DR. MICHELLE MEI-HSUAN KO DDS., MS.
NPI 1275867855
Dentist - Periodontics in Bellevue, WA
NPI Status: Active since September 29, 2009
Contact Information
12826 SE 40TH LN STE 100
BELLEVUE, WA
ZIP 98006
Phone: (425) 877-1423
Some details in this NPI profile have been updated in the NPI registry within the last 30 days.
- Individual
- Female
- Dentist
- Periodontics
About MICHELLE KO
This page provides the complete NPI Profile along with additional information for Michelle Ko, a provider established in Bellevue, Washington with a medical specialization in Dentist, focusing in periodontics . The healthcare provider is registered in the NPI registry with number 1275867855 assigned on September 2009. The practitioner's primary taxonomy code is 1223P0300X with license number DE60631123 (WA). The provider is registered as an individual and her NPI record was last updated May 2026.
- NPI
- 1275867855
- Provider Name
- DR. MICHELLE MEI-HSUAN KO DDS., MS.
- Other Name
- MEI-HSUAN KO DDS. MS.
- Other Name Type
- Former Name (1)
- Gender
- Female
- Entity Type
- Individual
- Location Address
- 12826 SE 40TH LN STE 100 BELLEVUE, WA 98006
- Location Phone
- (425) 877-1423
- Mailing Address
- 12826 SE 40TH LN STE 100 BELLEVUE, WA 98006
- Mailing Phone
- (206) 474-7394
- Is Sole Proprietor?
- No
- Enumeration Date
- 09-29-2009
- Last Update Date
- 05-26-2026
- Code Navigator
A dentist like Michelle Ko 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 Periodontics
- Taxonomy Code
- 1223P0300X
- Type
- Dental Providers
- License No.
- DE60631123
- License State
- WA
- Taxonomy Description
- That specialty of dentistry which encompasses the prevention, diagnosis and treatment of diseases of the supporting and surrounding tissues of the teeth or their substitutes and the maintenance of the health, function and esthetics of these structures and tissues.
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 | 122300000X | Dental Providers | Dentist | DL10735 (MA) |
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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 1275867855, we treat the final digit (5) 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 65. The final step is to find the difference between that total and the next multiple of ten (70 - 65 = 5).
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.
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.
Step 2: Add all digits plus the NPI constant
Add the transformed values, the unchanged digits, and the constant 24.
Step 3: Find the amount needed to reach the next multiple of 10
The next multiple of ten after 65 is 70. The difference is the calculated check digit.
Other Providers at the Same Location
The following 2 providers are registered at the same or a nearby location.
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1275867855, enumerated as an "individual" on September 29, 2009.
The provider is located at 12826 SE 40TH LN STE 100 BELLEVUE, WA 98006 and the phone number is (425) 877-1423.
Dentist with taxonomy code 1223P0300X and a focus in Periodontics.
