NICHOLAS ANTON DI IANNI BENSON PA-C
NPI 1366391963
Physician Assistant - Surgical in Concord, CA

NPI Status: Active since January 26, 2026

Contact Information

1800 SUTTER ST STE 100
CONCORD, CA
ZIP 94520
Phone: (925) 939-8585

NPI Profile Information
Primary Taxonomy
NPI Validation
Other Providers Same Location
Frequently Asked Questions

Individual
Male
Physician Assistant
Surgical

About NICHOLAS BENSON

This page provides the complete NPI Profile along with additional information for Nicholas Benson, a provider established in Concord, California with a medical specialization in Physician Assistant, focusing in surgical . The healthcare provider is registered in the NPI registry with number 1366391963 assigned on January 2026. The practitioner's primary taxonomy code is 363AS0400X. The provider is registered as an individual and his NPI record was last updated February 2026.

NPI: 1366391963
Provider Name: NICHOLAS ANTON DI IANNI BENSON PA-C
Gender: Male
Entity Type: Individual
Location Address: 1800 SUTTER ST STE 100 CONCORD, CA 94520
Location Phone: (925) 939-8585
Mailing Address: PO BOX 31396 WALNUT CREEK, CA 94598
Mailing Phone: (925) 939-8585
Mailing Fax
Is Sole Proprietor?: Yes
Enumeration Date: 01-26-2026
Last Update Date: 02-27-2026
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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: Physician Assistant Surgical
Taxonomy Code: 363AS0400X
Type: Physician Assistants & Advanced Practice Nursing Providers

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 1366391963, we treat the final digit (3) 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 67. The final step is to find the difference between that total and the next multiple of ten (70 - 67 = 3).

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

Doubled → 2

Pos 2

Unchanged

Pos 3

Doubled → 12 → 1 + 2

Pos 4

Unchanged

Pos 5

Doubled → 6

Pos 6

Unchanged

Pos 7

Doubled → 2

Pos 8

Unchanged

Pos 9

Doubled → 12 → 1 + 2

Check

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 6 → 12 → 3 3 → 6 1 → 2 6 → 12 → 3

Step 2: Add all digits plus the NPI constant

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

2 + 3 + 1 + 2 + 6 + 6 + 9 + 2 + 9 + 1 + 2 + 24 = 67

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

The next multiple of ten after 67 is 70. The difference is the calculated check digit.

70 - 67 = 3

This NPI is valid

The calculated check digit is 3, which matches the last digit of 1366391963.