NPI age
10 years
Enumerated 2016-04-01
● Active
Type 1 · Individual
DR. Janitzio Jiovanni Guzman, MD
Guzman is 1 of 198 internal medicine providers in Houston and 1 of 920 in Texas.
Primary specialty
Internal Medicine
Plus 2 subspecialties
Licensed in
TX, DC
2 states
Status
Active
No deactivations on record
Last NPPES update
2025-07-14
Source: monthly bulk 2026-05
Sole proprietor
No
May be part of a larger org
How this provider compares
Across 920 active internal medicine providers in Texas.
NPI age
10 years
↓ 7 yr below median (17 yr)
State licenses
2 states
Top 83% — 16% of peers are multi-state
Subspecialties
1
In the 35% of peers with subspecialties
NPI lifetime · 2016 → 2026
2016-04Enumerated in NPPES
2016
2026
Where they practice
Practice location
3601 N MacGregor Way
Houston, TX 770048004
Mailing address
10 Center Dr Rm 11n206
Bethesda, MD 208920004
Additional practice locations
3 secondary locations on file with NPPES.
Location 2
1504 Taub Loop
Houston, TX 770301608
Location 3
5215 Loughboro Rd Nw
Washington, DC 200162618
Location 4
2525a Holly Hall St
Houston, TX 770544124
Specialties
-
Internal Medicine PrimaryAn internist who deals with infectious diseases of all types and in all organ systems. Conditions requiring selective use of antibiotics call for this special skill. This physician often diagnoses and treats AIDS patients and patients...
-
PediatricsA pediatrician trained to care for children in the diagnosis, treatment and prevention of infectious diseases. This specialist can apply specific knowledge to affect a better outcome for pediatric infections with complicated courses,...
Practice context
Part of a multi-provider practice. 46 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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