Dennis Gates, NP

Psychiatry nurse practitioner, Largo, MD

Dennis Gates is a psychiatry nurse practitioner at GMH Psychiatry LLC, offering telepsychiatry and medication management.

9500 Medical Center Dr, Ste 432, Largo, MD 20774

At a glance

Telehealth

Telepsychiatry by Zoom

New patient visit (1 hour)

$375

Payment

Posted fees, most medical insurances accepted

Facts on this page last checked October 2026. How we check doctors

About Dennis Gates

Gates's experience is in general psychiatry, including anxiety, depression and bipolar disorder. The practice provides full psychiatric evaluations, with a thorough psycho-social assessment used to assess for medication management. The practice also provides medication management for anxiety, depression, bipolar disorder and ADHD.

The practice provides certificates for medical cannabis in Maryland and the District of Columbia. The practice serves the LGBTQIA community, working professionals, children and the Medicaid community. Appointments are offered by telepsychiatry on Zoom, from home or another convenient place.

The practice is now GMH Psychiatry LLC and was formerly Dennis Gates Mental Health LLC.

Membership and fees

Fees are posted and payment is due at the time of service.

A 1-hour new patient evaluation is $375, a 20-minute follow-up is $125 and a 40-minute follow-up is $225.

A telephone consultation for established patients is $125 for 20 minutes or $150 for 30 minutes, and the cannabis program is $250 and is not covered by insurance.

Fees vary by plan. Ask the practice.

Services

General psychiatry Psychiatric evaluations Medication management Medical cannabis certificates Anxiety Depression Bipolar disorder ADHD LGBTQIA community Working professionals Children Medicaid community

What psychiatry doctors commonly treat

Licenses and credentials

License

Verify on Nursys

Hospital and practice affiliations

GMH Psychiatry LLC (formerly Dennis Gates Mental Health LLC)

Location

9500 Medical Center Dr, Ste 432, Largo, MD 20774

GMH Psychiatry LLC practice page

Directions

Patient reviews

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Questions patients ask

Does Gates take insurance, or only self-pay?

Fees are posted and payment is due at the time of service. The provider accepts most medical insurances.

How much does Gates charge?

A 1-hour new patient evaluation is $375. A 20-minute follow-up is $125 and a 40-minute follow-up is $225.

Does Gates offer telehealth?

The practice offers telepsychiatry appointments by Zoom, from home or another convenient place.

Does the practice provide medical cannabis certificates?

The practice provides certificates for medical cannabis in Maryland and the District of Columbia. The cannabis program costs $250 and is not covered by insurance.