DENNIS GATES, MENTAL HEALTH LLC
NPI 1134656747
Psychologist - Prescribing (Medical) in Largo, MD
NPI Status: Active since May 12, 2017
Contact Information
1300 MERCANTILE LN STE 198
LARGO, MD
ZIP 20774
Phone: (301) 955-9812
Fax: (301) 955-9813
- Organization
- Psychologist
- Prescribing (Medical)
About DENNIS GATES, MENTAL HEALTH LLC
This page provides the complete NPI Profile along with additional information for Dennis Gates, Mental Health Llc, a provider established in Largo, Maryland operating as a Psychologist, focusing in prescribing (medical) . The healthcare provider is registered in the NPI registry with number 1134656747 assigned on May 2017. The practitioner's primary taxonomy code is 103TP0016X with license number R207808 (MD). The provider is registered as an organization and their NPI record was last updated one year ago. The organization operates as a Single Specialty Group with one or more individual practitioners, all of who practice with the same area of specialization. The authorized official of this NPI record is Mr. Tom Dennis Gates Ii Fpmhnp-bc (Psychiatric Nurse Practitioner)
- NPI
- 1134656747
- Provider Name
- DENNIS GATES, MENTAL HEALTH LLC
- Entity Type
- Organization
- Location Address
- 1300 MERCANTILE LN STE 198 LARGO, MD 20774
- Location Phone
- (301) 955-9812
- Location Fax
- (301) 955-9813
- Mailing Address
- 1300 MERCANTILE LN STE 198 LARGO, MD 20774
- Mailing Phone
- (301) 955-9812
- Mailing Fax
- (301) 955-9813
- Is Sole Proprietor?
- No
- Is Organization Subpart?
- No
- Enumeration Date
- 05-12-2017
- Last Update Date
- 10-27-2025
- Code Navigator
Location Map
Specialty - Primary Taxonomy
The NPI enumerator requires providers to submit at least one taxonomy code. A taxonomy code is a unique 10-character code that describes the healthcare provider type, classification, and the area of specialization. There could be only one primary taxonomy code per NPI record. For individual NPIs the license data is associated to the taxonomy code.
- Classification
Psychologist Prescribing (Medical)
- Taxonomy Code
- 103TP0016X
- Type
- Behavioral Health & Social Service Providers
- License No.
- R207808
- License State
- MD
- Taxonomy Description
- A licensed, doctoral-level psychologist authorized to prescribe and has undergone specialized education and training in preparation for prescriptive practice and has passed an examination accepted by the state board of psychology relevant to establishing competence for prescribing, and has received from the state board of psychology a current certificate granting prescriptive authority, which has not been revoked or suspended.
Group Taxonomy 193400000X SINGLE SPECIALTY GROUP
This provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.
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NPI NPI Number Validation
How NPI Validation Works
The NPI validation process uses the ISO-standard Luhn algorithm, a mathematical "handshake", to ensure that a provider's 10-digit ID is authentic and free of common typing errors.
To verify the NPI 1134656747, we treat the final digit (7) as the Check Digit—the target answer we need to reach. The process begins by taking the first nine digits and adding a constant value of 24, which accounts for the "80840" prefix required for all U.S. health identifiers. We then double every other digit starting from the right and sum the individual digits of those results together. For this specific NPI, that total comes to 63. The final step is to find the difference between that total and the next multiple of ten (70 - 63 = 7).
Digit-by-digit view
Use the first nine digits for the calculation. Starting from the right, double every other digit. The last digit is the check digit and is not part of the calculation.
Step 1: Double every other digit from the right
Starting with the rightmost digit of the first nine digits, double every other value. If doubling creates a two-digit number, add those digits together.
Step 2: Add all digits plus the NPI constant
Add the transformed values, the unchanged digits, and the constant 24.
Step 3: Find the amount needed to reach the next multiple of 10
The next multiple of ten after 63 is 70. The difference is the calculated check digit.
Other Providers at the Same Location
The following 8 providers are registered at the same or a nearby location.
UPPER MARLBORO, MD 20774
LARGO, MD 20774
LARGO, MD 20774
LARGO, MD 20774
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1134656747, enumerated as an "organization" on May 12, 2017.
The provider is located at 1300 MERCANTILE LN STE 198 LARGO, MD 20774 and the phone number is (301) 955-9812.
Psychologist with taxonomy code 103TP0016X and a focus in Prescribing (Medical).
