JAMES F DAVIS RPH
NPI 1689591620
Pharmacist - Infectious Diseases in Mount Pleasant, WI

NPI Status: Active since July 01, 2026

Contact Information

3801 SPRING ST
MOUNT PLEASANT, WI
ZIP 53405
Phone: (262) 687-4308

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Newly Listed Provider
This NPI profile has been added to the NPI registry within the last 30 days.

Table of Contents

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

Individual
Male
Pharmacist
Infectious Diseases

About JAMES DAVIS

This page provides the complete NPI Profile along with additional information for James Davis, a provider established in Mount Pleasant, Wisconsin with a medical specialization in Pharmacist, focusing in infectious diseases . The healthcare provider is registered in the NPI registry with number 1689591620 assigned on July 2026. The practitioner's primary taxonomy code is 1835I0206X with license number 11569-40 (WI). The provider is registered as an individual and his NPI record was last updated July 2026.

NPI: 1689591620
Provider Name: JAMES F DAVIS RPH
Gender: Male
Entity Type: Individual
Location Address: 3801 SPRING ST MOUNT PLEASANT, WI 53405
Location Phone: (262) 687-4308
Mailing Address: 8431 S 44TH ST FRANKLIN, WI 53132
Mailing Phone: (262) 687-4308
Is Sole Proprietor?: No
Enumeration Date: 07-01-2026
Last Update Date: 07-01-2026
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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 Infectious Diseases
Taxonomy Code: 1835I0206X
Type: Pharmacy Service Providers
License No.: 11569-40
License State: WI
Taxonomy Description: A licensed pharmacist who has demonstrated specialized knowledge and skill in the use of microbiology and pharmacology to develop, implement, and monitor drug regimens that incorporate antimicrobials to optimize therapy for patients.

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 1689591620, 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 → 16 → 1 + 6

Pos 4

Unchanged

Pos 5

Doubled → 10 → 1 + 0

Pos 6

Unchanged

Pos 7

Doubled → 2

Pos 8

Unchanged

Pos 9

Doubled → 4

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 8 → 16 → 7 5 → 10 → 1 1 → 2 2 → 4

Step 2: Add all digits plus the NPI constant

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

2 + 6 + 1 + 6 + 9 + 1 + 0 + 9 + 2 + 6 + 4 + 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 1689591620.