GAR CHAN MD
NPI 1306917497
Emergency Medicine in Manhasset, NY

NPI Status: Active since November 13, 2006

Contact Information

NSUH-DEPT OF EMERGENCY MEDICINE
300 COMMUNITY DRIVE
MANHASSET, NY
ZIP 11030
Phone: (516) 562-3090

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

Individual
Male
Emergency Medicine

About GAR CHAN

This page provides the complete NPI Profile along with additional information for Gar Chan, a provider established in Manhasset, New York with a medical specialization in Emergency Medicine. The healthcare provider is registered in the NPI registry with number 1306917497 assigned on November 2006. The practitioner's primary taxonomy code is 207P00000X with license number 225498 (NY). The provider is registered as an individual and his NPI record was last updated 18 years ago.

NPI: 1306917497
Provider Name: GAR CHAN MD
Gender: Male
Entity Type: Individual
Location Address: NSUH-DEPT OF EMERGENCY MEDICINE 300 COMMUNITY DRIVE MANHASSET, NY 11030
Location Phone: (516) 562-3090
Mailing Address: NSUH-DEPT OF EMERGENCY MEDICINE 300 COMMUNITY DRIVE MANHASSET, NY 11030
Mailing Phone: (516) 562-3090
Is Sole Proprietor?: No
Enumeration Date: 11-13-2006
Last Update Date: 06-27-2008
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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: Emergency Medicine
Taxonomy Code: 207P00000X
Type: Allopathic & Osteopathic Physicians
License No.: 225498
License State: NY
Taxonomy Description: An emergency physician focuses on the immediate decision making and action necessary to prevent death or any further disability both in the pre-hospital setting by directing emergency medical technicians and in the emergency department. The emergency physician provides immediate recognition, evaluation, care, stabilization and disposition of a generally diversified population of adult and pediatric patients in response to acute illness and injury.

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	207PT0002X	Allopathic & Osteopathic Physicians	Emergency Medicine Medical Toxicology	225498 (NY)

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 1306917497, 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 63. The final step is to find the difference between that total and the next multiple of ten (70 - 63 = 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 → 18 → 1 + 8

Pos 6

Unchanged

Pos 7

Doubled → 14 → 1 + 4

Pos 8

Unchanged

Pos 9

Doubled → 18 → 1 + 8

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 9 → 18 → 9 7 → 14 → 5 9 → 18 → 9

Step 2: Add all digits plus the NPI constant

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

2 + 3 + 0 + 6 + 1 + 8 + 1 + 1 + 4 + 4 + 1 + 8 + 24 = 63

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

The next multiple of ten after 63 is 70. The difference is the calculated check digit.

70 - 63 = 7

This NPI is valid

The calculated check digit is 7, which matches the last digit of 1306917497.