GERARDO ANTONIO ALVARADO RDN
NPI 1194603761
Dietitian, Registered - Nutrition, Gerontological in Huntington Park, CA

NPI Status: Active since August 22, 2025

Contact Information

1900 E SLAUSON AVE STE B
HUNTINGTON PARK, CA
ZIP 90255
Phone: (323) 277-7678

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

Individual
Male
Dietitian, Registered
Nutrition, Gerontological

About GERARDO ALVARADO

This page provides the complete NPI Profile along with additional information for Gerardo Alvarado, a provider established in Huntington Park, California with a medical specialization in Dietitian, Registered, focusing in nutrition, gerontological . The healthcare provider is registered in the NPI registry with number 1194603761 assigned on August 2025. The practitioner's primary taxonomy code is 133VN1101X. The provider is registered as an individual and his NPI record was last updated one year ago.

NPI: 1194603761
Provider Name: GERARDO ANTONIO ALVARADO RDN
Gender: Male
Entity Type: Individual
Location Address: 1900 E SLAUSON AVE STE B HUNTINGTON PARK, CA 90255
Location Phone: (323) 277-7678
Mailing Address: 2764 SOUTHERN AVE APT A SOUTH GATE, CA 90280
Mailing Phone: (323) 610-4574
Is Sole Proprietor?: No
Enumeration Date: 08-22-2025
Last Update Date: 08-22-2025
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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: Dietitian, Registered Nutrition, Gerontological
Taxonomy Code: 133VN1101X
Type: Dietary & Nutritional Service Providers
Taxonomy Description: An individual who is a Specialist in Gerontological Nutrition and provides nutrition care to promote quality of life and optimal health for older adults across the continuum of care, including: acute care, post-acute care, primary care, long-term care, assisted living, home care, palliative care, community-based nutrition, food service, correctional facilities, and government programs. RDN who works indirectly with gerontological nutrition through roles in management, industry, education, and research.

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 1194603761, 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 59. The final step is to find the difference between that total and the next multiple of ten (60 - 59 = 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 → 18 → 1 + 8

Pos 4

Unchanged

Pos 5

Doubled → 12 → 1 + 2

Pos 6

Unchanged

Pos 7

Doubled → 6

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 9 → 18 → 9 6 → 12 → 3 3 → 6 6 → 12 → 3

Step 2: Add all digits plus the NPI constant

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

2 + 1 + 1 + 8 + 4 + 1 + 2 + 0 + 6 + 7 + 1 + 2 + 24 = 59

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

The next multiple of ten after 59 is 60. The difference is the calculated check digit.

60 - 59 = 1

This NPI is valid

The calculated check digit is 1, which matches the last digit of 1194603761.