Dr. Oscar Alejandro Olavarria, MD

Dr. Olavarria practices at Memorial Hermann Greater Heights Hospital in Houston, Texas, part of Memorial Hermann Health System.

Dr. Olavarria's NPI, 1972957942, was assigned on April 15, 2016. Dr. Olavarria graduated from Central University of Venezuela in 2013. Dr. Olavarria's Texas license number on file is R9411.

Dr. Olavarria's primary practice is Memorial Hermann Greater Heights Hospital, at 1635 North Loop West, Houston, TX 77008 in Harris County. The practice phone is (713) 448-6796.

Dr. Olavarria's primary practice is Memorial Hermann Greater Heights Hospital in Houston, Texas, part of Memorial Hermann Health System. Dr. Olavarria is also affiliated with Memorial Hermann-Texas Medical Center. The medical group on file is UT Physicians. Dmand AI also links Dr. Olavarria to 2 more group practices and clinics and 2 medical groups, each named with a free account.

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Olavarria practices, 4 sites in all. Vendor and product names are available with a free account.

Surgery is Dr. Olavarria's primary specialty in the NPI Registry, under taxonomy code 208600000X. Dr. Olavarria is board certified in surgery by the American Board of Surgery. Dr. Olavarria has a license on file in Texas.

Dmand AI lists acute sinusitis and swimmer's ear among the conditions Dr. Olavarria treats.

CMS counts 31 Medicare patients who saw Dr. Olavarria in 2024. The largest group is 65 to 74, with 15 patients. 75% of them have high blood pressure, and 75% have high cholesterol. Their average risk score is 1.05, where 1.00 is the Medicare average.

Across all payers, Dmand AI patient panel data puts Dr. Olavarria's median patient age at 58, with 57% women.

In 2024, Dr. Olavarria wrote 37 Medicare Part D claims for 20 patients. 95% of them were for generic drugs.

CMS publishes a Merit-based Incentive Payment System (MIPS) score of 84 out of 100 for Dr. Olavarria for performance year 2024, reported as part of a group. Dr. Olavarria accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Olavarria as offering telehealth. CMS counts 21 procedures of upper gastrointestinal (gi) endoscopy for acid reflux by Dr. Olavarria, more than 51% of the clinicians it reports for that procedure.

Colonoscopy: 1 to 10 procedures (CMS shows small counts as a range)

Hernia repair (minimally invasive): 1 to 10 procedures (CMS shows small counts as a range)

Hernia repair - groin (open): 1 to 10 procedures (CMS shows small counts as a range)

Removal of tissue: 1 to 10 procedures (CMS shows small counts as a range)

Dmand AI links 55 papers to Dr. Olavarria, published from 2017 to 2025. 2020 was the busiest year, with 14. The most frequent topics are Hernia, Ventral, Herniorrhaphy and Laparoscopy. Dr. Olavarria has published most often in Ann Surg. Dr. Olavarria's most frequent co-authors are Mike K. Liang, MD, Julie Lynn Holihan, MD and Naila Dhanani.

CMS Open Payments shows 87 general payments to Dr. Olavarria from 17 drug and device companies from 2018 to 2025. Consulting fees make up the largest share, 63% of the total. Ethicon Inc. paid the most, $25,673.

Dr. Olavarria graduated from Central University of Venezuela in 2013.

Dr. Olavarria is in network with 22 carriers, including Aetna, Blue Cross Blue Shield of Michigan and Highmark. PPO plans come from the most carriers, 15. Check the plan with the practice before a visit.