DR. SENG HUAN A OOI
NPI 1902261100
Surgery - Plastic and Reconstructive Surgery in Chicago, IL

NPI Status: Active since December 15, 2015

Contact Information

5841 S MARYLAND AVE # MC6035
SUITE J-641
CHICAGO, IL
ZIP 60637
Phone: (773) 702-6302
Fax: (773) 702-1634

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

Individual
Male
Surgery
Plastic and Reconstructive Surgery

About SENG HUAN OOI

This page provides the complete NPI Profile along with additional information for Seng Huan Ooi, a provider established in Chicago, Illinois with a medical specialization in Surgery, focusing in plastic and reconstructive surgery . The healthcare provider is registered in the NPI registry with number 1902261100 assigned on December 2015. The practitioner's primary taxonomy code is 2086S0122X with license number 125067893 (IL). The provider is registered as an individual and his NPI record was last updated 11 years ago.

NPI: 1902261100
Provider Name: DR. SENG HUAN A OOI
Gender: Male
Entity Type: Individual
Location Address: 5841 S MARYLAND AVE # MC6035 SUITE J-641 CHICAGO, IL 60637
Location Phone: (773) 702-6302
Location Fax: (773) 702-1634
Mailing Address: 5841 S MARYLAND AVE # MC6035 SUITE J-641 CHICAGO, IL 60637
Mailing Phone: (773) 702-6302
Mailing Fax: (773) 702-1634
Is Sole Proprietor?: No
Enumeration Date: 12-15-2015
Last Update Date: 12-15-2015
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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: Surgery Plastic and Reconstructive Surgery
Taxonomy Code: 2086S0122X
Type: Allopathic & Osteopathic Physicians
License No.: 125067893
License State: IL
Taxonomy Description: A surgeon who specializes in plastic and reconstructive surgery.

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 1902261100, 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 50. The final step is to find the difference between that total and the next multiple of ten (50 - 50 = 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 → 0

Pos 4

Unchanged

Pos 5

Doubled → 4

Pos 6

Unchanged

Pos 7

Doubled → 2

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 2 → 4 1 → 2 0 → 0

Step 2: Add all digits plus the NPI constant

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

2 + 9 + 0 + 2 + 4 + 6 + 2 + 1 + 0 + 24 = 50

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

The next multiple of ten after 50 is 50. The difference is the calculated check digit.

50 - 50 = 0

This NPI is valid

The calculated check digit is 0, which matches the last digit of 1902261100.