MR. MATTHEW LONG
NPI 1457879587
Counselor - Professional in Santa Rosa, CA

NPI Status: Active since September 08, 2017

Contact Information

3371 PARKER HILL RD
SANTA ROSA, CA
ZIP 95404
Phone: (707) 535-0289

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

Individual
Male
Counselor
Professional

About MATTHEW LONG

This page provides the complete NPI Profile along with additional information for Matthew Long, a provider established in Santa Rosa, California with a medical specialization in Counselor, focusing in professional . The healthcare provider is registered in the NPI registry with number 1457879587 assigned on September 2017. The practitioner's primary taxonomy code is 101YP2500X. The provider is registered as an individual and his NPI record was last updated 2 years ago.

NPI: 1457879587
Provider Name: MR. MATTHEW LONG
Gender: Male
Entity Type: Individual
Location Address: 3371 PARKER HILL RD SANTA ROSA, CA 95404
Location Phone: (707) 535-0289
Mailing Address: 368 FELL ST SAN FRANCISCO, CA 94102
Mailing Phone: (415) 861-0828
Mailing Fax
Is Sole Proprietor?: No
Enumeration Date: 09-08-2017
Last Update Date: 04-12-2024
Code Navigator

Location Map

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 Professional
Taxonomy Code: 101YP2500X
Type: Behavioral Health & Social Service Providers

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	172V00000X	Other Service Providers	Community Health Worker

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 1457879587, 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 73. The final step is to find the difference between that total and the next multiple of ten (80 - 73 = 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 → 10 → 1 + 0

Pos 4

Unchanged

Pos 5

Doubled → 16 → 1 + 6

Pos 6

Unchanged

Pos 7

Doubled → 18 → 1 + 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 5 → 10 → 1 8 → 16 → 7 9 → 18 → 9 8 → 16 → 7

Step 2: Add all digits plus the NPI constant

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

2 + 4 + 1 + 0 + 7 + 1 + 6 + 7 + 1 + 8 + 5 + 1 + 6 + 24 = 73

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

The next multiple of ten after 73 is 80. The difference is the calculated check digit.

80 - 73 = 7

This NPI is valid

The calculated check digit is 7, which matches the last digit of 1457879587.