MENDEZ HORIZON
MENDEZ HORIZON is an organization registered with the National Plan and Provider Enumeration System (NPPES) under NPI 1003254020, based in San Antonio, TX. It is classified under Clinical Medical Laboratory.
Getting there
Here is what surrounds this office in San Antonio, based on OpenStreetMap data collected Sep 14, 2026. Parking is available about 0.29 mi away. The nearest transit stop is 0.29 mi away. If you arrive early, there is a coffee shop 0.45 mi away.
Getting here and what is nearby
Transit 335 ft ~2 min
Hotel Star Inn 346 ft ~2 min
Restaurant Wingstop 418 ft ~2 min
Transit 450 ft ~2 min
Convenience Timewise 481 ft ~2 min
Gas station Shell 514 ft ~2 min
Parking 819 ft ~4 min
Restaurant Olive Garden 0.24 mi ~5 min
6155 Northwest Loop 410, San Antonio 78238
Parking 0.25 mi ~5 min
Restaurant Outback Steakhouse 0.27 mi ~6 min
6569 Ingram Road, San Antonio 78238
Transit 0.29 mi ~6 min
Parking 0.29 mi ~6 min
Coffee Starbucks 0.45 mi ~10 min
Hotel Holiday Inn Express & Suites San Antonio West - SeaWorld 0.46 mi ~10 min
Hotel Residence Inn by Marriott San Antonio SeaWorld/Lackland 0.49 mi ~10 min
Distances are straight‑line estimates — walking routes may be longer. Hours and phone numbers can change; call ahead to confirm.
Credentials and Medicare
NPPES does not list a state licence number for this record. That is not unusual — organizations and some provider types are not required to file one. Verify current licensure with the relevant state board before care.
This NPI does not appear in the PECOS Medicare enrolment file. Providers who do not bill Medicare — or who bill only through a group's enrolment — will not appear here. It is not a sign of any problem with the registration.
What Clinical Medical Laboratory covers
(1) A clinical laboratory is a facility for the biological, microbiological, serological, chemical, immunohematological, hematological, biophysical, cytological, pathological, or other examination of materials derived from the human body for the purpose of providing information for the diagnosis, prevention, or treatment of any disease or impairment of, human beings. These examinations also include procedures to determine, measure, or otherwise describe the presence or absence of various substances or organisms in the body. Facilities only collecting or preparing specimens (or both) or only serving as a mailing service and not performing testing are not considered clinical laboratories. (2) Any facility that examines materials from the human body for purposes of providing information for the diagnosis, prevention, or treatment of any disease or impairment of, or the assessment of, the health of human beings. Typical divisions of a clinical laboratory include hematology, cytology, bacteriology, histology, biochemistry, medical toxicology, and serology. NUCC Health Care Provider Taxonomy, code 291U00000X
The taxonomy records how the provider classifies their own practice. It does not confirm which conditions they currently treat, whether they are accepting new patients, or which insurance they take — call the office for that.
Full NPPES record
An NPI-2 identifies an organization — a clinic, hospital, group practice, laboratory, or supplier. Individual clinicians working there hold their own NPI-1 numbers separately, so a bill may reference both.
| NPI | 1003254020 valid check digit |
|---|---|
| Entity type | Organization (NPI-2) |
| Enumeration date | Jun 12, 2013 |
| Last updated | Jun 20, 2018 |
| Status | Active |
| Practice address |
6420 NW LOOP 410 SUITE 102 San Antonio, TX 78238 (210) 520-5800 |
| Other names |
Dba Fas-tes West San Antonio Former Legal Name |
| Other identifiers |
=========
· Other (TX) |
Number check
How the check works, step by step
Every NPI carries a Luhn check digit — the same scheme used on credit cards. CMS prefixes the number with 80840 before computing it, which marks it as a US health identifier.
| Digit | 8 | 0 | 8 | 4 | 0 | 1 | 0 | 0 | 3 | 2 | 5 | 4 | 0 | 2 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 4 | 5 | 8 | 0 | 4 |
Sum = 50 · next multiple of 10 = 50 · check digit = 0 · actual last digit = 0
A valid check digit only means the number is well-formed. It does not mean the provider is licensed, active, or in good standing — those are separate questions answered by the sections above.