Dennis Gates, Mental Health Llc
Prescribing (Medical) - Psychology Clinic
1300 Mercantile Ln Ste 198, Largo
Maryland, 20774-5339
301-955-9812 301-955-9813
Maps & DirectionsDennis Gates, Mental Health Llc is a Prescribing (Medical) - Psychology Clinic in Largo, Maryland. It is located at 1300 Mercantile Ln Ste 198, Largo, MD and its contact number is 301-955-9812. The authorized person for Dennis Gates, Mental Health Llc is Mr. Tom Dennis Gates Ii
who is Psychiatric Nurse Practitioner of the clinic and his/her contact number is 301-955-9812. The primary license number for Dennis Gates, Mental Health Llc is R207808 (Prescribing (Medical)) in Maryland.
Dennis Gates, Mental Health Llc Clinic is a licensed psychologist who has completed specialized, post-doctoral training in psychopharmacology, passed a national proficiency examination in psychopharmacology, and is authorized by state statute to prescribe medications, in accordance with their state law and state licensing authority, for the evaluation, diagnosis, management and treatment of mental, nervous, emotional, behavioral, and related disorders.
Complete Clinic Profile:
Dennis Gates, Mental Health Llc Clinic speciality, address, contact phone number and fax are as below.
Patients can call on the below given phone number for appointments.
| Name: | Dennis Gates, Mental Health Llc |
| Specialization: | Prescribing (Medical) Psychology |
| Clinic Address: | 1300 Mercantile Ln Ste 198, Largo,
Maryland, 20774-5339 |
| Phone: | 301-955-9812 |
| Fax: | 301-955-9813 |
Authorized/Official Person Profile:
Officially authorized person to contact for any management issues or complaints for this clinic are as below. Person's position and contact details are also mentioned below.
| Name: | Mr. Tom Dennis Gates Ii |
| Position: | Psychiatric Nurse Practitioner |
| Contact Number: | 301-955-9812 |
Professional Identification Codes:
NPI number stands for National Provider Identifier which is a unique 10-digit identification number issued to health care providers in the United States by the Centers for Medicare and Medicaid Services (CMS).
NPI details for Dennis Gates, Mental Health Llc clinic are as mentioned below.
| NPI Number: | 1134656747 |
| NPI Enumeration Date: | 12 May, 2017 |
| NPI Last Update On: | 27 Oct, 2025 |
Medical Licenses:
Organizations can have one or more medical licenses for different specialities in the same state or different states. Related medical licenses for Dennis Gates, Mental Health Llc are as mentioned below.
| Specialization | License Number | State | Status | |
| Prescribing (Medical) | R207808 | Maryland | Primary | |
Business Mailing Address:
Business mailing address can be used for mailing purpose only, for visiting purpose patients need to refer above mentioned address.
| Address: | Dennis Gates, Mental Health Llc
1300 Mercantile Ln Ste 198,
Largo, Maryland |
| Zip: | 20774-5339 |
| Phone Number: | 301-955-9812 |
| Fax Number: | 301-955-9813 |
Patients can reach Dennis Gates, Mental Health Llc at
1300 Mercantile Ln Ste 198, Largo, Maryland or can
call to book an appointment on 301-955-9812.
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Data of this site is collected from Medicare & Medicaid Services (CMS) and NPPES. Last updated on 08 December, 2025.