MARGARET ROOKS PHARMD
NPI 1992680490
Pharmacist - Cardiology in Huntsville, AL

NPI Status: Active since August 06, 2025

Contact Information

930 FRANKLIN ST SE
HUNTSVILLE, AL
ZIP 35801
Phone: (256) 801-6949

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

Individual
Pharmacist
Cardiology

About MARGARET ROOKS

This page provides the complete NPI Profile along with additional information for Margaret Rooks, a provider established in Huntsville, Alabama operating as a Pharmacist, focusing in cardiology . The healthcare provider is registered in the NPI registry with number 1992680490 assigned on August 2025. The practitioner's primary taxonomy code is 1835C0206X with license number 23830 (AL). The provider is registered as an individual and their NPI record was last updated one year ago.

NPI: 1992680490
Provider Name: MARGARET ROOKS PHARMD
Gender
Entity Type: Individual
Location Address: 930 FRANKLIN ST SE HUNTSVILLE, AL 35801
Location Phone: (256) 801-6949
Mailing Address: 606 DURBIN LN SW MADISON, AL 35756
Is Sole Proprietor?: No
Enumeration Date: 08-06-2025
Last Update Date: 08-06-2025
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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: Pharmacist Cardiology
Taxonomy Code: 1835C0206X
Type: Pharmacy Service Providers
License No.: 23830
License State: AL
Taxonomy Description: A licensed pharmacist who has demonstrated specialized knowledge and skill in direct patient care to ensure safe and effective use of medications in patients with cardiovascular disease, as members of interprofessional health care teams.

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 1992680490, we treat the final digit (0) 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 70. The final step is to find the difference between that total and the next multiple of ten (70 - 70 = 0).

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 → 18 → 1 + 8

Pos 4

Unchanged

Pos 5

Doubled → 12 → 1 + 2

Pos 6

Unchanged

Pos 7

Doubled → 0

Pos 8

Unchanged

Pos 9

Doubled → 18 → 1 + 8

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 9 → 18 → 9 6 → 12 → 3 0 → 0 9 → 18 → 9

Step 2: Add all digits plus the NPI constant

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

2 + 9 + 1 + 8 + 2 + 1 + 2 + 8 + 0 + 4 + 1 + 8 + 24 = 70

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

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

70 - 70 = 0

This NPI is valid

The calculated check digit is 0, which matches the last digit of 1992680490.