Expertise in
12
conditions

Dr. Oscar A. Alvarez

Gastroenterology
Texas Digestive Specialists
512 Victoria Ln Ste 2, 
Harlingen, TX 
Accepting New Patients
Expertise in
12
conditions
Texas Digestive Specialists
512 Victoria Ln Ste 2, 
Harlingen, TX 

Overview

Oscar Alvarez is a Gastroenterologist practicing medicine in Harlingen, Texas.

Dr. Alvarez is highly rated in 12 conditions, according to our data. His clinical expertise encompasses Heartburn, Gardner Syndrome, Chronic Erosive Gastritis, and Juvenile Polyposis Syndrome.

He is actively involved in clinical research, co-authoring 3 peer reviewed articles. Dr. Alvarez is currently accepting new patients.

Specialties

Gastroenterology

Licenses

Internal Medicine in TX

Hospital Affiliations

South Texas Health System
Doctors Hosptal At Renaissance

Languages Spoken

English
Spanish

Gender

Male

Insurance

Accepted insurance can change. Please verify directly with the provider.

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Accepted insurance plans:

Aetna
  • EPO
  • HMO
  • POS
  • PPO
Anthem BCBS
  • EPO
  • HMO
  • POS
  • PPO
Blue Cross Blue Shield
  • EPO
  • HMO
  • POS
  • PPO
Cigna
  • EPO
  • HMO
  • PPO
FirstCarolinaCare
  • HMO
  • MEDICARE MAPD
Friday Health

Accepted plan types not found. Please verify directly with the provider.

Health Care Services Corporation
  • HMO
  • INSURANCE PLAN
  • MANAGED MEDICAID PLAN
  • MEDICARE MAPD
  • MEDICARE PDP
  • MEDICARE SNP
  • OTHER COMMERCIAL
  • OTHER MEDICARE
  • OTHER MEDICARE PART D
  • PPO
Humana
  • HMO
  • INDEMNITY
  • POS
  • PPO
Managed Medicaid
  • OTHER MANAGED MEDICAID
Medicaid
  • OTHER MEDICAID
  • STATE MEDICAID
Superior Health Plan
  • MANAGED MEDICAID PLAN
  • MEDICARE-MEDICAID PLAN
  • OTHER COMMERCIAL
UnitedHealthcare
  • EPO
  • HMO
  • POS
  • PPO
Walgreens
  • MEDICARE DISCOUNT CARD
  • MEDICARE PDP
  • OTHER MEDICARE
Wellcare
  • EPO
  • HMO
  • INSURANCE PLAN
  • MANAGED MEDICAID PLAN
  • MEDICARE MAPD
  • MEDICARE PDP
  • MEDICARE SNP
  • MEDICARE-MEDICAID PLAN
  • OTHER MEDICARE
  • OTHER MEDICARE PART D
View 9 Less Insurance Carriers -

Locations

Texas Digestive Specialists
512 Victoria Ln Ste 2, Harlingen, TX 78550

Additional Areas of Focus

Dr. Alvarez has provided the following conditions as areas of focus. Please note that we may not have enough data to validate their experience in some of these conditions.

Non-Alcoholic Fatty Liver Disease
Nonalcoholic Steatohepatitis (NASH)

Clinical Research

Clinical research consists of overseeing clinical studies of patients undergoing new treatments and therapies, and publishing articles in peer reviewed medical journals. Providers who actively participate in clinical research are generally at the forefront of the fields and aware of the most up-to-date advances in treatments for their patients.

3 Total Publications

Dual therapy vs bismuth quadruple therapy in recurrent H. pylori: multicenter randomized trial
Dual therapy vs bismuth quadruple therapy in recurrent H. pylori: multicenter randomized trial
Journal: Revista de gastroenterologia del Peru : organo oficial de la Sociedad de Gastroenterologia del Peru
Published: July 25, 2026
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Texas Digestive Specialists

512 Victoria Ln Ste 2, 
Harlingen, TX 
 (0.1 miles away)
956-365-4400
Experience:
17+ years
Languages Spoken:
English, Spanish
See accepted insurances
Accepting New Patients

Nicole Grigg-Gutierrez is a Gastroenterologist practicing medicine in Harlingen, Texas. She has been practicing medicine for over 17 years. Dr. Grigg-Gutierrez is highly rated in 65 conditions, according to our data. Her clinical expertise encompasses Heartburn, Gardner Syndrome, Chronic Idiopathic Constipation (CIC), Endoscopy, and Gastrostomy. Dr. Grigg-Gutierrez is currently accepting new patients.

Frequently Asked Questions about Dr. Oscar A. Alvarez

Is Dr. Oscar A. Alvarez a top-rated expert for Heartburn?

MediFind is an objective health platform that identifies experts based on real-world data. Dr. Oscar A. Alvarez is classified as an Advanced expert for Heartburn, meaning they are among the top experts in the country for this condition. This ranking is based on their volume of patients, published research, and peer connections.

What conditions does Dr. Oscar A. Alvarez specialize in?

While Dr. Oscar A. Alvarez is a Gastroenterology, they have specific expertise in Heartburn, Gardner Syndrome, and Chronic Erosive Gastritis. MediFind analyzes a doctor's articles and referral patterns to identify their specific areas of focus within Gastroenterology.

Does Dr. Oscar A. Alvarez participate in research or clinical trials?

Yes. Dr. Oscar A. Alvarez has published 3 articles and abstracts on conditions like Heartburn. You can view a list of Dr. Oscar A. Alvarez's latest peer-reviewed publications and clinical trial participation on their profile to see if they are active in new treatments.

Does Dr. Oscar A. Alvarez accept my insurance?

Dr. Oscar A. Alvarez accepts most major insurance plans, including Aetna and Anthem BCBS. We recommend calling the office directly to verify that your specific plan is currently accepted before your visit.

Areas of Expertise

MediFind evaluates expertise by pulling from factors such as number of articles a doctor has published in medical journals, participation in clinical trials, speaking at industry conferences, prescribing and referral patterns, and strength of connections with other experts in their field.

Learn more about MediFind’s expert tiers

Find Dr. Alvarez's expertise for a condition
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