DR. RICHARD M YARVIS M.D.
NPI 1295865129
Psychiatry & Neurology - Forensic Psychiatry in Fairfield, CA

NPI Status: Active since March 07, 2007

Contact Information

4160 SUISUN VALLEY RD
E322
FAIRFIELD, CA
ZIP 94534
Phone: (707) 864-5696

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  • Individual
  • Male
  • Psychiatry & Neurology
  • Forensic Psychiatry

About RICHARD YARVIS

This page provides the complete NPI Profile along with additional information for Richard Yarvis, a provider established in Fairfield, California with a medical specialization in Psychiatry & Neurology, focusing in forensic psychiatry . The healthcare provider is registered in the NPI registry with number 1295865129 assigned on March 2007. The practitioner's primary taxonomy code is 2084F0202X with license number G16456 (CA). The provider is registered as an individual and his NPI record was last updated 19 years ago.

NPI
1295865129
Provider Name
DR. RICHARD M YARVIS M.D.
Gender
Male
Entity Type
Individual
Location Address
4160 SUISUN VALLEY RD E322 FAIRFIELD, CA 94534
Location Phone
(707) 864-5696
Mailing Address
4160 SUISUN VALLEY RD E322 FAIRFIELD, CA 94534
Mailing Phone
(707) 864-5696
Is Sole Proprietor?
Yes
Enumeration Date
03-07-2007
Last Update Date
07-08-2007
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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

Psychiatry & Neurology Forensic Psychiatry

Taxonomy Code
2084F0202X
Type
Allopathic & Osteopathic Physicians
License No.
G16456
License State
CA
Taxonomy Description
Forensic Psychiatry is a subspecialty with psychiatric focus on interrelationships with civil, criminal and administrative law, evaluation and specialized treatment of individuals involved with the legal system, incarcerated in jails, prisons, and forensic psychiatry hospitals.

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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 1295865129, we treat the final digit (9) 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 61. The final step is to find the difference between that total and the next multiple of ten (70 - 61 = 9).

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
9
Doubled → 18 → 1 + 8
Pos 4
5
Unchanged
Pos 5
8
Doubled → 16 → 1 + 6
Pos 6
6
Unchanged
Pos 7
5
Doubled → 10 → 1 + 0
Pos 8
1
Unchanged
Pos 9
2
Doubled → 4
Check
9
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 9 → 18 → 9 8 → 16 → 7 5 → 10 → 1 2 → 4

Step 2: Add all digits plus the NPI constant

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

2 + 2 + 1 + 8 + 5 + 1 + 6 + 6 + 1 + 0 + 1 + 4 + 24 = 61

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

The next multiple of ten after 61 is 70. The difference is the calculated check digit.

70 - 61 = 9
This NPI is valid
The calculated check digit is 9, which matches the last digit of 1295865129.

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1295865129, enumerated as an "individual" on March 07, 2007.

The provider is located at 4160 SUISUN VALLEY RD E322 FAIRFIELD, CA 94534 and the phone number is (707) 864-5696.

Psychiatry & Neurology with taxonomy code 2084F0202X and a focus in Forensic Psychiatry.