Dr. Xenos Lloyd Mason, MD

Dr. Mason practices at Keck Hospital of USC in Los Angeles, California, part of University of Southern California.

Dr. Mason's NPI, 1619358801, was assigned on June 12, 2015. Dr. Mason graduated from Harvard Medical School in 2015. Dr. Mason holds California license A162496.

Dr. Mason's primary practice is Keck Hospital of USC, at 1500 San Pablo Street, Los Angeles, CA 90033 in Los Angeles County. The practice phone is (323) 442-8656.

Dr. Mason's primary practice is Keck Hospital of USC in Los Angeles, California, part of University of Southern California. Dr. Mason is also affiliated with Rancho Los Amigos National Rehabilitation Center. The medical group on file is USC Care Medical Group. Dmand AI also links Dr. Mason to 1 more community health center, 1 group practice or clinic, 1 urgent care center and 1 medical group, each named with a free account.

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Mason practices, 5 sites in all. Vendor and product names are available with a free account.

Neurology is Dr. Mason's primary specialty in the NPI Registry, under taxonomy code 2084N0400X. Dr. Mason is board certified in neurology by the American Board of Psychiatry and Neurology. Dmand AI has Dr. Mason's licenses on file in 2 states: California and Massachusetts.

Dmand AI lists parkinson's disease and seizures among the conditions Dr. Mason treats.

CMS data shows 257 Medicare services from Dr. Mason across 4 procedure codes in 2024, for 82 Medicare patients. Medicare paid $25,160 for them.

CMS counts 82 Medicare patients who saw Dr. Mason in 2024. The largest group is 65 to 74, with 41 patients. 75% of them have parkinson's disease, and 72% have high cholesterol. 21% are also on Medicaid. Their average risk score is 1.51, 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. Mason's median patient age at 68, with 46% women.

In 2024, Dr. Mason wrote 503 Medicare Part D claims for 63 patients. 80% of them were for generic drugs. CMS names the drug for 401 of them, across 17 drugs with 11 or more claims each, at $133,117 in total drug cost. In 2023, CMS named 253 claims across 11 drugs.

Dr. Mason accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Mason as offering telehealth.

Dmand AI links 1 paper to Dr. Mason in 2025. Dr. Mason's most frequent co-authors are Adam M. Frank, MD and Kacey Jade Hu, MD.

CMS Open Payments shows 127 general payments to Dr. Mason from 7 drug and device companies from 2019 to 2025. Consulting fees make up the largest share, 52% of the total. Abbott Laboratories paid the most, $21,295.

Dr. Mason graduated from Harvard Medical School in 2015.

Dr. Mason is in network with 6 carriers, including Aetna, Blue Cross Blue Shield of Michigan and Blue Cross Blue Shield of Massachusetts. Medicare plans come from the most carriers, 6. Check the plan with the practice before a visit.