DR. PETER W B MADSEN PH.D.
NPI 1982896825
Psychologist - Forensic in Elk Grove, CA
NPI Status: Active since August 14, 2007
Contact Information
8220 LONGLEAF DR STE 200
ELK GROVE, CA
ZIP 95758
Phone: (916) 602-9919
- Individual
- Male
- Psychologist
- Forensic
About PETER MADSEN
This page provides the complete NPI Profile along with additional information for Peter Madsen, a provider established in Elk Grove, California with a medical specialization in Psychologist, focusing in forensic . The healthcare provider is registered in the NPI registry with number 1982896825 assigned on August 2007. The practitioner's primary taxonomy code is 103TF0200X with license number 29853 (CA). The provider is registered as an individual and his NPI record was last updated 3 years ago.
- NPI
- 1982896825
- Provider Name
- DR. PETER W B MADSEN PH.D.
- Gender
- Male
- Entity Type
- Individual
- Location Address
- 8220 LONGLEAF DR STE 200 ELK GROVE, CA 95758
- Location Phone
- (916) 602-9919
- Mailing Address
- PO BOX 11439 OAKLAND, CA 94611
- Is Sole Proprietor?
- No
- Enumeration Date
- 08-14-2007
- Last Update Date
- 12-05-2023
- Code Navigator
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.
- 29853
- 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.
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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 1982896825, we treat the final digit (5) 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 75. The final step is to find the difference between that total and the next multiple of ten (80 - 75 = 5).
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.
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.
Step 2: Add all digits plus the NPI constant
Add the transformed values, the unchanged digits, and the constant 24.
Step 3: Find the amount needed to reach the next multiple of 10
The next multiple of ten after 75 is 80. The difference is the calculated check digit.
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1982896825, enumerated as an "individual" on August 14, 2007.
The provider is located at 8220 LONGLEAF DR STE 200 ELK GROVE, CA 95758 and the phone number is (916) 602-9919.
Psychologist with taxonomy code 103TF0200X and a focus in Forensic.
