MR. RONALD RUFF PH.D.
NPI 1487718235
Clinical Neuropsychologist in San Francisco, CA
NPI Status: Active since December 19, 2006
Contact Information
909 HYDE ST
SUITE 620
SAN FRANCISCO, CA
ZIP 94109
Phone: (415) 771-7833
Fax: (415) 922-5849
- Individual
- Male
- Clinical Neuropsychologist
About RONALD RUFF
This page provides the complete NPI Profile along with additional information for Ronald Ruff, a provider established in San Francisco, California with a medical specialization in Clinical Neuropsychologist. The healthcare provider is registered in the NPI registry with number 1487718235 assigned on December 2006. The practitioner's primary taxonomy code is 103G00000X with license number PSY 7059 (CA). The provider is registered as an individual and his NPI record was last updated 19 years ago.
- NPI
- 1487718235
- Provider Name
- MR. RONALD RUFF PH.D.
- Gender
- Male
- Entity Type
- Individual
- Location Address
- 909 HYDE ST SUITE 620 SAN FRANCISCO, CA 94109
- Location Phone
- (415) 771-7833
- Location Fax
- (415) 922-5849
- Mailing Address
- 909 HYDE ST SUITE 620 SAN FRANCISCO, CA 94109
- Mailing Phone
- (415) 771-7833
- Mailing Fax
- (415) 922-5849
- Is Sole Proprietor?
- Yes
- Enumeration Date
- 12-19-2006
- Last Update Date
- 07-08-2007
- 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
Clinical Neuropsychologist
- Taxonomy Code
- 103G00000X
- Type
- Behavioral Health & Social Service Providers
- License No.
- PSY 7059
- License State
- CA
- Taxonomy Description
- A clinical psychologist who applies principles of assessment and intervention based upon the scientific study of human behavior as it relates to normal and abnormal functioning of the central nervous system. The specialty is dedicated to enhancing the understanding of brain-behavior relationships and the application of such knowledge to human problems.
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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 1487718235, 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 65. The final step is to find the difference between that total and the next multiple of ten (70 - 65 = 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 65 is 70. The difference is the calculated check digit.
Other Providers at the Same Location
The following 20 providers are registered at the same or a nearby location.
SAN FRANCISCO, CA 94109
SAN FRANCISCO, CA 94109
SAN FRANCISCO, CA 94109
SAN FRANCISCO, CA 94109
SAN FRANCISCO, CA 94109
SAN FRANCISCO, CA 94109
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1487718235, enumerated as an "individual" on December 19, 2006.
The provider is located at 909 HYDE ST SUITE 620 SAN FRANCISCO, CA 94109 and the phone number is (415) 771-7833.
Clinical Neuropsychologist with taxonomy code 103G00000X.
