NPI age
17 years
Enumerated 2009-01-26
● Active
Type 1 · Individual
Nicolas A. Melgarejo, M.D.
Melgarejo is 1 of 63 internal medicine providers in San Antonio and 1 of 920 in Texas.
Primary specialty
Internal Medicine
Plus 1 subspecialty
Licensed in
TX
1 state
Status
Active
No deactivations on record
Last NPPES update
2011-06-28
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
17 years
≈ at median (17 yr)
State licenses
1 state
16% of peers hold multiple states
Subspecialties
1
In the 35% of peers with subspecialties
NPI lifetime · 2009 → 2026
2009-01Enumerated in NPPES
2009
2026
Where they practice
Practice location
343 W. Houston St., Suite #808
San Antonio, TX 78205
Mailing address
8042 Wurzbach Rd., #280
San Antonio, TX 782293863
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...
-
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,...
Identifiers
| Type | Value | Notes |
|---|---|---|
| 01 | B117780 | MEDICARE ID# |
| 05 (TX) | 219315301 |
Practice context
Solo or small practice. No other active providers share this practice address in NPPES.
Recently enumerated nearby: 1 new internal medicine provider has been added in San Antonio in the last 180 days.
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- 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.