MADDISON MAHAR LMSW
NPI 1003797945
Social Worker - Clinical in Lansing, MI

NPI Status: Active since September 09, 2025

Contact Information

812 E JOLLY RD STE 210
LANSING, MI
ZIP 48910
Phone: (517) 346-8200
Fax: (517) 346-8291

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  • Individual
  • Female
  • Social Worker
  • Clinical

About MADDISON MAHAR

This page provides the complete NPI Profile along with additional information for Maddison Mahar, a provider established in Lansing, Michigan with a medical specialization in Social Worker, focusing in clinical . The healthcare provider is registered in the NPI registry with number 1003797945 assigned on September 2025. The practitioner's primary taxonomy code is 1041C0700X. The provider is registered as an individual and her NPI record was last updated one year ago.

NPI
1003797945
Provider Name
MADDISON MAHAR LMSW
Gender
Female
Entity Type
Individual
Location Address
812 E JOLLY RD STE 210 LANSING, MI 48910
Location Phone
(517) 346-8200
Location Fax
(517) 346-8291
Mailing Address
5550 MALL DR W APT 2122 LANSING, MI 48917
Mailing Phone
(517) 346-8200
Mailing Fax
(517) 346-8291
Is Sole Proprietor?
Yes
Enumeration Date
09-09-2025
Last Update Date
09-09-2025
Code Navigator

A clinical social worker like Maddison Mahar is licensed to diagnose and treat mental, behavioral, and emotional disorders. A clinical social worker helps patients develop strategies to change behavior or cope with difficult situations and refer patients to other resources or services, such as support groups or other mental health professionals.

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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

Social Worker Clinical

Taxonomy Code
1041C0700X
Type
Behavioral Health & Social Service Providers
Taxonomy Description
A social worker who holds a master's or doctoral degree in social work from an accredited school of social work in addition to at least two years of post-master's supervised experience in a clinical setting. The social worker must be licensed, certified, or registered at the clinical level in the jurisdiction of practice. A clinical social worker provides direct services, including interventions focused on interpersonal interactions, intrapsychic dynamics, and life management issues. Clinical social work services are based on bio-psychosocial perspectives. Services consist of assessment, diagnosis, treatment (including psychotherapy and counseling), client-centered advocacy, consultation, evaluation, and prevention of mental illness, emotional, or behavioral disturbances.

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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 1003797945, we treat the final digit (5) 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 65. The final step is to find the difference between that total and the next multiple of ten (70 - 65 = 5).

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

Step 2: Add all digits plus the NPI constant

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

2 + 0 + 0 + 3 + 1 + 4 + 9 + 1 + 4 + 9 + 8 + 24 = 65

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

The next multiple of ten after 65 is 70. The difference is the calculated check digit.

70 - 65 = 5
This NPI is valid
The calculated check digit is 5, which matches the last digit of 1003797945.

Other Providers at the Same Location


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

Social Worker (Clinical)
812 E JOLLY RD STE 210
LANSING, MI 48910
Social Worker
812 E JOLLY RD STE 210
LANSING, MI 48910
Social Worker (Clinical)
812 E JOLLY RD STE 210
LANSING, MI 48910
Social Worker (Clinical)
812 E JOLLY RD STE 210
LANSING, MI 48910
Social Worker
812 E JOLLY RD STE 210
LANSING, MI 48910
Registered Nurse
812 E JOLLY RD STE 210
LANSING, MI 48910
Social Worker (Clinical)
812 E JOLLY RD STE 210
LANSING, MI 48910
Registered Nurse
812 E JOLLY RD STE 210
LANSING, MI 48910
Registered Nurse
812 E JOLLY RD STE 210
LANSING, MI 48910
Social Worker (Clinical)
812 E JOLLY RD STE 210
LANSING, MI 48910
Registered Nurse
812 E JOLLY RD STE 210
LANSING, MI 48910
Registered Nurse
812 E JOLLY RD STE 210
LANSING, MI 48910
Licensed Practical Nurse
812 E JOLLY RD STE 210
LANSING, MI 48910
Social Worker
812 E JOLLY RD STE 210
LANSING, MI 48910
Registered Nurse
812 E JOLLY RD STE 210
LANSING, MI 48910
Registered Nurse
812 E JOLLY RD STE 210
LANSING, MI 48910
Social Worker (Clinical)
812 E JOLLY RD STE 210
LANSING, MI 48910
Social Worker (Clinical)
812 E JOLLY RD STE 210
LANSING, MI 48910
Social Worker (Clinical)
812 E JOLLY RD STE 210
LANSING, MI 48910
Case Manager/Care Coordinator
812 E JOLLY RD STE 210
LANSING, MI 48910

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1003797945, enumerated as an "individual" on September 09, 2025.

The provider is located at 812 E JOLLY RD STE 210 LANSING, MI 48910 and the phone number is (517) 346-8200.

Social Worker with taxonomy code 1041C0700X and a focus in Clinical.