Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Oscar A Alvarez, MD

Individual provider Gastroenterology Physician · NPI 1376565838

Oscar A Alvarez, MD is a Gastroenterology in Harlingen, Texas. Qualified in 1983, 43 years ago. Practices with Gastroenterology Consultants of South Texas, PLLC, a 44-clinician group and accepts Medicare assignment. Licensed in Texas.

Years since qualifying
43
Licensed in
TX
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

512 Victoria Ln Ste 2
Harlingen, TX 78550-3227
Phone: (956) 365-4400
Fax: (956) 365-4111
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Gastroenterology Physician (primary) Taxonomy 207RG0100X · Licence J5967 (TX)

Record details

NPI number1376565838
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJuly 24, 2006
Last updated in NPPESJuly 14, 2022
Certification dateJuly 14, 2022
Mailing address512 Victoria Ln Ste 2, Harlingen, TX 78550-3227

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyGASTROENTEROLOGY
Also practisesINTERNAL MEDICINE
Medical schoolOTHER
Graduated 1983 (43 years in practice)
Group practice Gastroenterology Consultants Of South Texas, Pllc — 44 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

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