Dr. Joshua Factor Lewis, MD

Dr. Lewis practices at Cedars-Sinai Medical Center in Los Angeles, California, part of Cedars-Sinai Health System.

Dr. Lewis' NPI, 1306113360, was assigned on November 18, 2011. Dr. Lewis graduated from St. George's University School of Medicine in 2011. Dr. Lewis' California license number on file is A127535.

Dr. Lewis' primary practice is Cedars-Sinai Medical Center, at 8700 Beverly Blvd, Los Angeles, CA 90048 in Los Angeles County. The practice phone is (310) 423-5000.

Dr. Lewis' primary practice is Cedars-Sinai Medical Center in Los Angeles, California, part of Cedars-Sinai Health System. The medical group on file is Inpatient Specialist of California PC. Dmand AI also links Dr. Lewis to 6 more group practices and clinics, 5 medical groups, 3 skilled nursing facilities, 1 home health agency and 1 hospice, each named with a free account.

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Lewis practices, 12 sites in all. Vendor and product names are available with a free account.

Internal medicine is Dr. Lewis' primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Lewis is board certified in addiction medicine by the American Board of Preventive Medicine. Dmand AI has Dr. Lewis' licenses on file in 13 states: California, Arizona, Colorado, Florida, Montana, Nevada, Idaho, Maryland, Pennsylvania, Texas, Wyoming, Minnesota and Washington.

Dmand AI lists acute stomach ulcer, asthma, atrial fibrillation and flutter, bladder disease, chronic anemia, chronic diabetes, chronic hypertension and chronic obstructive pulmonary disease (COPD) among the conditions Dr. Lewis treats.

CMS data shows 1,287 Medicare services from Dr. Lewis across 13 procedure codes in 2024, for 318 Medicare patients. Medicare paid $125,771 for them.

CMS counts 318 Medicare patients who saw Dr. Lewis in 2024. The largest group is 65 to 74, with 98 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 59% are also on Medicaid. Their average risk score is 3.27, 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. Lewis' median patient age at 66, with 57% women.

In 2024, Dr. Lewis wrote 952 Medicare Part D claims for 56 patients. 82% of them were for generic drugs. CMS names the drug for 622 of them, across 25 drugs with 11 or more claims each, at $24,473 in total drug cost. In 2023, CMS named 855 claims across 30 drugs.

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

CMS Open Payments shows 30 general payments to Dr. Lewis from 17 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 100% of the total. Alexion Pharmaceuticals, Inc. paid the most, $369.

Dr. Lewis graduated from St. George's University School of Medicine in 2011.

Dr. Lewis is in network with 16 carriers, including Aetna, Elevance and Blue Cross Blue Shield of Michigan. Medicare plans come from the most carriers, 9. Check the plan with the practice before a visit.