SYDNEY L WALLACE LAC
NPI 1154010551
Counselor in Phoenix, AZ

NPI Status: Active since May 02, 2023

Contact Information

3330 N 2ND ST STE 601
PHOENIX, AZ
ZIP 85012
Phone: (602) 230-7373
Fax: (602) 230-5105

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

Individual
Female
Counselor

About SYDNEY WALLACE

This page provides the complete NPI Profile along with additional information for Sydney Wallace, a provider established in Phoenix, Arizona with a medical specialization in Counselor. The healthcare provider is registered in the NPI registry with number 1154010551 assigned on May 2023. The practitioner's primary taxonomy code is 101Y00000X with license number LAC-20532 (AZ). The provider is registered as an individual and her NPI record was last updated 3 years ago.

NPI: 1154010551
Provider Name: SYDNEY L WALLACE LAC
Gender: Female
Entity Type: Individual
Location Address: 3330 N 2ND ST STE 601 PHOENIX, AZ 85012
Location Phone: (602) 230-7373
Location Fax: (602) 230-5105
Mailing Address: 3101 N CENTRAL AVE STE 500 PHOENIX, AZ 85012
Mailing Phone: (602) 230-7373
Mailing Fax: (602) 230-5105
Is Sole Proprietor?: No
Enumeration Date: 05-02-2023
Last Update Date: 05-02-2023
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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: Counselor
Taxonomy Code: 101Y00000X
Type: Behavioral Health & Social Service Providers
License No.: LAC-20532
License State: AZ
Taxonomy Description: A provider who is trained and educated in the performance of behavior health services through interpersonal communications and analysis. Training and education at the specialty level usually requires a master's degree and clinical experience and supervision for licensure or certification.

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 1154010551, 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 39. The final step is to find the difference between that total and the next multiple of ten (40 - 39 = 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 → 0

Pos 6

Unchanged

Pos 7

Doubled → 0

Pos 8

Unchanged

Pos 9

Doubled → 10 → 1 + 0

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 0 → 0 0 → 0 5 → 10 → 1

Step 2: Add all digits plus the NPI constant

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

2 + 1 + 1 + 0 + 4 + 0 + 1 + 0 + 5 + 1 + 0 + 24 = 39

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

The next multiple of ten after 39 is 40. The difference is the calculated check digit.

40 - 39 = 1

This NPI is valid

The calculated check digit is 1, which matches the last digit of 1154010551.