MRS. MARSHA LYNN FOSTER LLMSW
NPI 1861340382
Social Worker in Walled Lake, MI

NPI Status: Active since March 19, 2026

Contact Information

1010 E WEST MAPLE RD STE 200
WALLED LAKE, MI
ZIP 48390
Phone: (248) 744-6541

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  • Individual
  • Female
  • Social Worker

About MARSHA FOSTER

This page provides the complete NPI Profile along with additional information for Marsha Foster, a provider established in Walled Lake, Michigan with a medical specialization in Social Worker. The healthcare provider is registered in the NPI registry with number 1861340382 assigned on March 2026. The practitioner's primary taxonomy code is 104100000X with license number 6851121558 (MI). The provider is registered as an individual and her NPI record was last updated March 2026.

NPI
1861340382
Provider Name
MRS. MARSHA LYNN FOSTER LLMSW
Gender
Female
Entity Type
Individual
Location Address
1010 E WEST MAPLE RD STE 200 WALLED LAKE, MI 48390
Location Phone
(248) 744-6541
Mailing Address
3609 SUFFOLK CT FLUSHING, MI 48433
Mailing Phone
(313) 586-0424
Is Sole Proprietor?
No
Enumeration Date
03-19-2026
Last Update Date
03-23-2026
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A social worker like Marsha Foster helps patients solve and cope with problems in their everyday lives, diagnoses and treats mental, behavioral, and emotional problems. Social workers help in wide range of situations, such as adopting a child, illness, divorce, or unemployment.

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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

Taxonomy Code
104100000X
Type
Behavioral Health & Social Service Providers
License No.
6851121558
License State
MI
Taxonomy Description
A social worker is a person who is qualified by a Social Work degree, and licensed, certified or registered by the state as a social worker to practice within the scope of that license. A social worker provides assistance and counseling to clients and their families who are dealing with social, emotional and environmental problems. Social work services may be rendered to individuals, families, groups, and the public.

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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 1861340382, we treat the final digit (2) 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 58. The final step is to find the difference between that total and the next multiple of ten (60 - 58 = 2).

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
8
Unchanged
Pos 3
6
Doubled → 12 → 1 + 2
Pos 4
1
Unchanged
Pos 5
3
Doubled → 6
Pos 6
4
Unchanged
Pos 7
0
Doubled → 0
Pos 8
3
Unchanged
Pos 9
8
Doubled → 16 → 1 + 6
Check
2
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 6 → 12 → 3 3 → 6 0 → 0 8 → 16 → 7

Step 2: Add all digits plus the NPI constant

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

2 + 8 + 1 + 2 + 1 + 6 + 4 + 0 + 3 + 1 + 6 + 24 = 58

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

The next multiple of ten after 58 is 60. The difference is the calculated check digit.

60 - 58 = 2
This NPI is valid
The calculated check digit is 2, which matches the last digit of 1861340382.

Other Providers at the Same Location


The following 4 providers are registered at the same or a nearby location.

Case Manager/Care Coordinator
1010 E WEST MAPLE RD STE 200
WALLED LAKE, MI 48390
Clinic/Center (Methadone)
1010 E WEST MAPLE RD STE 200
WALLED LAKE, MI 48390
Counselor (Addiction (Substance Use Disorder))
1010 E WEST MAPLE RD STE 200
WALLED LAKE, MI 48390
Counselor (Addiction (Substance Use Disorder))
1010 E WEST MAPLE RD STE 200
WALLED LAKE, MI 48390

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1861340382, enumerated as an "individual" on March 19, 2026.

The provider is located at 1010 E WEST MAPLE RD STE 200 WALLED LAKE, MI 48390 and the phone number is (248) 744-6541.

Social Worker with taxonomy code 104100000X.