KOIS DENTISTRY
NPI 1467310938
Dentist - Prosthodontics in Seattle, WA

NPI Status: Active since January 13, 2026

Contact Information

1001 FAIRVIEW AVE N STE 2000
SEATTLE, WA
ZIP 98109
Phone: (206) 515-9500

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  • Organization
  • Dentist
  • Prosthodontics

About KOIS DENTISTRY

This page provides the complete NPI Profile along with additional information for Kois Dentistry, a provider established in Seattle, Washington operating as a Dentist, focusing in prosthodontics . The healthcare provider is registered in the NPI registry with number 1467310938 assigned on January 2026. The practitioner's primary taxonomy code is 1223P0700X. The provider is registered as an organization and their NPI record was last updated January 2026. The organization operates as a Single Specialty Group with one or more individual practitioners, all of who practice with the same area of specialization. The authorized official of this NPI record is Dr. Dean E Kois Dmd (Dentist)

NPI
1467310938
Provider Name
KOIS DENTISTRY
Entity Type
Organization
Location Address
1001 FAIRVIEW AVE N STE 2000 SEATTLE, WA 98109
Location Phone
(206) 515-9500
Mailing Address
1001 FAIRVIEW AVE N STE 2000 SEATTLE, WA 98109
Mailing Phone
(206) 515-9500
Is Sole Proprietor?
No
Is Organization Subpart?
No
Enumeration Date
01-13-2026
Last Update Date
01-13-2026
Code Navigator

A dentist like Kois Dentistry is a skilled in and licensed provider that diagnoses and treats problems with patients teeth, gums, and related parts of the mouth. Dentists educate patients on how to take care of the teeth and gums and provide information on diet choices that affect oral health. Dentists must be licensed in the state in which they work.

Location Map

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

Dentist Prosthodontics

Taxonomy Code
1223P0700X
Type
Dental Providers
Taxonomy Description
That branch of dentistry pertaining to the restoration and maintenance of oral functions, comfort, appearance and health of the patient by the restoration of natural teeth and/or the replacement of missing teeth and contiguous oral and maxillofacial tissues with artificial substitutes.

Group Taxonomy 193400000X SINGLE SPECIALTY GROUP

This provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.

Authorized Official

The authorized official is the designated individual with the legal authority to make changes to the provider’s official NPI record. For organizations, the authorized official must be a general partner, chairman of the board, CEO, CFO or a direct owner holding at least a 5 percent stake in the medical organization.

Authorized Official Name

DR. DEAN E KOIS DMD

Authorized Official Title
DENTIST
Authorized Official Phone
(206) 909-4597

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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 1467310938, we treat the final digit (8) 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 62. The final step is to find the difference between that total and the next multiple of ten (70 - 62 = 8).

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
4
Unchanged
Pos 3
6
Doubled → 12 → 1 + 2
Pos 4
7
Unchanged
Pos 5
3
Doubled → 6
Pos 6
1
Unchanged
Pos 7
0
Doubled → 0
Pos 8
9
Unchanged
Pos 9
3
Doubled → 6
Check
8
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 6 → 12 → 3 3 → 6 0 → 0 3 → 6

Step 2: Add all digits plus the NPI constant

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

2 + 4 + 1 + 2 + 7 + 6 + 1 + 0 + 9 + 6 + 24 = 62

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

The next multiple of ten after 62 is 70. The difference is the calculated check digit.

70 - 62 = 8
This NPI is valid
The calculated check digit is 8, which matches the last digit of 1467310938.

Other Providers at the Same Location


The following 3 providers are registered at the same or a nearby location.

Dentist (Orthodontics and Dentofacial Orthopedics)
1001 FAIRVIEW AVE N STE 2000
SEATTLE, WA 98109
Dentist (Orthodontics and Dentofacial Orthopedics)
1001 FAIRVIEW AVE N STE 2000
SEATTLE, WA 98109
Dentist (Prosthodontics)
1001 FAIRVIEW AVE N STE 2000
SEATTLE, WA 98109

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1467310938, enumerated as an "organization" on January 13, 2026.

The provider is located at 1001 FAIRVIEW AVE N STE 2000 SEATTLE, WA 98109 and the phone number is (206) 515-9500.

Dentist with taxonomy code 1223P0700X and a focus in Prosthodontics.