Google

I have seen some reviews that were not positive and just wanted to offer a review from a happy patient. I have been using Jennifer for about three years and have been happy with her treatment. As I have needed to change up things she listens to why and comes up with alternatives explaining the pro/con of each decision. While all reviews are important I think more unhappy people write reviews than happy people.

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NSA S.

Dec 06, 2024

Google

Jennifer saw my husband and was so helpful, nice, professional and caring. Medication was prescribed and everything was talked about and explained. I would highly recommend her for your medical needs. ⭐️⭐️⭐️⭐️⭐️

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Debra M.

Feb 10, 2026

Google

Jennifer McMahan is the most genuine and kind NP ever! I have been seeing her for years and couldn’t imagine going through life without her. If you are looking for a BH provider then she is the one. She’s honest and trustworthy.

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Nanette T.

Aug 06, 2026

Google

Jennifer McMahan has really helped me to begin working things out. I have grown to begin trying to trust her and her suggestions for my mental health. My condition is not so hard to maneuver since seeing her. Really appreciate her.

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M L H.

Apr 21, 2026

Google

Jennifer has been excellent at my appointments and my medication is always at my pharmacy when I need it! I appreciate the ease of scheduling my appointments and in connecting with Jennifer whenever I need to speak with her!

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