ROBERT MARTINEZ CNS
NPI 1689523631
Clinical Nurse Specialist in La Mesa, CA

NPI Status: Active since January 23, 2026

Contact Information

5555 GROSSMONT CENTER DR
LA MESA, CA
ZIP 91942
Phone: (619) 740-6502

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

Individual
Male
Clinical Nurse Specialist

About ROBERT MARTINEZ

This page provides the complete NPI Profile along with additional information for Robert Martinez, a provider established in La Mesa, California with a medical specialization in Clinical Nurse Specialist. The healthcare provider is registered in the NPI registry with number 1689523631 assigned on January 2026. The practitioner's primary taxonomy code is 364S00000X with license number 4931 (CA). The provider is registered as an individual and his NPI record was last updated January 2026.

NPI: 1689523631
Provider Name: ROBERT MARTINEZ CNS
Gender: Male
Entity Type: Individual
Location Address: 5555 GROSSMONT CENTER DR LA MESA, CA 91942
Location Phone: (619) 740-6502
Mailing Address: 2819 HIDDEN VALLEY CT SPRING VALLEY, CA 91977
Is Sole Proprietor?: Yes
Enumeration Date: 01-23-2026
Last Update Date: 01-23-2026
Code Navigator

A Clinical Nurse Specialist (CNS) like Robert Martinez is a type of advanced practice registered nurse (APRN) that provides direct patient care in various nursing specialties, including pediatrics or psychiatric-mental health. CNSs collaborate with other nurses and medical professionals to improve patient care quality. CNSs are often positioned in leadership roles where they may provide education and mentorship to other nursing personnel. Additionally, CNSs may also conduct research and advocate for certain healthcare policies.

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 Nurse Specialist
Taxonomy Code: 364S00000X
Type: Physician Assistants & Advanced Practice Nursing Providers
License No.: 4931
License State: CA
Taxonomy Description: A registered nurse who, through a graduate degree program in nursing, or through a formal post-basic education program or continuing education courses and clinical experience, is expert in a specialty area of nursing practice within one or more of the components of direct patient/client care, consultation, education, research and administration.

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 1689523631, we treat the final digit (1) 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 69. The final step is to find the difference between that total and the next multiple of ten (70 - 69 = 1).

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 → 6

Pos 8

Unchanged

Pos 9

Doubled → 6

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 3 → 6 3 → 6

Step 2: Add all digits plus the NPI constant

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

2 + 6 + 1 + 6 + 9 + 1 + 0 + 2 + 6 + 6 + 6 + 24 = 69

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

The next multiple of ten after 69 is 70. The difference is the calculated check digit.

70 - 69 = 1

This NPI is valid

The calculated check digit is 1, which matches the last digit of 1689523631.