MS. DESIREE NADINE MCCOY ADJUNCT STAFF
NPI 1942641337
Peer Specialist in Fairfield, CA

NPI Status: Active since July 12, 2013

Contact Information

2101 COURAGE DR
FAIRFIELD, CA
ZIP 94533
Phone: (707) 784-2128
Fax: (707) 427-2981

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

Individual
Female
Peer Specialist

About DESIREE MCCOY

This page provides the complete NPI Profile along with additional information for Desiree Mccoy, a provider established in Fairfield, California with a medical specialization in Peer Specialist. The healthcare provider is registered in the NPI registry with number 1942641337 assigned on July 2013. The practitioner's primary taxonomy code is 175T00000X with license number MPSS-ODSGKZ (CA). The provider is registered as an individual and her NPI record was last updated March 2026.

NPI: 1942641337
Provider Name: MS. DESIREE NADINE MCCOY ADJUNCT STAFF
Gender: Female
Entity Type: Individual
Location Address: 2101 COURAGE DR FAIRFIELD, CA 94533
Location Phone: (707) 784-2128
Location Fax: (707) 427-2981
Mailing Address: 275 BECK AVE FAIRFIELD, CA 94533
Mailing Phone: (707) 784-8066
Is Sole Proprietor?: Yes
Enumeration Date: 07-12-2013
Last Update Date: 03-31-2026
Code Navigator

Location Map

Secondary Locations

1211 Embarcadero SUITE 300
Oakland, CA 94606
(510) 535-1409

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-ODSGKZ
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	101Y00000X	Behavioral Health & Social Service Providers	Counselor	(CA)
2	251S00000X	Agencies	Community/Behavioral Health
3	390200000X	Student, Health Care	Student in an Organized Health Care Education/Training Program	(CA)

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 1942641337, we treat the final digit (7) 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 63. The final step is to find the difference between that total and the next multiple of ten (70 - 63 = 7).

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 → 8

Pos 4

Unchanged

Pos 5

Doubled → 12 → 1 + 2

Pos 6

Unchanged

Pos 7

Doubled → 2

Pos 8

Unchanged

Pos 9

Doubled → 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 4 → 8 6 → 12 → 3 1 → 2 3 → 6