RACHEL LANGENDERFER PHARMD
NPI 1629944285
Clinical Pharmacology in Greenville, SC

NPI Status: Active since October 13, 2025

Contact Information

1 SAINT FRANCIS DR
GREENVILLE, SC
ZIP 29601
Phone: (864) 255-1158

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

Individual
Female
Clinical Pharmacology

About RACHEL LANGENDERFER

This page provides the complete NPI Profile along with additional information for Rachel Langenderfer, a provider established in Greenville, South Carolina with a medical specialization in Clinical Pharmacology. The healthcare provider is registered in the NPI registry with number 1629944285 assigned on October 2025. The practitioner's primary taxonomy code is 208U00000X with license number 36779 (SC). The provider is registered as an individual and her NPI record was last updated one year ago.

NPI: 1629944285
Provider Name: RACHEL LANGENDERFER PHARMD
Gender: Female
Entity Type: Individual
Location Address: 1 SAINT FRANCIS DR GREENVILLE, SC 29601
Location Phone: (864) 255-1158
Mailing Address: 208 CLARITY CT GREER, SC 29650
Mailing Phone: (406) 698-8621
Is Sole Proprietor?: No
Enumeration Date: 10-13-2025
Last Update Date: 10-13-2025
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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: Clinical Pharmacology
Taxonomy Code: 208U00000X
Type: Allopathic & Osteopathic Physicians
License No.: 36779
License State: SC
Taxonomy Description: Clinical pharmacology encompasses the spectrum of activities related to the discovery, development, regulation, and utilization of safe and effective drugs.

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 1629944285, 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 75. The final step is to find the difference between that total and the next multiple of ten (80 - 75 = 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 → 4

Pos 4

Unchanged

Pos 5

Doubled → 18 → 1 + 8

Pos 6

Unchanged

Pos 7

Doubled → 8

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 2 → 4 9 → 18 → 9 4 → 8 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 + 4 + 9 + 1 + 8 + 4 + 8 + 2 + 1 + 6 + 24 = 75

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

The next multiple of ten after 75 is 80. The difference is the calculated check digit.

80 - 75 = 5

This NPI is valid

The calculated check digit is 5, which matches the last digit of 1629944285.