MR. DUAN JOHNSON JR.
NPI 1215785738
Psychologist - Exercise & Sports in Portland, OR

NPI Status: Active since May 09, 2024

Contact Information

1411 SW MORRISON ST STE 310
PORTLAND, OR
ZIP 97205
Phone: (503) 352-2400

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

Individual
Male
Psychologist
Exercise & Sports

About DUAN JOHNSON

This page provides the complete NPI Profile along with additional information for Duan Johnson, a provider established in Portland, Oregon with a medical specialization in Psychologist, focusing in exercise & sports . The healthcare provider is registered in the NPI registry with number 1215785738 assigned on May 2024. The practitioner's primary taxonomy code is 103TE1100X. The provider is registered as an individual and his NPI record was last updated 2 years ago.

NPI: 1215785738
Provider Name: MR. DUAN JOHNSON JR.
Gender: Male
Entity Type: Individual
Location Address: 1411 SW MORRISON ST STE 310 PORTLAND, OR 97205
Location Phone: (503) 352-2400
Mailing Address: 1811 NW COUCH ST APT 205 PORTLAND, OR 97209
Mailing Phone: (303) 304-2532
Is Sole Proprietor?: No
Enumeration Date: 05-09-2024
Last Update Date: 05-09-2024
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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: Psychologist Exercise & Sports
Taxonomy Code: 103TE1100X
Type: Behavioral Health & Social Service Providers
Taxonomy Description: A psychologist with a proficiency in sports psychology that uses psychological knowledge and skills to address optimal performance and well-being of athletes, developmental and social aspects of sports participation, and systemic issues associated with sports settings and organizations. APA recognizes sport psychology as a proficiency acquired after a doctoral degree in one of the primary areas of psychology and licensure as a psychologist. This proficiency does not include those who have earned a doctoral degree in sport psychology but are not licensed psychologists.

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 1215785738, we treat the final digit (8) 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 62. The final step is to find the difference between that total and the next multiple of ten (70 - 62 = 8).

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 → 10 → 1 + 0

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 1 → 2 7 → 14 → 5 5 → 10 → 1 3 → 6

Step 2: Add all digits plus the NPI constant

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

2 + 2 + 2 + 5 + 1 + 4 + 8 + 1 + 0 + 7 + 6 + 24 = 62

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

The next multiple of ten after 62 is 70. The difference is the calculated check digit.

70 - 62 = 8

This NPI is valid

The calculated check digit is 8, which matches the last digit of 1215785738.