GREGORY KWOK-KAY CHAN MD
NPI 1982652517
Surgery - Plastic and Reconstructive Surgery in Seattle, WA

NPI Status: Active since May 05, 2006

Contact Information

515 MINOR AVE
SEATTLE, WA
ZIP 98104
Phone: (206) 386-9500
Fax: (206) 386-9605

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  • Individual
  • Male
  • Surgery
  • Plastic and Reconstructive Surgery

About GREGORY CHAN

This page provides the complete NPI Profile along with additional information for Gregory Chan, a provider established in Seattle, Washington with a medical specialization in Surgery, focusing in plastic and reconstructive surgery . The healthcare provider is registered in the NPI registry with number 1982652517 assigned on May 2006. The practitioner's primary taxonomy code is 2086S0122X with license number MD00012049 (WA). The provider is registered as an individual and his NPI record was last updated one year ago.

NPI
1982652517
Provider Name
GREGORY KWOK-KAY CHAN MD
Gender
Male
Entity Type
Individual
Location Address
515 MINOR AVE SEATTLE, WA 98104
Location Phone
(206) 386-9500
Location Fax
(206) 386-9605
Mailing Address
PO BOX 3489 SEATTLE, WA 98114
Mailing Phone
(206) 386-9500
Mailing Fax
(206) 386-9605
Is Sole Proprietor?
No
Enumeration Date
05-05-2006
Last Update Date
09-11-2025
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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

Surgery Plastic and Reconstructive Surgery

Taxonomy Code
2086S0122X
Type
Allopathic & Osteopathic Physicians
License No.
MD00012049
License State
WA
Taxonomy Description
A surgeon who specializes in plastic and reconstructive surgery.

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)
1207Y00000XAllopathic & Osteopathic Physicians

Otolaryngology

MD00012049 (WA)

Insurance Plans Accepted

According to publicly available information the provider might be accepting the following health plans from these health insurance companies:

Specific plan information not avaialable, please contact the provider to verify if your insurance plan is accepted.

Specific plan information not avaialable, please contact the provider to verify if your insurance plan is accepted.

*Please verify directly with this provider to make sure your insurance plan is currently accepted.

Additional Identifiers

The NPI Enumerator encourages providers to submit additional identifiers with their NPI application although the submission of this information is optional. The additional identifier(s) section includes other numbers or codes currently or formerly used as an identifier for the provider by other public healthcare entities. The identifiers may include UPIN, NSC, OSCAR, DEA, Medicaid State or PIN identification numbers.

Identifier Type / Code Identifier State Identifier Issuer
1003490MEDICAID (05)WA 
C299OTHER (01)WAREGENCE

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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 1982652517, 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
1
Doubled → 2
Pos 2
9
Unchanged
Pos 3
8
Doubled → 16 → 1 + 6
Pos 4
2
Unchanged
Pos 5
6
Doubled → 12 → 1 + 2
Pos 6
5
Unchanged
Pos 7
2
Doubled → 4
Pos 8
5
Unchanged
Pos 9
1
Doubled → 2
Check
7
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 8 → 16 → 7 6 → 12 → 3 2 → 4 1 → 2

Step 2: Add all digits plus the NPI constant

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

2 + 9 + 1 + 6 + 2 + 1 + 2 + 5 + 4 + 5 + 2 + 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 1982652517.

Other Providers at the Same Location


The following 20 providers are registered at the same or a nearby location.

Internal Medicine (Gastroenterology)
515 MINOR AVE, SUITE 220
SEATTLE, WA 98104
Physician Assistant
515 MINOR AVE, SUITE 300
SEATTLE, WA 98104
Internal Medicine (Rheumatology)
515 MINOR AVE, STE 300
SEATTLE, WA 98104
Internal Medicine (Pulmonary Disease)
515 MINOR AVE, #300
SEATTLE, WA 98104
Nurse Practitioner
515 MINOR AVE, STE 300
SEATTLE, WA 98104
Nurse Practitioner
515 MINOR AVE, SUITE 300
SEATTLE, WA 98104
Internal Medicine
515 MINOR AVE, SUITE 300
SEATTLE, WA 98104
Nurse Practitioner
515 MINOR AVE, STE 210
SEATTLE, WA 98104
Internal Medicine (Endocrinology, Diabetes & Metabolism)
515 MINOR AVE, SUITE 300
SEATTLE, WA 98104
Internal Medicine (Gastroenterology)
515 MINOR AVE, SUITE 200
SEATTLE, WA 98104
Internal Medicine
515 MINOR AVE, SUITE 300
SEATTLE, WA 98104
Internal Medicine
515 MINOR AVE, STE 300
SEATTLE, WA 98104
Internal Medicine
515 MINOR AVE, SUITE 300
SEATTLE, WA 98104
Internal Medicine
515 MINOR AVE, SUITE 300
SEATTLE, WA 98104
Internal Medicine (Pulmonary Disease)
515 MINOR AVE, SUITE 300
SEATTLE, WA 98104
Internal Medicine (Gastroenterology)
515 MINOR AVE, SUITE 200
SEATTLE, WA 98104
Internal Medicine (Endocrinology, Diabetes & Metabolism)
515 MINOR AVE, STE 300
SEATTLE, WA 98104
Psychiatry & Neurology (Psychiatry)
515 MINOR AVE, STE 220
SEATTLE, WA 98104
Psychiatry & Neurology (Psychiatry)
515 MINOR AVE, #220
SEATTLE, WA 98104
Physical Therapist
515 MINOR AVE, SUITE 22
SEATTLE, WA 98104

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1982652517, enumerated as an "individual" on May 05, 2006.

The provider is located at 515 MINOR AVE SEATTLE, WA 98104 and the phone number is (206) 386-9500.

Surgery with taxonomy code 2086S0122X and a focus in Plastic and Reconstructive Surgery.

The provider might be accepting Accepts: Medicare and Medicaid. Please consult your insurance carrier or call the provider to verify.