YOUSSEF BAHAAELDIN HAFEZ MD
NPI 1831037472
General Acute Care Hospital in Saint Louis, MO

NPI Status: Active since March 24, 2026

Contact Information

1201 S GRAND BLVD
SAINT LOUIS, MO
ZIP 63104
Phone: (314) 577-8000
Fax: (314) 977-1664

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

Individual
Male
General Acute Care Hospital

About YOUSSEF HAFEZ

This page provides the complete NPI Profile along with additional information for Youssef Hafez, a provider established in Saint Louis, Missouri with a medical specialization in General Acute Care Hospital. The healthcare provider is registered in the NPI registry with number 1831037472 assigned on March 2026. The practitioner's primary taxonomy code is 282N00000X. The provider is registered as an individual and his NPI record was last updated March 2026.

NPI: 1831037472
Provider Name: YOUSSEF BAHAAELDIN HAFEZ MD
Gender: Male
Entity Type: Individual
Location Address: 1201 S GRAND BLVD SAINT LOUIS, MO 63104
Location Phone: (314) 577-8000
Location Fax: (314) 977-1664
Mailing Address: 1008 S SPRING AVE SAINT LOUIS, MO 63110
Mailing Phone: (314) 617-3237
Mailing Fax: (314) 977-1664
Is Sole Proprietor?: No
Enumeration Date: 03-24-2026
Last Update Date: 03-25-2026
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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: General Acute Care Hospital
Taxonomy Code: 282N00000X
Type: Hospitals
Taxonomy Description: An acute general hospital is an institution whose primary function is to provide inpatient diagnostic and therapeutic services for a variety of medical conditions, both surgical and non-surgical, to a wide population group. The hospital treats patients in an acute phase of illness or injury, characterized by a single episode or a fairly short duration, from which the patient returns to his or her normal or previous level of activity.

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 1831037472, we treat the final digit (2) 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 58. The final step is to find the difference between that total and the next multiple of ten (60 - 58 = 2).

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 → 6

Pos 4

Unchanged

Pos 5

Doubled → 0

Pos 6

Unchanged

Pos 7

Doubled → 14 → 1 + 4

Pos 8

Unchanged

Pos 9

Doubled → 14 → 1 + 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 3 → 6 0 → 0 7 → 14 → 5 7 → 14 → 5

Step 2: Add all digits plus the NPI constant

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

2 + 8 + 6 + 1 + 0 + 3 + 1 + 4 + 4 + 1 + 4 + 24 = 58

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

The next multiple of ten after 58 is 60. The difference is the calculated check digit.

60 - 58 = 2

This NPI is valid

The calculated check digit is 2, which matches the last digit of 1831037472.