NPI age
17 years
Enumerated 2009-03-17
● Active
Type 1 · Individual
Billy A De Los Santos, MD
De Los Santos is 1 of 8 internal medicine providers in Sunnyvale and 1 of 12343 in Texas.
Primary specialty
Internal Medicine
Plus 1 subspecialty
Licensed in
TX, NY
2 states
Status
Active
No deactivations on record
Last NPPES update
2021-06-09
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
0
33% of peers hold subspecialties
NPI lifetime · 2009 → 2026
2009-03Enumerated in NPPES
2009
2026
Where they practice
Practice location
341 Wheatfield Dr Ste 100
Sunnyvale, TX 751824639
Mailing address
341 Wheatfield Dr Ste 100
Sunnyvale, TX 751824639
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,...
Practice context
Part of a multi-provider practice. 7 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 →
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