NPI age
8 years
Enumerated 2018-05-02
● Active
Type 1 · Individual
Martin Alejandro Chacon Portillo, MD
Chacon Portillo is 1 of 394 hospitalist providers in Houston and 1 of 1835 in Texas.
Primary specialty
Hospitalist
Plus 3 subspecialties
Licensed in
TX, AZ
2 states
Status
Active
No deactivations on record
Last NPPES update
2025-01-06
Source: monthly bulk 2026-05
Sole proprietor
Yes
Solo practice on file
How this provider compares
Across 1835 active hospitalist providers in Texas.
NPI age
8 years
↓ 4 yr below median (12 yr)
State licenses
2 states
Top 74% — 25% of peers are multi-state
Subspecialties
2
In the 78% of peers with subspecialties
NPI lifetime · 2018 → 2026
2018-05Enumerated in NPPES
2018
2026
Where they practice
Practice location
6411 Fannin St
Houston, TX 770301501
Mailing address
6410 Fannin St Ste 600
Houston, TX 770305206
Additional practice locations
1 secondary location on file with NPPES.
Location 2
6410 Fannin St Ste 600
Houston, TX 770305206
Specialties
-
Hospitalist PrimaryHospitalists 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...
-
Internal MedicineA 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,...
-
Student in an Organized Health Care Education/Training ProgramAn individual who is enrolled in an organized health care education/training program leading to a degree, certification, registration, and/or licensure to provide health care.
Identifiers
| Type | Value | Notes |
|---|---|---|
| 01 (AZ) | R76710 | MD/RESIDENT/TEMP LICENSE |
Multi-state credentialing: Licensed in 2 states. Useful context for credentialers building cross-state provider networks.
Practice context
Part of a multi-provider practice. 810 other active providers share this practice address in NPPES.
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Request a quote →How to verify this provider
- 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.