LESLIE SIMMS-HOLSTON
NPI 1093682510
Counselor - Mental Health in Adelphi, MD

NPI Status: Active since October 20, 2025

Contact Information

8908 RIGGS RD
ADELPHI, MD
ZIP 20783
Phone: (301) 431-5630

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  • Individual
  • Counselor
  • Mental Health

About LESLIE SIMMS-HOLSTON

This page provides the complete NPI Profile along with additional information for Leslie Simms-holston, a provider established in Adelphi, Maryland operating as a Counselor, focusing in mental health . The healthcare provider is registered in the NPI registry with number 1093682510 assigned on October 2025. The practitioner's primary taxonomy code is 101YM0800X. The provider is registered as an individual and their NPI record was last updated one year ago.

NPI
1093682510
Provider Name
LESLIE SIMMS-HOLSTON
Gender
Entity Type
Individual
Location Address
8908 RIGGS RD ADELPHI, MD 20783
Location Phone
(301) 431-5630
Mailing Address
8908 RIGGS RD ADELPHI, MD 20783
Is Sole Proprietor?
Yes
Enumeration Date
10-20-2025
Last Update Date
10-20-2025
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A mental health counselor like Leslie Simms-holston provides treatment to individuals, families, couples, and groups for mental and emotional health issues and relationship problems. Mental health counselors treat clients with a variety of conditions, including anxiety, depression, grief, low self-esteem, stress, and suicidal impulses.

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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

Counselor Mental Health

Taxonomy Code
101YM0800X
Type
Behavioral Health & Social Service Providers

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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 1093682510, we treat the final digit (0) 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 60. The final step is to find the difference between that total and the next multiple of ten (60 - 60 = 0).

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.

Pos 1
1
Doubled → 2
Pos 2
0
Unchanged
Pos 3
9
Doubled → 18 → 1 + 8
Pos 4
3
Unchanged
Pos 5
6
Doubled → 12 → 1 + 2
Pos 6
8
Unchanged
Pos 7
2
Doubled → 4
Pos 8
5
Unchanged
Pos 9
1
Doubled → 2
Check
0
Target digit
Regular digit Doubled digit Check digit

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.

1 → 2 9 → 18 → 9 6 → 12 → 3 2 → 4 1 → 2

Step 2: Add all digits plus the NPI constant

Add the transformed values, the unchanged digits, and the constant 24.

2 + 0 + 1 + 8 + 3 + 1 + 2 + 8 + 4 + 5 + 2 + 24 = 60

Step 3: Find the amount needed to reach the next multiple of 10

The next multiple of ten after 60 is 60. The difference is the calculated check digit.

60 - 60 = 0
This NPI is valid
The calculated check digit is 0, which matches the last digit of 1093682510.

Other Providers at the Same Location


The following 20 providers are registered at the same or a nearby location.

Clinic/Center
8908 RIGGS RD
ADELPHI, MD 20783
Physician Assistant (Medical)
8908 RIGGS RD
ADELPHI, MD 20783
Advanced Practice Midwife
8908 RIGGS RD
ADELPHI, MD 20783
Social Worker
8908 RIGGS RD
ADELPHI, MD 20783
Psychologist
8908 RIGGS RD
ADELPHI, MD 20783
Family Medicine
8908 RIGGS RD
ADELPHI, MD 20783
Pediatrics
8908 RIGGS RD
ADELPHI, MD 20783
Pediatrics
8908 RIGGS RD
ADELPHI, MD 20783
Nurse Practitioner (Family)
8908 RIGGS RD
ADELPHI, MD 20783
Pediatrics
8908 RIGGS RD
ADELPHI, MD 20783
Psychologist
8908 RIGGS RD
ADELPHI, MD 20783
Psychologist
8908 RIGGS RD
ADELPHI, MD 20783
Psychologist
8908 RIGGS RD
ADELPHI, MD 20783
Psychologist (School)
8908 RIGGS RD
ADELPHI, MD 20783
Psychologist
8908 RIGGS RD
ADELPHI, MD 20783
Psychologist
8908 RIGGS RD
ADELPHI, MD 20783
Psychologist
8908 RIGGS RD
ADELPHI, MD 20783
Psychologist
8908 RIGGS RD
ADELPHI, MD 20783
Psychologist
8908 RIGGS RD
ADELPHI, MD 20783
Psychologist
8908 RIGGS RD
ADELPHI, MD 20783

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1093682510, enumerated as an "individual" on October 20, 2025.

The provider is located at 8908 RIGGS RD ADELPHI, MD 20783 and the phone number is (301) 431-5630.

Counselor with taxonomy code 101YM0800X and a focus in Mental Health.