GREG ALLEN JOHNSON
NPI 1912787367
Peer Specialist in Chillicothe, OH

NPI Status: Active since October 03, 2023

Contact Information

242 E MAIN ST
CHILLICOTHE, OH
ZIP 45601
Phone: (740) 703-6075
Fax: (740) 773-3279

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

Individual
Male
Peer Specialist

About GREG JOHNSON

This page provides the complete NPI Profile along with additional information for Greg Johnson, a provider established in Chillicothe, Ohio with a medical specialization in Peer Specialist. The healthcare provider is registered in the NPI registry with number 1912787367 assigned on October 2023. The practitioner's primary taxonomy code is 175T00000X with license number APS.004226 (OH). The provider is registered as an individual and his NPI record was last updated 3 years ago.

NPI: 1912787367
Provider Name: GREG ALLEN JOHNSON
Gender: Male
Entity Type: Individual
Location Address: 242 E MAIN ST CHILLICOTHE, OH 45601
Location Phone: (740) 703-6075
Location Fax: (740) 773-3279
Mailing Address: 242 E MAIN ST CHILLICOTHE, OH 45601
Mailing Phone: (740) 773-3272
Mailing Fax: (740) 773-3279
Is Sole Proprietor?: Yes
Enumeration Date: 10-03-2023
Last Update Date: 10-03-2023
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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: Peer Specialist
Taxonomy Code: 175T00000X
Type: Other Service Providers
License No.: APS.004226
License State: OH
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.

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 1912787367, 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 → 2

Pos 4

Unchanged

Pos 5

Doubled → 14 → 1 + 4

Pos 6

Unchanged

Pos 7

Doubled → 14 → 1 + 4

Pos 8

Unchanged

Pos 9

Doubled → 12 → 1 + 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 1 → 2 7 → 14 → 5 7 → 14 → 5 6 → 12 → 3

Step 2: Add all digits plus the NPI constant

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

2 + 9 + 2 + 2 + 1 + 4 + 8 + 1 + 4 + 3 + 1 + 2 + 24 = 63

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

The next multiple of ten after 63 is 70. The difference is the calculated check digit.

70 - 63 = 7

This NPI is valid

The calculated check digit is 7, which matches the last digit of 1912787367.