DR. ROBERT JOSEPH DE SANTIS MD
NPI 1053282517
Psychiatry & Neurology - Neurology in Palo Alto, CA
NPI Status: Active since September 16, 2025
Contact Information
453 QUARRY RD BLDG R220
PALO ALTO, CA
ZIP 94304
Phone: (650) 723-6469
- Individual
- Male
- Psychiatry & Neurology
- Neurology
About ROBERT DE SANTIS
This page provides the complete NPI Profile along with additional information for Robert De Santis, a provider established in Palo Alto, California with a medical specialization in Psychiatry & Neurology, focusing in neurology . The healthcare provider is registered in the NPI registry with number 1053282517 assigned on September 2025. The practitioner's primary taxonomy code is 2084N0400X with license number A204218 (CA). The provider is registered as an individual and his NPI record was last updated one year ago. The organization operates as a Single Specialty Group with one or more individual practitioners, all of who practice with the same area of specialization.
- NPI
- 1053282517
- Provider Name
- DR. ROBERT JOSEPH DE SANTIS MD
- Gender
- Male
- Entity Type
- Individual
- Location Address
- 453 QUARRY RD BLDG R220 PALO ALTO, CA 94304
- Location Phone
- (650) 723-6469
- Mailing Address
- 453 QUARRY RD BLDG R220 PALO ALTO, CA 94304
- Mailing Phone
- (650) 723-6469
- Is Sole Proprietor?
- Yes
- Enumeration Date
- 09-16-2025
- Last Update Date
- 09-16-2025
- 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
Psychiatry & Neurology Neurology
- Taxonomy Code
- 2084N0400X
- Type
- Allopathic & Osteopathic Physicians
- License No.
- A204218
- License State
- CA
- Taxonomy Description
- A Neurologist specializes in the diagnosis and treatment of diseases or impaired function of the brain, spinal cord, peripheral nerves, muscles, autonomic nervous system, and blood vessels that relate to these structures.
Group Taxonomy 193400000X SINGLE SPECIALTY GROUP
This provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.
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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 1053282517, we treat the final digit (7) 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 53. The final step is to find the difference between that total and the next multiple of ten (60 - 53 = 7).
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 53 is 60. The difference is the calculated check digit.
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1053282517, enumerated as an "individual" on September 16, 2025.
The provider is located at 453 QUARRY RD BLDG R220 PALO ALTO, CA 94304 and the phone number is (650) 723-6469.
Psychiatry & Neurology with taxonomy code 2084N0400X and a focus in Neurology.
