MAINLAND GROUP LLC
NPI 1093680506
Public Health or Welfare in Dallas, TX

NPI Status: Active since October 06, 2025

Contact Information

4100 ALPHA RD STE 412
DALLAS, TX
ZIP 75244
Phone: (469) 870-5336

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  • Organization
  • Public Health or Welfare

About MAINLAND GROUP LLC

This page provides the complete NPI Profile along with additional information for Mainland Group Llc, a provider established in Dallas, Texas operating as a Public Health Or Welfare. The healthcare provider is registered in the NPI registry with number 1093680506 assigned on October 2025. The practitioner's primary taxonomy code is 251K00000X. The provider is registered as an organization and their NPI record was last updated one year ago. The authorized official of this NPI record is William Alfonso Zapata Rios (Managing Member)

NPI
1093680506
Provider Name
MAINLAND GROUP LLC
Entity Type
Organization
Location Address
4100 ALPHA RD STE 412 DALLAS, TX 75244
Location Phone
(469) 870-5336
Mailing Address
4100 ALPHA RD STE 412 DALLAS, TX 75244
Mailing Phone
(469) 870-5336
Is Sole Proprietor?
No
Is Organization Subpart?
No
Enumeration Date
10-06-2025
Last Update Date
10-06-2025
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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

Public Health or Welfare

Taxonomy Code
251K00000X
Type
Agencies

Authorized Official

The authorized official is the designated individual with the legal authority to make changes to the provider’s official NPI record. For organizations, the authorized official must be a general partner, chairman of the board, CEO, CFO or a direct owner holding at least a 5 percent stake in the medical organization.

Authorized Official Name

WILLIAM ALFONSO ZAPATA RIOS

Authorized Official Title
MANAGING MEMBER
Authorized Official Phone
(469) 870-5336

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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 1093680506, we treat the final digit (6) 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 54. The final step is to find the difference between that total and the next multiple of ten (60 - 54 = 6).

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
9
Doubled → 18 → 1 + 8
Pos 4
3
Unchanged
Pos 5
6
Doubled → 12 → 1 + 2
Pos 6
8
Unchanged
Pos 7
0
Doubled → 0
Pos 8
5
Unchanged
Pos 9
0
Doubled → 0
Check
6
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 9 → 18 → 9 6 → 12 → 3 0 → 0 0 → 0

Step 2: Add all digits plus the NPI constant

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

2 + 0 + 1 + 8 + 3 + 1 + 2 + 8 + 0 + 5 + 0 + 24 = 54

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

The next multiple of ten after 54 is 60. The difference is the calculated check digit.

60 - 54 = 6
This NPI is valid
The calculated check digit is 6, which matches the last digit of 1093680506.

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1093680506, enumerated as an "organization" on October 06, 2025.

The provider is located at 4100 ALPHA RD STE 412 DALLAS, TX 75244 and the phone number is (469) 870-5336.

Public Health or Welfare with taxonomy code 251K00000X.