MR. MARK J. WEISS MHA, LBSW
NPI 1821239039
Social Worker in Auburn Hills, MI

NPI Status: Active since March 18, 2009

Contact Information

1270 DORIS RD
AUBURN HILLS, MI
ZIP 48326
Phone: (248) 276-8110

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NPPES record last updated: March 18, 2009. Verified against the NPPES registry weekly; last sync: July 12, 2026.

  • Individual
  • Male
  • Social Worker

About MARK WEISS

This page provides the complete NPI Profile along with additional information for Mark Weiss, a provider established in Auburn Hills, Michigan with a medical specialization in Social Worker. The healthcare provider is registered in the NPI registry with number 1821239039 assigned on March 2009. The practitioner's primary taxonomy code is 104100000X with license number 6802020993 (MI). The provider is registered as an individual and his NPI record was last updated 17 years ago.

NPI
1821239039
Provider Name
MR. MARK J. WEISS MHA, LBSW
Gender
Male
Entity Type
Individual
Location Address
1270 DORIS RD AUBURN HILLS, MI 48326
Location Phone
(248) 276-8110
Mailing Address
1270 DORIS RD. AUBURN HILLS, MI 48326
Mailing Phone
(248) 276-8110
Is Sole Proprietor?
No
Enumeration Date
03-18-2009
Last Update Date
03-18-2009
Code Navigator

A social worker like Mark Weiss 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.

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

Social Worker

Taxonomy Code
104100000X
Type
Behavioral Health & Social Service Providers
License No.
6802020993
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 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 1821239039, 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 61. The final step is to find the difference between that total and the next multiple of ten (70 - 61 = 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
8
Unchanged
Pos 3
2
Doubled → 4
Pos 4
1
Unchanged
Pos 5
2
Doubled → 4
Pos 6
3
Unchanged
Pos 7
9
Doubled → 18 → 1 + 8
Pos 8
0
Unchanged
Pos 9
3
Doubled → 6
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 2 → 4 2 → 4 9 → 18 → 9 3 → 6

Step 2: Add all digits plus the NPI constant

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

2 + 8 + 4 + 1 + 4 + 3 + 1 + 8 + 0 + 6 + 24 = 61

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

The next multiple of ten after 61 is 70. The difference is the calculated check digit.

70 - 61 = 9
This NPI is valid
The calculated check digit is 9, which matches the last digit of 1821239039.

Other Providers at the Same Location


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

Speech-Language Pathologist
1270 DORIS RD
AUBURN HILLS, MI 48326
Registered Nurse (Psychiatric/Mental Health)
1270 DORIS RD
AUBURN HILLS, MI 48326
Registered Nurse (Psychiatric/Mental Health)
1270 DORIS RD
AUBURN HILLS, MI 48326
Registered Nurse (Psychiatric/Mental Health)
1270 DORIS RD
AUBURN HILLS, MI 48326
Registered Nurse (Psychiatric/Mental Health)
1270 DORIS RD
AUBURN HILLS, MI 48326
Registered Nurse (Psychiatric/Mental Health)
1270 DORIS RD
AUBURN HILLS, MI 48326
Registered Nurse (Psychiatric/Mental Health)
1270 DORIS RD
AUBURN HILLS, MI 48326
Dietitian, Registered
1270 DORIS RD
AUBURN HILLS, MI 48326
Social Worker (Clinical)
1270 DORIS RD
AUBURN HILLS, MI 48326
Social Worker (Clinical)
1270 DORIS RD
AUBURN HILLS, MI 48326
Social Worker (Clinical)
1270 DORIS RD
AUBURN HILLS, MI 48326
Social Worker (Clinical)
1270 DORIS RD
AUBURN HILLS, MI 48326
Social Worker (Clinical)
1270 DORIS RD
AUBURN HILLS, MI 48326
Social Worker (Clinical)
1270 DORIS RD
AUBURN HILLS, MI 48326
Social Worker (Clinical)
1270 DORIS RD
AUBURN HILLS, MI 48326
Social Worker
1270 DORIS RD
AUBURN HILLS, MI 48326
Social Worker (Clinical)
1270 DORIS RD, MACOMB OAKLAND REGIONAL CTR
AUBURN HILLS, MI 48326
Social Worker (Clinical)
1270 DORIS RD
AUBURN HILLS, MI 48326
Psychologist (Clinical)
1270 DORIS RD
AUBURN HILLS, MI 48326
Social Worker
1270 DORIS RD
AUBURN HILLS, MI 48326

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1821239039, enumerated as an "individual" on March 18, 2009.

The provider is located at 1270 DORIS RD AUBURN HILLS, MI 48326 and the phone number is (248) 276-8110.

Social Worker with taxonomy code 104100000X.