NPI age
17 years
Enumerated 2008-08-06
● Active
Type 1 · Individual
Alejandro De Los Santos
De Los Santos is 1 of 171 internal medicine providers in Tyler and 1 of 12343 in Texas.
Primary specialty
Internal Medicine
Plus 2 subspecialties
Licensed in
TX, PR
2 states
Status
Active
No deactivations on record
Last NPPES update
2024-07-24
Source: monthly bulk 2026-05
Sole proprietor
Yes
Solo practice on file
How this provider compares
Across 12343 active internal medicine providers in Texas.
NPI age
17 years
≈ at median (17 yr)
State licenses
2 states
Top 88% — 12% of peers are multi-state
Subspecialties
2
In the 33% of peers with subspecialties
NPI lifetime · 2008 → 2026
2008-08Enumerated in NPPES
2008
2026
Where they practice
Practice location
800 E Dawson St
Tyler, TX 757012036
Mailing address
Po Box 1169
San German, PR 006831169
Additional practice locations
1 secondary location on file with NPPES.
Location 2
917 Ave Tito Castro
Ponce, PR 007164717
Specialties
-
Internal Medicine PrimaryA 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,...
-
General PracticeA physician who specializes in the general practice of diagnosing, treating, and managing patients with a variety of illnesses and conditions.
-
HospitalistHospitalists are physicians whose primary professional focus is the general medical care of hospitalized patients. Their activities include patient care, teaching, research, and leadership related to Hospital Medicine. The term...
Identifiers
| Type | Value | Notes |
|---|---|---|
| 01 (TX) | P01105290 | MEDICARE RAIL ROAD |
Multi-state credentialing: Licensed in 2 states. Useful context for credentialers building cross-state provider networks.
Practice context
Part of a multi-provider practice. 321 other active providers share this practice address in NPPES.
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- Confirm the NPI on NPPES.The CMS registry is the system of record. Open NPPES →
- Check the state license is currently active.State licensing boards publish current status; NPPES does not.
- Confirm payer enrollment if billing.NPI presence does not guarantee active enrollment with Medicare, Medicaid, or commercial payers.