NPI age
19 years
Enumerated 2006-09-01
● Active
Type 1 · Individual
DR. Ivette Yolanda Mercado, MD
Mercado is 1 of 80 internal medicine providers in Harlingen and 1 of 12343 in Texas.
Primary specialty
Internal Medicine
Licensed in
TX
1 state
Status
Active
No deactivations on record
Last NPPES update
2014-02-20
Source: monthly bulk 2026-05
Sole proprietor
No
May be part of a larger org
How this provider compares
Across 12343 active internal medicine providers in Texas.
NPI age
19 years
↑ 2 yr above median (17 yr)
State licenses
1 state
12% of peers hold multiple states
Subspecialties
0
33% of peers hold subspecialties
NPI lifetime · 2006 → 2026
2006-09Enumerated in NPPES
2006
2026
Where they practice
Practice location
597 W Sesame Dr Ste D
Harlingen, TX 785508770
Mailing address
14549 Ewing Dr
Harlingen, TX 785522232
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,...
Identifiers
| Type | Value | Notes |
|---|---|---|
| 05 (TX) | 178986901 |
Practice context
Solo or small practice. No 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 →
- 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.