RILEY ROBERT STAMMERJOHAN
NPI 1053289231
Counselor - Mental Health in Auburn, CA

NPI Status: Active since October 28, 2025

Contact Information

11080 B AVE
AUBURN, CA
ZIP 95603
Phone: (530) 886-3470

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  • Individual
  • Male
  • Counselor
  • Mental Health

About RILEY STAMMERJOHAN

This page provides the complete NPI Profile along with additional information for Riley Stammerjohan, a provider established in Auburn, California with a medical specialization in Counselor, focusing in mental health . The healthcare provider is registered in the NPI registry with number 1053289231 assigned on October 2025. The practitioner's primary taxonomy code is 101YM0800X. The provider is registered as an individual and his NPI record was last updated one year ago.

NPI
1053289231
Provider Name
RILEY ROBERT STAMMERJOHAN
Gender
Male
Entity Type
Individual
Location Address
11080 B AVE AUBURN, CA 95603
Location Phone
(530) 886-3470
Mailing Address
11080 B AVE AUBURN, CA 95603
Is Sole Proprietor?
No
Enumeration Date
10-28-2025
Last Update Date
10-28-2025
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A mental health counselor like Riley Stammerjohan provides treatment to individuals, families, couples, and groups for mental and emotional health issues and relationship problems. Mental health counselors treat clients with a variety of conditions, including anxiety, depression, grief, low self-esteem, stress, and suicidal impulses.

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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

Counselor Mental Health

Taxonomy Code
101YM0800X
Type
Behavioral Health & Social Service Providers

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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 1053289231, we treat the final digit (1) 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 59. The final step is to find the difference between that total and the next multiple of ten (60 - 59 = 1).

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
1
Doubled → 2
Pos 2
0
Unchanged
Pos 3
5
Doubled → 10 → 1 + 0
Pos 4
3
Unchanged
Pos 5
2
Doubled → 4
Pos 6
8
Unchanged
Pos 7
9
Doubled → 18 → 1 + 8
Pos 8
2
Unchanged
Pos 9
3
Doubled → 6
Check
1
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 2 → 4 9 → 18 → 9 3 → 6

Step 2: Add all digits plus the NPI constant

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

2 + 0 + 1 + 0 + 3 + 4 + 8 + 1 + 8 + 2 + 6 + 24 = 59

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

The next multiple of ten after 59 is 60. The difference is the calculated check digit.

60 - 59 = 1
This NPI is valid
The calculated check digit is 1, which matches the last digit of 1053289231.

Other Providers at the Same Location


The following 7 providers are registered at the same or a nearby location.

Community Based Residential Treatment Facility, Mental Illness
11080 B AVE
AUBURN, CA 95603
Counselor (Mental Health)
11080 B AVE
AUBURN, CA 95603
Counselor (Mental Health)
11080 B AVE
AUBURN, CA 95603
Counselor (Mental Health)
11080 B AVE
AUBURN, CA 95603
Counselor (Mental Health)
11080 B AVE
AUBURN, CA 95603
Day Training/Habilitation Specialist
11080 B AVE
AUBURN, CA 95603
Behavior Technician
11080 B AVE
AUBURN, CA 95603

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1053289231, enumerated as an "individual" on October 28, 2025.

The provider is located at 11080 B AVE AUBURN, CA 95603 and the phone number is (530) 886-3470.

Counselor with taxonomy code 101YM0800X and a focus in Mental Health.