CARDIAC ARRHYTHMIA ASSOCIATES
NPI 1043584840
Clinic/Center - Medical Specialty in La Jolla, CA

NPI Status: Active since February 27, 2012

Contact Information

9850 GENESEE AVE
SUITE 940
LA JOLLA, CA
ZIP 92037
Phone: (858) 658-0088
Fax: (858) 658-0084

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  • Organization
  • Clinic/Center
  • Medical Specialty

About CARDIAC ARRHYTHMIA ASSOCIATES

This page provides the complete NPI Profile along with additional information for Cardiac Arrhythmia Associates, a provider established in La Jolla, California operating as a Clinic/center, focusing in medical specialty . The healthcare provider is registered in the NPI registry with number 1043584840 assigned on February 2012. The practitioner's primary taxonomy code is 261QM2500X with license number G53772 (CA). The provider is registered as an organization and their NPI record was last updated March 2026. The authorized official of this NPI record is Dr. George Stuart Mendenhall Md (Ceo)

NPI
1043584840
Provider Name
CARDIAC ARRHYTHMIA ASSOCIATES
Entity Type
Organization
Location Address
9850 GENESEE AVE SUITE 940 LA JOLLA, CA 92037
Location Phone
(858) 658-0088
Location Fax
(858) 658-0084
Mailing Address
9850 GENESEE AVE STE 940 LA JOLLA, CA 92037
Mailing Phone
(858) 658-0088
Mailing Fax
(858) 658-0084
Is Sole Proprietor?
No
Is Organization Subpart?
No
Enumeration Date
02-27-2012
Last Update Date
03-25-2026
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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

Clinic/Center Medical Specialty

Taxonomy Code
261QM2500X
Type
Ambulatory Health Care Facilities
License No.
G53772
License State
CA
Taxonomy Description
An entity, facility, or distinct part of a facility providing diagnostic, treatment, and prescriptive services related to a specific area of medical specialization. Frequently used for Title V related Children's Specialty services or to meet specific public health needs (e.g., infectious diseases or breast and cervical cancer).

Authorized Official

The authorized official is the designated individual with the legal authority to make changes to the provider’s official NPI record. For organizations, the authorized official must be a general partner, chairman of the board, CEO, CFO or a direct owner holding at least a 5 percent stake in the medical organization.

Authorized Official Name

DR. GEORGE STUART MENDENHALL MD

Authorized Official Title
CEO
Authorized Official Phone
(858) 658-0088

Reviews for CARDIAC ARRHYTHMIA ASSOCIATES

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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 1043584840, we treat the final digit (0) 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 70. The final step is to find the difference between that total and the next multiple of ten (70 - 70 = 0).

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
1
Doubled → 2
Pos 2
0
Unchanged
Pos 3
4
Doubled → 8
Pos 4
3
Unchanged
Pos 5
5
Doubled → 10 → 1 + 0
Pos 6
8
Unchanged
Pos 7
4
Doubled → 8
Pos 8
8
Unchanged
Pos 9
4
Doubled → 8
Check
0
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 4 → 8 5 → 10 → 1 4 → 8 4 → 8

Step 2: Add all digits plus the NPI constant

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

2 + 0 + 8 + 3 + 1 + 0 + 8 + 8 + 8 + 8 + 24 = 70

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

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

70 - 70 = 0
This NPI is valid
The calculated check digit is 0, which matches the last digit of 1043584840.

Other Providers at the Same Location


The following 20 providers are registered at the same or a nearby location.

Internal Medicine (Gastroenterology)
9850 GENESEE AVE, STE 930
LA JOLLA, CA 92037
Thoracic Surgery (Cardiothoracic Vascular Surgery)
9850 GENESEE AVE, STE 560
LA JOLLA, CA 92037
Thoracic Surgery (Cardiothoracic Vascular Surgery)
9850 GENESEE AVE, STE 560
LA JOLLA, CA 92037
Thoracic Surgery (Cardiothoracic Vascular Surgery)
9850 GENESEE AVE, STE 560
LA JOLLA, CA 92037
Registered Nurse
9850 GENESEE AVE, STE 560
LA JOLLA, CA 92037
Thoracic Surgery (Cardiothoracic Vascular Surgery)
9850 GENESEE AVE, STE 560
LA JOLLA, CA 92037
Nurse Practitioner (Family)
9850 GENESEE AVE, SUITE 335
LA JOLLA, CA 92037
Internal Medicine (Endocrinology, Diabetes & Metabolism)
9850 GENESEE AVE, SUITE 415
LA JOLLA, CA 92037
Physician Assistant
9850 GENESEE AVE, SUITE 415
LA JOLLA, CA 92037
Dermatology
9850 GENESEE AVE, 530
LA JOLLA, CA 92037
Internal Medicine
9850 GENESEE AVE, SUITE 355
LA JOLLA, CA 92037
Internal Medicine (Gastroenterology)
9850 GENESEE AVE, SUITE 820
LA JOLLA, CA 92037
Internal Medicine
9850 GENESEE AVE, SUITE 355
LA JOLLA, CA 92037
Internal Medicine
9850 GENESEE AVE, SUITE 355
LA JOLLA, CA 92037
Internal Medicine
9850 GENESEE AVE, SUITE 900
LA JOLLA, CA 92037
Obstetrics & Gynecology (Reproductive Endocrinology)
9850 GENESEE AVE, SUITE 410
LA JOLLA, CA 92037
Specialist
9850 GENESEE AVE, SUITE 320
LA JOLLA, CA 92037
Clinical Nurse Specialist (Psychiatric/Mental Health)
9850 GENESEE AVE, SUITE 970
LA JOLLA, CA 92037
Marriage & Family Therapist
9850 GENESEE AVE, SUITE 970
LA JOLLA, CA 92037
Psychiatry & Neurology (Psychiatry)
9850 GENESEE AVE, STE 970
LA JOLLA, CA 92037

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1043584840, enumerated as an "organization" on February 27, 2012.

The provider is located at 9850 GENESEE AVE SUITE 940 LA JOLLA, CA 92037 and the phone number is (858) 658-0088.

Clinic/Center with taxonomy code 261QM2500X and a focus in Medical Specialty.