RYAN GAVIN DUNNIGAN
NPI 1285941898
Psychologist - Forensic in San Rafael, CA

NPI Status: Active since September 02, 2010

Contact Information

3270 KERNER BLVD STE A
SAN RAFAEL, CA
ZIP 94901
Phone: (415) 473-2681
Fax: (415) 473-5850

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  • Individual
  • Male
  • Psychologist
  • Forensic

About RYAN DUNNIGAN

This page provides the complete NPI Profile along with additional information for Ryan Dunnigan, a provider established in San Rafael, California with a medical specialization in Psychologist, focusing in forensic . The healthcare provider is registered in the NPI registry with number 1285941898 assigned on September 2010. The practitioner's primary taxonomy code is 103TF0200X with license number PSY27458 (CA). The provider is registered as an individual and his NPI record was last updated 11 years ago.

NPI
1285941898
Provider Name
RYAN GAVIN DUNNIGAN
Other Name
DR. RYAN G DUNNIGAN PSYD, MA, MBA
Other Name Type
Professional Name (2)
Gender
Male
Entity Type
Individual
Location Address
3270 KERNER BLVD STE A SAN RAFAEL, CA 94901
Location Phone
(415) 473-2681
Location Fax
(415) 473-5850
Mailing Address
183 KNOLLWOOD DR SAN RAFAEL, CA 94901
Mailing Phone
(415) 720-2663
Is Sole Proprietor?
No
Enumeration Date
09-02-2010
Last Update Date
09-03-2015
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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

Psychologist Forensic

Taxonomy Code
103TF0200X
Type
Behavioral Health & Social Service Providers
License No.
PSY27458
License State
CA
Taxonomy Description
A psychologist whose specialty is characterized by activities primarily intended to provide professional psychological expertise within the judicial and legal systems.

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)
1390200000XStudent, Health Care

Student in an Organized Health Care Education/Training Program

 

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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 1285941898, 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 72. The final step is to find the difference between that total and the next multiple of ten (80 - 72 = 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
1
Doubled → 2
Pos 2
2
Unchanged
Pos 3
8
Doubled → 16 → 1 + 6
Pos 4
5
Unchanged
Pos 5
9
Doubled → 18 → 1 + 8
Pos 6
4
Unchanged
Pos 7
1
Doubled → 2
Pos 8
8
Unchanged
Pos 9
9
Doubled → 18 → 1 + 8
Check
8
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 8 → 16 → 7 9 → 18 → 9 1 → 2 9 → 18 → 9

Step 2: Add all digits plus the NPI constant

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

2 + 2 + 1 + 6 + 5 + 1 + 8 + 4 + 2 + 8 + 1 + 8 + 24 = 72

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

The next multiple of ten after 72 is 80. The difference is the calculated check digit.

80 - 72 = 8
This NPI is valid
The calculated check digit is 8, which matches the last digit of 1285941898.

Other Providers at the Same Location


The following 10 providers are registered at the same or a nearby location.

Counselor (Mental Health)
3270 KERNER BLVD STE A, SAN RAFAEL, CA 94901
SAN RAFAEL, CA 94901
Counselor
3270 KERNER BLVD STE A
SAN RAFAEL, CA 94901
Marriage & Family Therapist
3270 KERNER BLVD STE A
SAN RAFAEL, CA 94901
Counselor (Mental Health)
3270 KERNER BLVD STE A
SAN RAFAEL, CA 94901
Rehabilitation Practitioner
3270 KERNER BLVD STE A
SAN RAFAEL, CA 94901
Counselor
3270 KERNER BLVD STE A
SAN RAFAEL, CA 94901
Occupational Therapist (Gerontology)
3270 KERNER BLVD STE A
SAN RAFAEL, CA 94901
Marriage & Family Therapist
3270 KERNER BLVD STE A
SAN RAFAEL, CA 94901
Community/Behavioral Health
3270 KERNER BLVD STE A
SAN RAFAEL, CA 94901
Marriage & Family Therapist
3270 KERNER BLVD STE A
SAN RAFAEL, CA 94901

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1285941898, enumerated as an "individual" on September 02, 2010.

The provider is located at 3270 KERNER BLVD STE A SAN RAFAEL, CA 94901 and the phone number is (415) 473-2681.

Psychologist with taxonomy code 103TF0200X and a focus in Forensic.