ISSAC J CORTINAS
NPI 1881574879
Dental Assistant in San Francisco, CA

NPI Status: Active since September 03, 2025

Contact Information

730 POLK ST FL 4
SAN FRANCISCO, CA
ZIP 94109
Phone: (415) 292-3400

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

Individual
Male
Dental Assistant

About ISSAC CORTINAS

This page provides the complete NPI Profile along with additional information for Issac Cortinas, a provider established in San Francisco, California with a medical specialization in Dental Assistant. The healthcare provider is registered in the NPI registry with number 1881574879 assigned on September 2025. The practitioner's primary taxonomy code is 126800000X with license number RDA97469 (CA). The provider is registered as an individual and his NPI record was last updated one year ago.

NPI: 1881574879
Provider Name: ISSAC J CORTINAS
Gender: Male
Entity Type: Individual
Location Address: 730 POLK ST FL 4 SAN FRANCISCO, CA 94109
Location Phone: (415) 292-3400
Mailing Address: 106 N 31ST ST SAN JOSE, CA 95116
Is Sole Proprietor?: No
Enumeration Date: 09-03-2025
Last Update Date: 09-03-2025
Code Navigator

A dental assitant like Issac Cortinas works closely with patients and dentists by providing patient care, taking x rays, keeping patient records, scheduling appointments, sterilizing dental equipment, etc. During a typical visit a dental assistant might take a patient's medical history, blood pressure and pulse, explain what procedure will be done and talk to patients about oral care. .

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: Dental Assistant
Taxonomy Code: 126800000X
Type: Dental Providers
License No.: RDA97469
License State: CA
Taxonomy Description: An individual who may or may not have completed an accredited dental assisting education program and who aids the dentist in providing patient care services and performs other nonclinical duties in the dental office or other patient care facility. The scope of the patient care functions that may be legally delegated to the dental assistant varies based on the needs of the dentist the educational preparation of the dental assistant and state dental practice acts and regulations. Patient care services are provided under the supervision of a dentist. To avoid misleading the public, no occupational title other than dental assistant should be used to describe this dental auxiliary.

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 1881574879, 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 71. The final step is to find the difference between that total and the next multiple of ten (80 - 71 = 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

Doubled → 2

Pos 2

Unchanged

Pos 3

Doubled → 16 → 1 + 6

Pos 4

Unchanged

Pos 5

Doubled → 10 → 1 + 0

Pos 6

Unchanged

Pos 7

Doubled → 8

Pos 8

Unchanged

Pos 9

Doubled → 14 → 1 + 4

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 8 → 16 → 7 5 → 10 → 1 4 → 8 7 → 14 → 5

Step 2: Add all digits plus the NPI constant

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

2 + 8 + 1 + 6 + 1 + 1 + 0 + 7 + 8 + 8 + 1 + 4 + 24 = 71

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

The next multiple of ten after 71 is 80. The difference is the calculated check digit.

80 - 71 = 9

This NPI is valid

The calculated check digit is 9, which matches the last digit of 1881574879.