DR. YOUSEF NABIL LAFI PHARMD
NPI 1003684507
Pharmacist - Infectious Diseases in Chapel Hill, NC

NPI Status: Active since December 13, 2023

Contact Information

100 EASTOWNE DR
CHAPEL HILL, NC
ZIP 27514
Phone: (984) 974-7198

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

Individual
Male
Pharmacist
Infectious Diseases

About YOUSEF LAFI

This page provides the complete NPI Profile along with additional information for Yousef Lafi, a provider established in Chapel Hill, North Carolina with a medical specialization in Pharmacist, focusing in infectious diseases . The healthcare provider is registered in the NPI registry with number 1003684507 assigned on December 2023. The practitioner's primary taxonomy code is 1835I0206X with license number 25077 (NC). The provider is registered as an individual and his NPI record was last updated one year ago.

NPI: 1003684507
Provider Name: DR. YOUSEF NABIL LAFI PHARMD
Gender: Male
Entity Type: Individual
Location Address: 100 EASTOWNE DR CHAPEL HILL, NC 27514
Location Phone: (984) 974-7198
Mailing Address: 100 EASTOWNE DR CHAPEL HILL, NC 27514
Mailing Phone: (984) 974-7198
Is Sole Proprietor?: No
Enumeration Date: 12-13-2023
Last Update Date: 03-04-2025
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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 Infectious Diseases
Taxonomy Code: 1835I0206X
Type: Pharmacy Service Providers
License No.: 25077
License State: NC
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.

Secondary Taxonomies

The provider has reported to the NPI enumerator additional taxonomy codes. Multiple taxonomy codes may represent subspecialties or other areas of specialization the provider maybe licensed to practice.

No.	Taxonomy Code	Type	Classification / Specialization	License No. (State)
1	1835P0018X	Pharmacy Service Providers	Pharmacist Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist	25077 (NC)

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 1003684507, we treat the final digit (7) 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 53. The final step is to find the difference between that total and the next multiple of ten (60 - 53 = 7).

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 → 0

Pos 4

Unchanged

Pos 5

Doubled → 12 → 1 + 2

Pos 6

Unchanged

Pos 7

Doubled → 8

Pos 8

Unchanged

Pos 9

Doubled → 0

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 0 → 0 6 → 12 → 3 4 → 8 0 → 0

Step 2: Add all digits plus the NPI constant

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

2 + 0 + 0 + 3 + 1 + 2 + 8 + 8 + 5 + 0 + 24 = 53

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

The next multiple of ten after 53 is 60. The difference is the calculated check digit.

60 - 53 = 7

This NPI is valid

The calculated check digit is 7, which matches the last digit of 1003684507.