OSVALDO VILLARREAL M.D.
NPI 1346446515
Pediatrics in San Antonio, TX

NPI Status: Active since June 25, 2007

Contact Information

9011 POTEET JOURDANTON FWY
SAN ANTONIO, TX
ZIP 78224
Phone: (210) 922-7000
Fax: (210) 928-4940

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

Individual
Male
Pediatrics

About OSVALDO VILLARREAL

This page provides the complete NPI Profile along with additional information for Osvaldo Villarreal, a pediatrician established in San Antonio, Texas with a medical specialization in Pediatrics. The healthcare provider is registered in the NPI registry with number 1346446515 assigned on June 2007. The practitioner's primary taxonomy code is 208000000X with license number M6445 (TX). The provider is registered as an individual and his NPI record was last updated 7 years ago.

NPI: 1346446515
Provider Name: OSVALDO VILLARREAL M.D.
Gender: Male
Entity Type: Individual
Location Address: 9011 POTEET JOURDANTON FWY SAN ANTONIO, TX 78224
Location Phone: (210) 922-7000
Location Fax: (210) 928-4940
Mailing Address: 3750 COMMERCIAL AVE SAN ANTONIO, TX 78221
Mailing Phone: (210) 922-7000
Mailing Fax: (210) 928-4940
Is Sole Proprietor?: No
Enumeration Date: 06-25-2007
Last Update Date: 03-19-2019
Code Navigator

A pediatrician like Osvaldo Villarreal is a physician who has completed a pediatric residency and is board-certified or board-eligible in a pediatric specialty. Pediatric care providers are trained to care for newborns, infants, children and adolescents. A pediatrician could perform physical exams, manage vaccinations, monitor development milestones, diagnose illnesses, infections, injuries or other health problems, etc.

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: Pediatrics
Taxonomy Code: 208000000X
Type: Allopathic & Osteopathic Physicians
License No.: M6445
License State: TX
Taxonomy Description: A pediatrician is concerned with the physical, emotional and social health of children from birth to young adulthood. Care encompasses a broad spectrum of health services ranging from preventive healthcare to the diagnosis and treatment of acute and chronic diseases. A pediatrician deals with biological, social and environmental influences on the developing child, and with the impact of disease and dysfunction on development.

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 1346446515, we treat the final digit (5) 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 65. The final step is to find the difference between that total and the next multiple of ten (70 - 65 = 5).

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 → 8

Pos 4

Unchanged

Pos 5

Doubled → 8

Pos 6

Unchanged

Pos 7

Doubled → 12 → 1 + 2

Pos 8

Unchanged

Pos 9

Doubled → 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 4 → 8 4 → 8 6 → 12 → 3 1 → 2

Step 2: Add all digits plus the NPI constant

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

2 + 3 + 8 + 6 + 8 + 4 + 1 + 2 + 5 + 2 + 24 = 65

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

The next multiple of ten after 65 is 70. The difference is the calculated check digit.

70 - 65 = 5

This NPI is valid

The calculated check digit is 5, which matches the last digit of 1346446515.