TYISHA MERRITT
NPI 1770028110
Peer Specialist in Pleasant Hill, CA

NPI Status: Active since December 20, 2016

Contact Information

391 TAYLOR BLVD STE 100
PLEASANT HILL, CA
ZIP 94523
Phone: (925) 608-6550
Fax: (925) 608-6592

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

Individual
Female
Peer Specialist

About TYISHA MERRITT

This page provides the complete NPI Profile along with additional information for Tyisha Merritt, a provider established in Pleasant Hill, California with a medical specialization in Peer Specialist. The healthcare provider is registered in the NPI registry with number 1770028110 assigned on December 2016. The practitioner's primary taxonomy code is 175T00000X with license number MPSS-QXSVAO (CA). The provider is registered as an individual and her NPI record was last updated one year ago.

NPI: 1770028110
Provider Name: TYISHA MERRITT
Gender: Female
Entity Type: Individual
Location Address: 391 TAYLOR BLVD STE 100 PLEASANT HILL, CA 94523
Location Phone: (925) 608-6550
Location Fax: (925) 608-6592
Mailing Address: 1034 OAK GROVE RD CONCORD, CA 94518
Mailing Phone: (925) 681-4450
Mailing Fax: (925) 608-6592
Is Sole Proprietor?: No
Enumeration Date: 12-20-2016
Last Update Date: 07-17-2025
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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: Peer Specialist
Taxonomy Code: 175T00000X
Type: Other Service Providers
License No.: MPSS-QXSVAO
License State: CA
Taxonomy Description: Individuals certified to perform peer support services through a training process defined by a government agency, such as the Department of Veterans Affairs or a state mental health department/certification/licensing authority.

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	101YM0800X	Behavioral Health & Social Service Providers	Counselor Mental Health	(CA)
2	172V00000X	Other Service Providers	Community Health Worker
3	373H00000X	Nursing Service Related Providers	Day Training/Habilitation Specialist

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 1770028110, 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 50. The final step is to find the difference between that total and the next multiple of ten (50 - 50 = 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 → 14 → 1 + 4

Pos 4

Unchanged

Pos 5

Doubled → 0

Pos 6

Unchanged

Pos 7

Doubled → 16 → 1 + 6

Pos 8

Unchanged

Pos 9

Doubled → 2

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 7 → 14 → 5 0 → 0 8 → 16 → 7 1 → 2

Step 2: Add all digits plus the NPI constant

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

2 + 7 + 1 + 4 + 0 + 0 + 2 + 1 + 6 + 1 + 2 + 24 = 50

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

The next multiple of ten after 50 is 50. The difference is the calculated check digit.

50 - 50 = 0

This NPI is valid

The calculated check digit is 0, which matches the last digit of 1770028110.