GENNARO CONTRACING LLC
NPI 1558161794
Contractor - Home Modifications in Shelton, WA
NPI Status: Active since March 17, 2025
Contact Information
300 E DANA DR
SHELTON, WA
ZIP 98584
Phone: (360) 229-1800
NPPES record last updated: March 17, 2025. Verified against the NPPES registry weekly; last sync: July 12, 2026.
- Organization
- Contractor
- Home Modifications
About GENNARO CONTRACING LLC
This page provides the complete NPI Profile along with additional information for Gennaro Contracing Llc, a provider established in Shelton, Washington operating as a Contractor, focusing in home modifications . The healthcare provider is registered in the NPI registry with number 1558161794 assigned on March 2025. The practitioner's primary taxonomy code is 171WH0202X. The provider is registered as an organization and their NPI record was last updated one year ago. Gennaro Contracing Llc operates as a Multi-Specialty Group with one or more individual practitioners, who practice different areas of specialization. The authorized official of this NPI record is Anthony Joseph Gennaro (Member)
- NPI
- 1558161794
- Provider Name
- GENNARO CONTRACING LLC
- Entity Type
- Organization
- Location Address
- 300 E DANA DR SHELTON, WA 98584
- Location Phone
- (360) 229-1800
- Mailing Address
- 300 E DANA DR SHELTON, WA 98584
- Mailing Phone
- (360) 229-1800
- Is Sole Proprietor?
- No
- Is Organization Subpart?
- No
- Enumeration Date
- 03-17-2025
- Last Update Date
- 03-17-2025
- 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 Home Modifications
- Taxonomy Code
- 171WH0202X
- Type
- Other Service Providers
- Taxonomy Description
- A contractor who makes modifications to homes to accommodate a health condition.
Group Taxonomy 193200000X MULTI-SPECIALTY GROUP
This provider is a business group of one or more individual practitioners, who practice with different areas of specialization.
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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 1558161794, 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.
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1558161794, enumerated as an "organization" on March 17, 2025.
The provider is located at 300 E DANA DR SHELTON, WA 98584 and the phone number is (360) 229-1800.
Contractor with taxonomy code 171WH0202X and a focus in Home Modifications.
