GERARDO GARCIA SANTIAGO MD
NPI 1902749435
Student in an Organized Health Care Education/Training Program in San Angelo, TX

NPI Status: Active since April 10, 2026

Contact Information

120 E HARRIS AVE
SAN ANGELO, TX
ZIP 76903
Phone: (325) 747-4820

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  • Individual
  • Male
  • Student in an Organized Health Care Educ...

About GERARDO GARCIA SANTIAGO

This page provides the complete NPI Profile along with additional information for Gerardo Garcia Santiago, a primary care provider established in San Angelo, Texas with a medical specialization in Student In An Organized Health Care Education/training Program. The healthcare provider is registered in the NPI registry with number 1902749435 assigned on April 2026. The practitioner's primary taxonomy code is 390200000X. The provider is registered as an individual and his NPI record was last updated April 2026.

NPI
1902749435
Provider Name
GERARDO GARCIA SANTIAGO MD
Gender
Male
Entity Type
Individual
Location Address
120 E HARRIS AVE SAN ANGELO, TX 76903
Location Phone
(325) 747-4820
Mailing Address
4110 WELLINGTON ST APT 710 SAN ANGELO, TX 76904
Mailing Phone
(325) 277-6227
Is Sole Proprietor?
No
Enumeration Date
04-10-2026
Last Update Date
04-10-2026
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A primary care provider (PCP) like Gerardo Garcia Santiago sees people with common medical problems. The primary care provider might be a doctor, physician assistant, nurse practitioner or clinic that are usually involved in your long-term care. A PCP might provide preventive care, treat common medical conditions, identify urgent medical problems and refer you to specialists when necessary. Primary care is usually provided in an outpatient facility but if you are admitted to a hospital your PCP may assist in your care. The most common medical conditions seen by primary care providers are: hypertension, upper respiratory tract infections, depression or anxiety, back pain, arthritis, dermatitis, diabetes, urinary tract infections, 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

Student in an Organized Health Care Education/Training Program

Taxonomy Code
390200000X
Type
Student, Health Care
Taxonomy Description
An individual who is enrolled in an organized health care education/training program leading to a degree, certification, registration, and/or licensure to provide health care.

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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 1902749435, 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
1
Doubled → 2
Pos 2
9
Unchanged
Pos 3
0
Doubled → 0
Pos 4
2
Unchanged
Pos 5
7
Doubled → 14 → 1 + 4
Pos 6
4
Unchanged
Pos 7
9
Doubled → 18 → 1 + 8
Pos 8
4
Unchanged
Pos 9
3
Doubled → 6
Check
5
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 0 → 0 7 → 14 → 5 9 → 18 → 9 3 → 6

Step 2: Add all digits plus the NPI constant

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

2 + 9 + 0 + 2 + 1 + 4 + 4 + 1 + 8 + 4 + 6 + 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 1902749435.

Other Providers at the Same Location


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

Pharmacist
120 E HARRIS AVE
SAN ANGELO, TX 76903
Internal Medicine
120 E HARRIS AVE
SAN ANGELO, TX 76903
Pharmacist
120 E HARRIS AVE
SAN ANGELO, TX 76903
Emergency Medicine (Emergency Medical Services)
120 E HARRIS AVE, EMERGENCY ROOM
SAN ANGELO, TX 76903
Pharmacist
120 E HARRIS AVE
SAN ANGELO, TX 76903
Emergency Medicine
120 E HARRIS AVE
SAN ANGELO, TX 76903
Long Term Care Hospital
120 E HARRIS AVE, 6TH FLOOR
SAN ANGELO, TX 76903
Internal Medicine
120 E HARRIS AVE
SAN ANGELO, TX 76903
Emergency Medicine
120 E HARRIS AVE
SAN ANGELO, TX 76903
Emergency Medicine
120 E HARRIS AVE
SAN ANGELO, TX 76903
Emergency Medicine
120 E HARRIS AVE
SAN ANGELO, TX 76903
Emergency Medicine
120 E HARRIS AVE
SAN ANGELO, TX 76903
Emergency Medicine
120 E HARRIS AVE
SAN ANGELO, TX 76903
Rehabilitation Unit
120 E HARRIS AVE
SAN ANGELO, TX 76903
Clinic/Center (Ambulatory Surgical)
120 E HARRIS AVE
SAN ANGELO, TX 76903
Psychiatric Hospital
120 E HARRIS AVE
SAN ANGELO, TX 76903
Chronic Disease Hospital (Children)
120 E HARRIS AVE
SAN ANGELO, TX 76903
Internal Medicine
120 E HARRIS AVE
SAN ANGELO, TX 76903
Emergency Medicine
120 E HARRIS AVE
SAN ANGELO, TX 76903
Internal Medicine
120 E HARRIS AVE
SAN ANGELO, TX 76903

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1902749435, enumerated as an "individual" on April 10, 2026.

The provider is located at 120 E HARRIS AVE SAN ANGELO, TX 76903 and the phone number is (325) 747-4820.

Student in an Organized Health Care Education/Training Program with taxonomy code 390200000X.