HAYLEY ISHIHARA
NPI 1255295481
Art Therapist in Milwaukee, WI

NPI Status: Active since December 11, 2025

Contact Information

2266 N PROSPECT AVE STE 304
MILWAUKEE, WI
ZIP 53202
Phone: (414) 323-5833

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

Individual
Female
Art Therapist

About HAYLEY ISHIHARA

This page provides the complete NPI Profile along with additional information for Hayley Ishihara, a provider established in Milwaukee, Wisconsin with a medical specialization in Art Therapist. The healthcare provider is registered in the NPI registry with number 1255295481 assigned on December 2025. The practitioner's primary taxonomy code is 221700000X with license number 8742-226 (WI). The provider is registered as an individual and her NPI record was last updated one year ago.

NPI: 1255295481
Provider Name: HAYLEY ISHIHARA
Gender: Female
Entity Type: Individual
Location Address: 2266 N PROSPECT AVE STE 304 MILWAUKEE, WI 53202
Location Phone: (414) 323-5833
Mailing Address: 3425 S CHASE AVE MILWAUKEE, WI 53207
Is Sole Proprietor?: Yes
Enumeration Date: 12-11-2025
Last Update Date: 12-11-2025
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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: Art Therapist
Taxonomy Code: 221700000X
Type: Respiratory, Developmental, Rehabilitative and Restorative Service Providers
License No.: 8742-226
License State: WI
Taxonomy Description: (1) An individual who uses art to achieve the therapeutic goals of symptom relief, emotional integration, and recovery from or adjustment to illness or disability. (2) An art therapist uses a form of treatment that enables patients with mental or physical disabilities to use art as a way of expressing and dealing with feelings and inner conflicts. (3) An individual who uses arts modalities and creative processes during intentional intervention in therapeutic, rehabilitative, community, or educational settings to foster health, communication, and expression; promote the integration of physical, emotional, cognitive, and social functioning; enhance self-awareness; and facilitate change.

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 1255295481, we treat the final digit (1) 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 59. The final step is to find the difference between that total and the next multiple of ten (60 - 59 = 1).

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 → 10 → 1 + 0

Pos 4

Unchanged

Pos 5

Doubled → 4

Pos 6

Unchanged

Pos 7

Doubled → 10 → 1 + 0

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 5 → 10 → 1 2 → 4 5 → 10 → 1 8 → 16 → 7

Step 2: Add all digits plus the NPI constant

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

2 + 2 + 1 + 0 + 5 + 4 + 9 + 1 + 0 + 4 + 1 + 6 + 24 = 59

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

The next multiple of ten after 59 is 60. The difference is the calculated check digit.

60 - 59 = 1

This NPI is valid

The calculated check digit is 1, which matches the last digit of 1255295481.