MS. SARAH-MARIE GABRIELLE THOMAS
NPI 1508704446
Counselor - Mental Health in Boston, MA

NPI Status: Active since March 23, 2026

Contact Information

780 AMERICAN LEGION HWY
BOSTON, MA
ZIP 02131
Phone: (617) 469-8500

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  • Individual
  • Female
  • Counselor
  • Mental Health

About SARAH-MARIE THOMAS

This page provides the complete NPI Profile along with additional information for Sarah-marie Thomas, a provider established in Boston, Massachusetts with a medical specialization in Counselor, focusing in mental health . The healthcare provider is registered in the NPI registry with number 1508704446 assigned on March 2026. The practitioner's primary taxonomy code is 101YM0800X. The provider is registered as an individual and her NPI record was last updated March 2026.

NPI
1508704446
Provider Name
MS. SARAH-MARIE GABRIELLE THOMAS
Gender
Female
Entity Type
Individual
Location Address
780 AMERICAN LEGION HWY BOSTON, MA 02131
Location Phone
(617) 469-8500
Mailing Address
780 AMERICAN LEGION HWY BOSTON, MA 02131
Mailing Phone
(617) 469-8500
Is Sole Proprietor?
No
Enumeration Date
03-23-2026
Last Update Date
03-23-2026
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A mental health counselor like Sarah-marie Thomas 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.

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

Counselor Mental Health

Taxonomy Code
101YM0800X
Type
Behavioral Health & Social Service Providers
License State
MA

Secondary Taxonomies

The provider has reported to the NPI enumerator additional taxonomy codes. Multiple taxonomy codes may represent subspecialties or other areas of specialization the provider maybe licensed to practice.

No. Taxonomy Code Type Classification /
Specialization
License No. (State)
1101YS0200XBehavioral Health & Social Service Providers

Counselor
School

(MA)

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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 1508704446, we treat the final digit (6) 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 64. The final step is to find the difference between that total and the next multiple of ten (70 - 64 = 6).

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
5
Unchanged
Pos 3
0
Doubled → 0
Pos 4
8
Unchanged
Pos 5
7
Doubled → 14 → 1 + 4
Pos 6
0
Unchanged
Pos 7
4
Doubled → 8
Pos 8
4
Unchanged
Pos 9
4
Doubled → 8
Check
6
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 0 → 0 7 → 14 → 5 4 → 8 4 → 8

Step 2: Add all digits plus the NPI constant

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

2 + 5 + 0 + 8 + 1 + 4 + 0 + 8 + 4 + 8 + 24 = 64

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

The next multiple of ten after 64 is 70. The difference is the calculated check digit.

70 - 64 = 6
This NPI is valid
The calculated check digit is 6, which matches the last digit of 1508704446.

Other Providers at the Same Location


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

Psychologist
780 AMERICAN LEGION HWY
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Psychologist
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ROSLINDALE, MA 02131
Counselor (Mental Health)
780 AMERICAN LEGION HWY
ROSLINDALE, MA 02131
Psychologist (Clinical)
780 AMERICAN LEGION HWY
ROSLINDALE, MA 02131
Social Worker (Clinical)
780 AMERICAN LEGION HWY
ROSLINDALE, MA 02131
Social Worker (Clinical)
780 AMERICAN LEGION HWY
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Counselor (Mental Health)
780 AMERICAN LEGION HWY
ROSLINDALE, MA 02131
Counselor (Mental Health)
780 AMERICAN LEGION HWY
ROSLINDALE, MA 02131
Social Worker (Clinical)
780 AMERICAN LEGION HWY, THE HOME FOR LITTLE WANDERERS
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Student in an Organized Health Care Education/Training Program
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Student in an Organized Health Care Education/Training Program
780 AMERICAN LEGION HWY
ROSLINDALE, MA 02131
Social Worker (Clinical)
780 AMERICAN LEGION HWY
ROSLINDALE, MA 02131
Social Worker (Clinical)
780 AMERICAN LEGION HWY
ROSLINDALE, MA 02131
Social Worker (Clinical)
780 AMERICAN LEGION HWY
ROSLINDALE, MA 02131
Social Worker (Clinical)
780 AMERICAN LEGION HWY, TASP
ROSLINDALE, MA 02131
Psychologist
780 AMERICAN LEGION HWY
ROSLINDALE, MA 02131
Social Worker (Clinical)
780 AMERICAN LEGION HWY
ROSLINDALE, MA 02131
Counselor (Mental Health)
780 AMERICAN LEGION HWY
ROSLINDALE, MA 02131
Social Worker (Clinical)
780 AMERICAN LEGION HWY
ROSLINDALE, MA 02131
Social Worker (Clinical)
780 AMERICAN LEGION HWY
ROSLINDALE, MA 02131

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1508704446, enumerated as an "individual" on March 23, 2026.

The provider is located at 780 AMERICAN LEGION HWY BOSTON, MA 02131 and the phone number is (617) 469-8500.

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