Carla Santos Ortiz, MD
Carla Santos Ortiz, MD is an Internal Medicine Physician in San Antonio, TX, registered under NPI 1003503830. This provider registers 2 separate taxonomy codes, which usually means they practise across more than one recognised specialty.
Getting there
Here is what surrounds this office in San Antonio, based on OpenStreetMap data collected Oct 1, 2026. Parking is available about 0.34 mi away. The nearest transit stop is 0.31 mi away. If you arrive early, there is a coffee shop 0.38 mi away.
Getting here and what is nearby
Restaurant John the Greek Restaurant 206 ft ~1 min
16602 North US Highway 281, San Antonio 78232
Mo-Fr 11:00-20:00; Sa 11:00-21:00
Parking 667 ft ~3 min
Restaurant Freddy's 812 ft ~4 min
Restaurant Chester's Hamburger 0.24 mi ~5 min
Hotel Quality Inn & Suites 0.28 mi ~6 min
Transit 0.31 mi ~7 min
Parking 0.34 mi ~7 min
Parking 0.34 mi ~7 min
Coffee Starbucks 0.38 mi ~8 min
16101 San Pedro Avenue, San Antonio 78232
Su-Th 05:30-19:00
Distances are straight‑line estimates — walking routes may be longer. Hours and phone numbers can change; call ahead to confirm.
Credentials and Medicare
| Licence | State | Specialty |
|---|---|---|
| W8092 | TX | Internal Medicine Physician primary |
This provider holds licence W8092 issued in TX. A licence number in NPPES reflects what was filed at registration — it does not confirm the licence is still active today.
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 Internal Medicine covers
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs. NUCC Health Care Provider Taxonomy, code 207R00000X
All registered taxonomy codes
This provider registers 2 taxonomy codes. The primary code is what appears on most claims; the others record additional recognised specialties.
| Code | Specialty | Licence | State | |
|---|---|---|---|---|
| 207R00000X | Internal Medicine Physician | W8092 | TX | primary |
| 390200000X | Student in an Organized Health Care Education/Training Program | — | — |
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-1 identifies a single person. It stays with the clinician for life, even if they move practice or change state, which is why the address on file can lag behind where they actually work today.
| NPI | 1003503830 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Apr 21, 2023 |
| Last updated | Aug 5, 2026 |
| Status | Active |
| Sole proprietor | No |
| Gender | Female |
| Credential | MD |
| Practice address |
16620 SAN PEDRO AVE STE 300 San Antonio, TX 78232 (210) 871-4701 Fax (210) 688-4596 |
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 | 5 | 0 | 3 | 8 | 3 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 1 | 0 | 6 | 8 | 6 |
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.