Oscar A. Alvarez, MD
Gastroenterology Physician · Harlingen, TX
Oscar A. Alvarez, MD is a gastroenterology physician with a practice address in Harlingen, Texas, and NPI 1376565838, issued on Jul 24, 2006. Check the license (Texas J5967, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.
- Name
- Oscar A. Alvarez
- Credential
- MD
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License number
- J5967 TX
Self-reported in NPPES; status is on the state search - Practice location
- 512 Victoria LN Ste 2, Harlingen, TX 78550
- Phone
- (956) 365-4400
- Enumerated
- Jul 24, 2006
- Record last updated
- Jul 14, 2022
- Fax
- (956) 365-4111
- Medicaid ID
- 083176001 TX
- Medicare enrollment
- Enrolled (PECOS I20101028001519); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 1,478 in Texas → Look up another NPI →
Also registered at 512 Victoria LN Ste 2
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Ana Aguayo, PAMedical Physician Assistant1952980690
- Lisa Briones, PAMedical Physician Assistant1477296960
- Alyssa Dawson, CRNACertified Registered Nurse Anesthetist1154803039
- Miriam De Leon, PA-CMedical Physician Assistant1396206983
- Tania Garcia, NPFamily Nurse Practitioner1265547251
- Nicole Grigg Gutierrez, MDGastroenterology Physician1750516035
Verify Oscar A. Alvarez in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTexas Medical Board
Search for license J5967Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
69% fewer Medicare Part D claims than the average gastroenterology physician in 2024
251 Medicare Part D claims for 134 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D. Brand-name drugs were 21% of claims.
Most prescribed
- Omeprazole74 claims
- Pantoprazole Sodium32 claims
- Peg-3350 And Electrolytes31 claims
- Famotidine18 claims
- Gavilyte-G13 claims
- Linzess13 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The practice group's MIPS final score for 2023 (Medicare payment program): 53.4 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Gastroenterology Consultants OF South Texas, PLLCHarlingen, TX
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Oscar A. Alvarez among 1,478 gastroenterology physician records in Texas
Oscar A. Alvarez, MD is one of 1,478 gastroenterology physician records with a practice address in Texas. 89% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 14% of them.
- NPI issued2006 · 14% of these records are older, 51% newer
- In a Medicare fileYes · 89% of these records are
- In the CMS Doctors and Clinicians fileYes · 79% of these records are
- Graduated1983 · median 2003 among the 1,175 with a school on file
- Record last updated2022 · 53% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RG0100X and a Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Gastroenterology Physician providers in Texas
There are 1,478 gastroenterology physician records in Texas.
All 1,478 in Texas → Every provider in Harlingen → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- Wayne Green, M.D.Harlingen, TX 785501114906278
- Nicole Grigg Gutierrez, MDHarlingen, TX 785501750516035
- Oral James, M.D.Harlingen, TX 785501235178799
- Owen Maat, MDHarlingen, TX 785501295780609
- Nghia Nguyen, DOHarlingen, TX 785501538725890
- Nolan Perez, MDHarlingen, TX 785501184726986
- Jason Phillips, M.D.Harlingen, TX 785501760442685
- Sandeep Samuel, MDHarlingen, TX 785501174822647
Common questions
What is Oscar A. Alvarez, MD's NPI number?
Oscar A. Alvarez, MD's National Provider Identifier (NPI) is 1376565838, issued on Jul 24, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Oscar A. Alvarez, MD located?
The NPPES record lists a practice address at 512 Victoria LN Ste 2, Harlingen, TX, 78550. Phone: (956) 365-4400. Providers update this record themselves, so call before visiting.
How can I verify Oscar A. Alvarez, MD's license?
NPPES lists Texas license number J5967, as entered by the provider. Search the Texas Medical Board at https://profile.tmb.state.tx.us/Search.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Oscar A. Alvarez, MD prescribe under Medicare Part D?
In 2024, Oscar A. Alvarez, MD had 251 Medicare Part D claims for 134 beneficiaries; the average among gastroenterology physician prescribers was 811. Part D covers Medicare prescriptions only.
What is Oscar A. Alvarez, MD's MIPS final score?
The 2023 MIPS final score is 53.4 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.