HALLOWELL TODARO CENTER PLLC
NPI 1689024580
Clinic/Center - Mental Health (Including Community Mental Health Center) in Seattle, WA

NPI Status: Active since June 21, 2016

Contact Information

4530 UNION BAY PL NE STE 214
SEATTLE, WA
ZIP 98105
Phone: (206) 420-7345
Fax: (206) 829-9678

NPI Profile Information
Primary Taxonomy
Secondary Locations
Authorized Official
NPI Validation
Other Providers Same Location
Frequently Asked Questions

Organization
Clinic/Center
Mental Health (Including Community Menta...

About HALLOWELL TODARO CENTER PLLC

This page provides the complete NPI Profile along with additional information for Hallowell Todaro Center Pllc, a provider established in Seattle, Washington operating as a Clinic/center, focusing in mental health (including community mental health center) . The healthcare provider is registered in the NPI registry with number 1689024580 assigned on June 2016. The practitioner's primary taxonomy code is 261QM0801X. The provider is registered as an organization and their NPI record was last updated one year ago. The provider's . The authorized official of this NPI record is Lesley Jo Todaro Lmft (Owner)

NPI: 1689024580
Provider Legal Name: HALLOWELL TODARO CENTER PLLC
Other Organization Name
Other Name Type: (6)
Entity Type: Organization
Location Address: 4530 UNION BAY PL NE STE 214 SEATTLE, WA 98105
Location Phone: (206) 420-7345
Location Fax: (206) 829-9678
Mailing Address: 4530 UNION BAY PL NE STE 214 SEATTLE, WA 98105
Mailing Phone: (206) 420-7345
Is Sole Proprietor?: No
Is Organization Subpart?: No
Enumeration Date: 06-21-2016
Last Update Date: 04-30-2025
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Location Map

Secondary Locations

1440 10th St Ste 102A
Bellingham, WA 98225
(206) 420-7345

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: Clinic/Center Mental Health (Including Community Mental Health Center)
Taxonomy Code: 261QM0801X
Type: Ambulatory Health Care Facilities

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: LESLEY JO TODARO LMFT
Authorized Official Title: OWNER
Authorized Official Phone: (206) 420-7345

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 1689024580, 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 70. The final step is to find the difference between that total and the next multiple of ten (70 - 70 = 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 → 16 → 1 + 6

Pos 4

Unchanged

Pos 5

Doubled → 0

Pos 6

Unchanged

Pos 7

Doubled → 8

Pos 8

Unchanged

Pos 9

Doubled → 16 → 1 + 6

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 8 → 16 → 7 0 → 0 4 → 8 8 → 16 → 7

Step 2: Add all digits plus the NPI constant

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

2 + 6 + 1 + 6 + 9 + 0 + 2 + 8 + 5 + 1 + 6 + 24 = 70

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

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

70 - 70 = 0

This NPI is valid

The calculated check digit is 0, which matches the last digit of 1689024580.