Dr. Mariana Chavez Mac Gregor, MD, MS

Dr. Chavez Mac Gregor practices at The University of Texas MD Anderson Cancer Center in Houston, Texas, part of The University of Texas System.

Dr. Chavez Mac Gregor's NPI, 1740408624, was assigned on April 23, 2007. Dr. Chavez Mac Gregor graduated from Universidad Nacional Autonoma de Mexico in 2003. Dr. Chavez Mac Gregor holds Texas license P2211.

Dr. Chavez Mac Gregor's primary practice is The University of Texas MD Anderson Cancer Center, at 1515 Holcombe Blvd, Houston, TX 77030.

Dr. Chavez Mac Gregor's primary practice is The University of Texas MD Anderson Cancer Center in Houston, Texas, part of The University of Texas System. The medical group on file is Physicians Referral Service.

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Chavez Mac Gregor practices. Vendor and product names are available with a free account.

Internal medicine is Dr. Chavez Mac Gregor's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Chavez Mac Gregor is board certified in medical oncology by the American Board of Internal Medicine. Dmand AI has Dr. Chavez Mac Gregor's licenses on file in 10 states: Texas, Missouri, Arizona, Georgia, Louisiana, Oklahoma, Tennessee, Washington, Alabama and Mississippi.

Dmand AI lists breast cancer among the conditions Dr. Chavez Mac Gregor treats.

CMS data shows 133 Medicare services from Dr. Chavez Mac Gregor across 3 procedure codes in 2024, all of them office visits, for 66 Medicare patients. Medicare paid $13,048 for them. Every service was in a facility, such as a hospital, rather than an office.

CMS counts 66 Medicare patients who saw Dr. Chavez Mac Gregor in 2024. The largest group is 65 to 74, with 36 patients. 75% of them have cancer, and 68% have high cholesterol. Their average risk score is 2.17, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.

Across all payers, Dmand AI patient panel data puts Dr. Chavez Mac Gregor's median patient age at 67, with 99% women.

In 2024, Dr. Chavez Mac Gregor wrote 88 Medicare Part D claims for 21 patients. 52% of them were for generic drugs. CMS names the drug for 39 of them, across 3 drugs with 11 or more claims each, at $545,313 in total drug cost. In 2023, CMS named 34 claims across 3 drugs.

CMS publishes a Merit-based Incentive Payment System (MIPS) score of 84 out of 100 for Dr. Chavez Mac Gregor for performance year 2024, reported as part of a group. Dr. Chavez Mac Gregor accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Chavez Mac Gregor as offering telehealth.

Dmand AI links 1 paper to Dr. Chavez Mac Gregor in 2022. Dr. Chavez Mac Gregor's most frequent co-authors are Sharon M. Giordano, MD, MPH, Anthony Lucci, MD and Anthony P. Lucci, MD.

CMS Open Payments shows 161 general payments to Dr. Chavez Mac Gregor from 11 drug and device companies from 2017 to 2025. Consulting fees make up the largest share, 71% of the total. AstraZeneca Pharmaceuticals LP paid the most, $59,779. It also lists 11 research payments totaling $16,771 from 2016 to 2025.

Dr. Chavez Mac Gregor graduated from Universidad Nacional Autonoma de Mexico in 2003.

Dr. Chavez Mac Gregor is in network with 3 carriers, including Aetna, Blue Cross Blue Shield of Michigan and CMS Medicare. HMO plans come from the most carriers, 2. Check the plan with the practice before a visit.