Dr. Gregory Leigh Johnson, MD

Dr. Johnson practices at Magella Medical Associates in Austin, Texas.

Dr. Johnson's NPI, 1437107331, was assigned on May 4, 2006. Dr. Johnson graduated from Creighton University School of Medicine - Omaha in 1989. Dr. Johnson holds Texas license K0846.

Dr. Johnson's primary practice is Magella Medical Associates, at 4314 Medical Pkwy, Austin, TX 78756 in Travis County. The practice phone is (512) 341-1000.

Dr. Johnson's primary practice is Magella Medical Associates in Austin, Texas. Dr. Johnson is also affiliated with Dell Children's Medical Center. The medical group on file is Magella Medical Associates. Dmand AI also links Dr. Johnson to 2 more group practices and clinics and 1 medical group, each named with a free account.

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Johnson practices, 3 sites in all. Vendor and product names are available with a free account.

Pediatric cardiology is Dr. Johnson's primary specialty in the NPI Registry, under taxonomy code 2080P0202X. Dr. Johnson is board certified in adult congenital heart disease by the American Board of Internal Medicine. Dr. Johnson is licensed in Texas.

Dmand AI lists intellectual and developmental disabilities among the conditions Dr. Johnson treats.

CMS data shows 70 Medicare services from Dr. Johnson across 4 procedure codes in 2024, for 18 Medicare patients. Medicare paid $3,351 for them. Every service was in an office.

CMS counts 18 Medicare patients who saw Dr. Johnson in 2024. Their average risk score is 1.11, where 1.00 is the Medicare average.

Across all payers, Dmand AI patient panel data puts Dr. Johnson's median patient age at 30, with 50% women.

In 2024, Dr. Johnson wrote 231 Medicare Part D claims for 29 patients. 90% of them were for generic drugs. CMS names the drug for 154 of them, across 7 drugs with 11 or more claims each, at $126,112 in total drug cost. In 2023, CMS named 202 claims across 9 drugs.

Dr. Johnson accepts Medicare assignment, so Medicare's approved amount is taken as full payment.

Dmand AI links 7 papers to Dr. Johnson, published from 2019 to 2024. 2022 was the busiest year, with 2. The most frequent topics are Heart Defects, Congenital and Texas. Dr. Johnson has published most often in Cardiol Young. Dr. Johnson's most frequent co-authors are Charles D. Fraser, MD, Carlos Miguel Mery, MD, MPH and Andrew Well.

CMS Open Payments shows 31 general payments to Dr. Johnson from 10 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 79% of the total. Medtronic, Inc. paid the most, $1,673.

Dr. Johnson graduated from Creighton University School of Medicine - Omaha in 1989.

Dr. Johnson is in network with 21 carriers, including Elevance, Aetna and Blue Cross Blue Shield of Michigan. HMO plans come from the most carriers, 11. Check the plan with the practice before a visit.