MELISSA CALDERON
NPI 1588412399
Rehabilitation Practitioner in San Jose, CA

NPI Status: Active since May 07, 2024

Contact Information

1340 TULLY RD STE 304
SAN JOSE, CA
ZIP 95122
Phone: (408) 271-3900

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

Individual
Female
Rehabilitation Practitioner

About MELISSA CALDERON

This page provides the complete NPI Profile along with additional information for Melissa Calderon, a provider established in San Jose, California with a medical specialization in Rehabilitation Practitioner. The healthcare provider is registered in the NPI registry with number 1588412399 assigned on May 2024. The practitioner's primary taxonomy code is 225400000X. The provider is registered as an individual and her NPI record was last updated one year ago.

NPI: 1588412399
Provider Name: MELISSA CALDERON
Gender: Female
Entity Type: Individual
Location Address: 1340 TULLY RD STE 304 SAN JOSE, CA 95122
Location Phone: (408) 271-3900
Mailing Address: 1340 TULLY RD STE 304 SAN JOSE, CA 95122
Mailing Phone: (408) 271-3900
Is Sole Proprietor?: No
Enumeration Date: 05-07-2024
Last Update Date: 10-20-2025
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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: Rehabilitation Practitioner
Taxonomy Code: 225400000X
Type: Respiratory, Developmental, Rehabilitative and Restorative Service Providers
License State: CA
Taxonomy Description: A health care practitioner who trains or retrains individuals disabled by disease or injury to help them attain their maximum functional capacity.

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 1588412399, 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 → 8

Pos 6

Unchanged

Pos 7

Doubled → 4

Pos 8

Unchanged

Pos 9

Doubled → 18 → 1 + 8

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 4 → 8 2 → 4 9 → 18 → 9

Step 2: Add all digits plus the NPI constant

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

2 + 5 + 1 + 6 + 8 + 8 + 1 + 4 + 3 + 1 + 8 + 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 1588412399.