DR. DOUGLAS MADER DVM
NPI 1669830485
Veterinarian in Marathon, FL

NPI Status: Active since February 08, 2016

Contact Information

5001 OVERSEAS HWY
MARATHON, FL
ZIP 33050
Phone: (305) 743-7099
Fax: (305) 743-4057

NPI Profile Information
Primary Taxonomy
NPI Validation
Other Providers Same Location
Frequently Asked Questions

Individual
Male
Veterinarian

About DOUGLAS MADER

This page provides the complete NPI Profile along with additional information for Douglas Mader, a provider established in Marathon, Florida with a medical specialization in Veterinarian. The healthcare provider is registered in the NPI registry with number 1669830485 assigned on February 2016. The practitioner's primary taxonomy code is 174M00000X with license number VM7231 (FL). The provider is registered as an individual and his NPI record was last updated 10 years ago.

NPI: 1669830485
Provider Name: DR. DOUGLAS MADER DVM
Gender: Male
Entity Type: Individual
Location Address: 5001 OVERSEAS HWY MARATHON, FL 33050
Location Phone: (305) 743-7099
Location Fax: (305) 743-4057
Mailing Address: 5001 OVERSEAS HWY MARATHON, FL 33050
Mailing Phone: (305) 743-7099
Mailing Fax: (305) 743-4057
Is Sole Proprietor?: No
Enumeration Date: 02-08-2016
Last Update Date: 02-08-2016
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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: Veterinarian
Taxonomy Code: 174M00000X
Type: Other Service Providers
License No.: VM7231
License State: FL
Taxonomy Description: A doctor of veterinary medicine, trained and authorized to practice veterinarian medicine and surgery.

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 1669830485, we treat the final digit (5) 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 65. The final step is to find the difference between that total and the next multiple of ten (70 - 65 = 5).

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

Doubled → 2

Pos 2

Unchanged

Pos 3

Doubled → 12 → 1 + 2

Pos 4

Unchanged

Pos 5

Doubled → 16 → 1 + 6

Pos 6

Unchanged

Pos 7

Doubled → 0

Pos 8

Unchanged

Pos 9

Doubled → 16 → 1 + 6

Check

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 8 → 16 → 7 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 + 6 + 1 + 2 + 9 + 1 + 6 + 3 + 0 + 4 + 1 + 6 + 24 = 65

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

The next multiple of ten after 65 is 70. The difference is the calculated check digit.

70 - 65 = 5

This NPI is valid

The calculated check digit is 5, which matches the last digit of 1669830485.