MONTREAVOUS GRAY
NPI 1841154804
Contractor - Vehicle Modifications in Madison, WI
NPI Status: Active since December 15, 2025
Contact Information
811 E WASHINGTON AVE STE 400
MADISON, WI
ZIP 53703
Phone: (608) 344-9494
- Individual
- Male
- Contractor
- Vehicle Modifications
About MONTREAVOUS GRAY
This page provides the complete NPI Profile along with additional information for Montreavous Gray, a provider established in Madison, Wisconsin with a medical specialization in Contractor, focusing in vehicle modifications . The healthcare provider is registered in the NPI registry with number 1841154804 assigned on December 2025. The practitioner's primary taxonomy code is 171WV0202X. The provider is registered as an individual and his NPI record was last updated one year ago.
- NPI
- 1841154804
- Provider Name
- MONTREAVOUS GRAY
- Gender
- Male
- Entity Type
- Individual
- Location Address
- 811 E WASHINGTON AVE STE 400 MADISON, WI 53703
- Location Phone
- (608) 344-9494
- Mailing Address
- 3819 N 9TH ST MILWAUKEE, WI 53206
- Mailing Phone
- (608) 344-9494
- Is Sole Proprietor?
- No
- Enumeration Date
- 12-15-2025
- Last Update Date
- 12-15-2025
- Code Navigator
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
Contractor Vehicle Modifications
- Taxonomy Code
- 171WV0202X
- Type
- Other Service Providers
- License State
- WI
- Taxonomy Description
- A contractor who makes modifications to private vehicles to accommodate a health condition.
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) |
|---|---|---|---|---|
| 1 | 343900000X | Transportation Services | Non-emergency Medical Transport (VAN) | (WI) |
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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 1841154804, we treat the final digit (4) 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 66. The final step is to find the difference between that total and the next multiple of ten (70 - 66 = 4).
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.
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.
Step 2: Add all digits plus the NPI constant
Add the transformed values, the unchanged digits, and the constant 24.
Step 3: Find the amount needed to reach the next multiple of 10
The next multiple of ten after 66 is 70. The difference is the calculated check digit.
Other Providers at the Same Location
The following 9 providers are registered at the same or a nearby location.
MADISON, WI 53703
MADISON, WI 53703
MADISON, WI 53703
MADISON, WI 53703
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1841154804, enumerated as an "individual" on December 15, 2025.
The provider is located at 811 E WASHINGTON AVE STE 400 MADISON, WI 53703 and the phone number is (608) 344-9494.
Contractor with taxonomy code 171WV0202X and a focus in Vehicle Modifications.
