Dr. Mark Floyd Lew, MD

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

Dr. Lew's NPI, 1578507505, was assigned on June 16, 2006. Dr. Lew graduated from George Washington University School of Medicine and Health Sciences in 1987. Dr. Lew's California license number on file is A45068.

Dr. Lew'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. Lew's primary practice is Keck Hospital of USC in Los Angeles, California, part of University of Southern California. Dr. Lew is also affiliated with Casa Colina Hospital and Centers for Healthcare. The medical group on file is USC Care Medical Group. Dmand AI also links Dr. Lew to 1 more group practice or clinic, 1 other site and 1 urgent care center, each named with a free account.

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

Neurology is Dr. Lew's primary specialty in the NPI Registry, under taxonomy code 2084N0400X. Dr. Lew is board certified in neurology by the American Board of Psychiatry and Neurology. Dr. Lew has a license on file in California.

Dmand AI lists essential tremor, non-alzheimer's dementia (chronic), parkinson's disease and restless legs syndrome among the conditions Dr. Lew treats.

CMS data shows 775 Medicare services from Dr. Lew across 7 procedure codes in 2024, for 240 Medicare patients. Medicare paid $57,545 for them.

CMS counts 240 Medicare patients who saw Dr. Lew in 2024. The largest group is 65 to 74, with 104 patients. 75% of them have high cholesterol, and 68% have parkinson's disease. 15% are also on Medicaid. Their average risk score is 1.46, where 1.00 is the Medicare average.

Across all payers, Dmand AI patient panel data puts Dr. Lew's median patient age at 75, with 49% women.

In 2024, Dr. Lew wrote 1,865 Medicare Part D claims for 203 patients. 85% of them were for generic drugs. CMS names the drug for 1,763 of them, across 29 drugs with 11 or more claims each, at $534,079 in total drug cost. In 2023, CMS named 1,970 claims across 31 drugs.

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

Dmand AI links 19 papers to Dr. Lew, published from 2012 to 2025. 2016 was the busiest year, with 5. Dr. Lew's most frequent co-authors are Stuart H. Isaacson, MD, Robert A. Hauser, MD and Khashayar Dashtipour, MD.

Dmand AI links Dr. Lew to 2 clinical trials. Conditions studied include Constipation, Parkinson Disease and Parkinsonian Disorders.

CMS Open Payments shows 954 general payments to Dr. Lew from 26 drug and device companies from 2016 to 2025. Speaker and faculty fees make up the largest share, 43% of the total. MDD US Operations, LLC paid the most, $193,615. It also lists 2 research payments totaling $5,065 in 2019.

Dmand AI lists 4 awards for Dr. Lew, most recently America's Top Doctors in 2014.

Dr. Lew graduated from George Washington University School of Medicine and Health Sciences in 1987. Dr. Lew is a member of MDS.

Dr. Lew is in network with 7 carriers, including Aetna, Blue Cross Blue Shield of Michigan and Blue Cross Blue Shield of Massachusetts. Medicare plans come from the most carriers, 7. Check the plan with the practice before a visit.