NPI age
20 years
Enumerated 2005-11-08
● Active
Type 1 · Individual
DR. Naili Alexander Chen, D.O., MPH, MASC
Chen is 1 of 48 internal medicine providers in Fort Sam Houston and 1 of 12343 in Texas.
Primary specialty
Internal Medicine
Plus 6 subspecialties
Licensed in
CA, PA
2 states
Status
Active
No deactivations on record
Last NPPES update
2023-03-07
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
20 years
↑ 3 yr above median (17 yr)
State licenses
2 states
Top 88% — 12% of peers are multi-state
Subspecialties
4
In the 33% of peers with subspecialties
NPI lifetime · 2005 → 2026
2005-11Enumerated in NPPES
2005
2026
Where they practice
Practice location
3551 Roger Brooke Dr
Fort Sam Houston, TX 782344504
Mailing address
3551 Roger Brooke Dr
Fort Sam Houston, TX 782344504
Additional practice locations
2 secondary locations on file with NPPES.
Location 2
318 W Lemon Ave
Arcadia, CA 910078033
Location 3
1100 Wilford Hall Loop Bldg 4554
Jbsa Lackland, TX 782365638
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,...
-
Emergency MedicineAn emergency medicine physician who specializes in non-hospital based emergency medical services (e.g., disaster site, accident scene, transport vehicle, etc.) to provide pre-hospital assessment, treatment, and transport patients.
-
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...
-
Preventive MedicineAerospace medicine focuses on the clinical care, research, and operational support of the health, safety, and performance of crewmembers and passengers of air and space vehicles, together with the support personnel who assist operation...
-
Preventive MedicineA preventive medicine physician who specializes in preventive medicine/occupational-environmental medicine, which is focused on protecting the population from occupational and environmental conditions.
Identifiers
| Type | Value | Notes |
|---|---|---|
| 01 (CA) | 20A7408 | BLUE CROSS OF CALIFORNIA |
Multi-state credentialing: Licensed in 2 states. Useful context for credentialers building cross-state provider networks.
Practice context
Part of a multi-provider practice. 1394 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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