NPI age
7 years
Enumerated 2018-06-05
● Active
Type 1 · Individual
John Levasseur, DO
Levasseur is 1 of 10 internal medicine providers in Fort Sam Houston and 1 of 479 in Texas.
Primary specialty
Internal Medicine
Plus 3 subspecialties
Licensed in
TX, OH, ME
3 states
Status
Active
No deactivations on record
Last NPPES update
2026-04-28
Source: monthly bulk 2026-05
Sole proprietor
Yes
Solo practice on file
How this provider compares
Across 479 active internal medicine providers in Texas.
NPI age
7 years
↓ 9 yr below median (16 yr)
State licenses
3 states
Top 67% — 32% of peers are multi-state
Subspecialties
2
In the 79% of peers with subspecialties
NPI lifetime · 2018 → 2026
2018-06Enumerated in NPPES
2018
2026
Where they practice
Practice location
3551 Roger Brooke Dr
Fort Sam Houston, TX 782344504
Mailing address
9500 Euclid Ave # Jj24
Cleveland, OH 441950001
Additional practice locations
2 secondary locations on file with NPPES.
Location 2
4502 Medical Dr
San Antonio, TX 782294492
Location 3
9500 Euclid Ave # Jj24
Cleveland, OH 441950001
Specialties
-
Internal Medicine PrimaryAn internist who diagnoses, treats and supports patients with multiple organ dysfunction. This specialist may have administrative responsibilities for intensive care units and may also facilitate and coordinate patient care among the...
-
AnesthesiologyAn anesthesiologist, who specializes in critical care medicine diagnoses, treats and supports patients with multiple organ dysfunction. This specialist may have administrative responsibilities for intensive care units and may also...
-
Internal MedicineAn internist who treats diseases of the lungs and airways. The pulmonologist diagnoses and treats cancer, pneumonia, pleurisy, asthma, occupational and environmental diseases, bronchitis, sleep disorders, emphysema and other complex...
Practice context
Part of a multi-provider practice. 1394 other active providers share this practice address in NPPES.
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