ALEXANDRA LEWIS LMHC
NPI 1255124459
Counselor - Mental Health in Hingham, MA

NPI Status: Active since May 28, 2025

Contact Information

175 DERBY ST
HINGHAM, MA
ZIP 02043
Phone: (781) 424-8119

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  • Individual
  • Female
  • Counselor
  • Mental Health

About ALEXANDRA LEWIS

This page provides the complete NPI Profile along with additional information for Alexandra Lewis, a provider established in Hingham, Massachusetts with a medical specialization in Counselor, focusing in mental health . The healthcare provider is registered in the NPI registry with number 1255124459 assigned on May 2025. The practitioner's primary taxonomy code is 101YM0800X. The provider is registered as an individual and her NPI record was last updated one year ago.

NPI
1255124459
Provider Name
ALEXANDRA LEWIS LMHC
Gender
Female
Entity Type
Individual
Location Address
175 DERBY ST HINGHAM, MA 02043
Location Phone
(781) 424-8119
Mailing Address
129 G ST APT 3 SOUTH BOSTON, MA 02127
Mailing Phone
(802) 999-7069
Is Sole Proprietor?
No
Enumeration Date
05-28-2025
Last Update Date
05-28-2025
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A mental health counselor like Alexandra Lewis 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
License State
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 1255124459, we treat the final digit (9) 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 51. The final step is to find the difference between that total and the next multiple of ten (60 - 51 = 9).

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
2
Unchanged
Pos 3
5
Doubled → 10 → 1 + 0
Pos 4
5
Unchanged
Pos 5
1
Doubled → 2
Pos 6
2
Unchanged
Pos 7
4
Doubled → 8
Pos 8
4
Unchanged
Pos 9
5
Doubled → 10 → 1 + 0
Check
9
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 5 → 10 → 1 1 → 2 4 → 8 5 → 10 → 1

Step 2: Add all digits plus the NPI constant

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

2 + 2 + 1 + 0 + 5 + 2 + 2 + 8 + 4 + 1 + 0 + 24 = 51

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

The next multiple of ten after 51 is 60. The difference is the calculated check digit.

60 - 51 = 9
This NPI is valid
The calculated check digit is 9, which matches the last digit of 1255124459.

Other Providers at the Same Location


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

Dentist (Periodontics)
175 DERBY ST, SUITE #11
HINGHAM, MA 02043
Psychologist (Clinical)
175 DERBY ST
HINGHAM, MA 02043
Psychologist (Clinical)
175 DERBY ST, SUITE 10
HINGHAM, MA 02043
Psychologist (Clinical)
175 DERBY ST, SUITE 2
HINGHAM, MA 02043
Clinical Nurse Specialist (Psychiatric/Mental Health)
175 DERBY ST, UNIT 2
HINGHAM, MA 02043
Psychologist (Clinical Child & Adolescent)
175 DERBY ST, SUITE 16
HINGHAM, MA 02043
Social Worker (Clinical)
175 DERBY ST, SUITE 2
HINGHAM, MA 02043
Ophthalmology
175 DERBY ST, SUITE 38A
HINGHAM, MA 02043
Social Worker (Clinical)
175 DERBY ST, UNIT 2
HINGHAM, MA 02043
Psychologist (Clinical)
175 DERBY ST, SUITE 10
HINGHAM, MA 02043
Counselor (Professional)
175 DERBY ST, SUITE 10
HINGHAM, MA 02043
Social Worker (Clinical)
175 DERBY ST, SUITE 2
HINGHAM, MA 02043
Social Worker (Clinical)
175 DERBY ST
HINGHAM, MA 02043
Dentist
175 DERBY ST, UNIT 34
HINGHAM, MA 02043
Ophthalmology
175 DERBY ST, SUITE 38
HINGHAM, MA 02043
Social Worker (Clinical)
175 DERBY ST, STE. 16
HINGHAM, MA 02043
Psychologist (Clinical)
175 DERBY ST, STE 21-22
HINGHAM, MA 02043
Nurse Practitioner (Psychiatric/Mental Health)
175 DERBY ST, SUITE 21
HINGHAM, MA 02043
Counselor (Mental Health)
175 DERBY ST, STE 2
HINGHAM, MA 02043
Psychiatry & Neurology (Psychiatry)
175 DERBY ST, SUITE 21-22
HINGHAM, MA 02043

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1255124459, enumerated as an "individual" on May 28, 2025.

The provider is located at 175 DERBY ST HINGHAM, MA 02043 and the phone number is (781) 424-8119.

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