● Active Type 1 · Individual

DR. Mary Gonzales Mercado, M.D.

Internal Medicine·Houston, TX· NPI 1366540023 · Enumerated 2006 · 19 years on NPI

Gonzales Mercado is 1 of 422 internal medicine providers in Houston and 1 of 2301 in Texas.

NPI age

19 years

Enumerated 2006-09-20

Primary specialty

Internal Medicine

Plus 1 subspecialty

Licensed in

1 state

Status

Active

No deactivations on record

Last NPPES update

2026-03-30

Source: monthly bulk 2026-05

Sole proprietor

May be part of a larger org

How this provider compares

Across 2301 active internal medicine providers in Texas.

NPI age

19 years

≈ at median (19 yr)

State licenses

1 state

11% of peers hold multiple states

Subspecialties

In the 37% of peers with subspecialties

NPI lifetime · 2006 → 2026

2006-09Enumerated in NPPES

2006 2026

Where they practice

Practice location

1910 John Ralston Rd Ste 200

Houston, TX 770135531

📞 7136739000fax 8558958185

Mailing address

6101 Blue Lagoon Dr Ste 200

Miami, FL 331263168

📞 7136739000fax 8558958495

Specialties

Allopathic & Osteopathic Physicians › Internal Medicine

Internal Medicine Primary

An internist who specializes in diseases of the heart and blood vessels and manages complex cardiac conditions such as heart attacks and life-threatening, abnormal heartbeat rhythms.

TX license #J4350 taxonomy 207RC0000X
Internal Medicine

A 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,...

TX license #J4350 taxonomy 207R00000X

Identifiers

Type	Value	Notes
05 (TX)	1366540023

Practice context

Part of a multi-provider practice. 4 other active providers share this practice address in NPPES.

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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.