Dr. Alixandra Lee Riddering, MD

Dr. Riddering practices at VA St Louis Health Care System in Saint Louis, Missouri.

Dr. Riddering's NPI, 1801356076, was assigned on March 22, 2019. Dr. Riddering graduated from University of Michigan Medical School in 2019. Dr. Riddering holds Michigan license 4301511162.

Dr. Riddering's primary practice is VA St Louis Health Care System, at 915 N Grand Blvd, Saint Louis, MO 63106 in Saint Louis City. The practice phone is (913) 578-4409.

Dr. Riddering's primary practice is VA St Louis Health Care System in Saint Louis, Missouri. Dr. Riddering is also affiliated with Trinity Health Muskegon Hospital. Dmand AI also links Dr. Riddering to 1 more group practice or clinic and 1 medical group, each named with a free account.

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Riddering practices, 2 sites in all. Vendor and product names are available with a free account.

Ophthalmology is Dr. Riddering's primary specialty in the NPI Registry, under taxonomy code 207W00000X. Dmand AI has Dr. Riddering's licenses on file in 2 states: Michigan and Missouri.

CMS data shows 252 Medicare services from Dr. Riddering across 5 procedure codes in 2024, for 175 Medicare patients. Medicare paid $19,963 for them. Every service was in an office.

CMS counts 175 Medicare patients who saw Dr. Riddering in 2024. The largest group is 75 to 84, with 67 patients. 71% of them have high blood pressure, and 71% have high cholesterol. 23% are also on Medicaid. Their average risk score is 1.20, where 1.00 is the Medicare average.

Across all payers, Dmand AI patient panel data puts Dr. Riddering's median patient age at 72, with 64% women.

In 2024, Dr. Riddering wrote 474 Medicare Part D claims for 172 patients. 76% of them were for generic drugs. CMS names the drug for 420 of them, across 11 drugs with 11 or more claims each, at $11,977 in total drug cost. In 2023, CMS named 607 claims across 11 drugs.

CMS publishes a Merit-based Incentive Payment System (MIPS) score of 84 out of 100 for Dr. Riddering for performance year 2024, reported as part of a group. Dr. Riddering accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 62 procedures of cataract surgery by Dr. Riddering, more than 67% of the clinicians it reports for that procedure.

Dmand AI links 3 papers to Dr. Riddering. The most frequent topics are Graves Ophthalmopathy. Dr. Riddering has published most often in Ophthalmic Plast Reconstr Surg. Dr. Riddering's most frequent co-authors are Alon Kahana, MD and Xihui Lin, MD.

CMS Open Payments shows 50 general payments to Dr. Riddering from 16 drug and device companies from 2020 to 2025. Food and beverage make up the largest share, 95% of the total. Alcon Laboratories Inc paid the most, $1,377.

Dr. Riddering graduated from University of Michigan Medical School in 2019.