Dr. Greg D. Lewis, MD

Dr. Lewis practices at Scripps Memorial Hospital La Jolla in La Jolla, California, part of Scripps Health.

Dr. Lewis' NPI, 1063447811, was assigned on July 11, 2006. Dr. Lewis graduated from University of Miami, Miller School of Medicine in 1991. Dr. Lewis holds California license G75591.

Dr. Lewis' primary practice is Scripps Memorial Hospital La Jolla, at 9888 Genesee Avenue, La Jolla, CA 92037 in San Diego County. The practice phone is (858) 626-4123.

Dr. Lewis' primary practice is Scripps Memorial Hospital La Jolla in La Jolla, California, part of Scripps Health. The medical group on file is XiMED Hospitalists. Dmand AI also links Dr. Lewis to 1 more group practice or clinic, 1 skilled nursing facility and 1 medical group, each named with a free account.

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Lewis practices, 3 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 internal medicine by the American Board of Internal Medicine. Dmand AI has Dr. Lewis' licenses on file in 4 states: California, Georgia, Nevada and Florida.

Dmand AI lists acute diabetes, acute stomach ulcer, cardiac arrhythmia, cellulitis, circulation problems, congestive heart failure, gastrointestinal bleeding and gastrointestinal inflammation among the conditions Dr. Lewis treats.

CMS data shows 702 Medicare services from Dr. Lewis across 5 procedure codes in 2024, for 212 Medicare patients. Medicare paid $61,385 for them. Every service was in a facility, such as a hospital, rather than an office.

CMS counts 212 Medicare patients who saw Dr. Lewis in 2024. The largest group is 75 to 84, with 87 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 27% are also on Medicaid. Their average risk score is 2.56, 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 68, with 48% women.

In 2024, Dr. Lewis wrote 262 Medicare Part D claims for 98 patients. 88% of them were for generic drugs. CMS names the drug for 24 of them, across 2 drugs with 11 or more claims each, at $193 in total drug cost. In 2021, CMS named 183 claims across 10 drugs.

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

Dmand AI links 5 papers to Dr. Lewis, published from 2012 to 2025. Dr. Lewis' most frequent co-authors are Anita Deswal, MD, Raymond Louis Benza, MD and Barry A. Borlaug, MD.

Dmand AI links Dr. Lewis to 2 clinical trials. Conditions studied include Hypertension, Pulmonary and Hypertension.

CMS Open Payments shows 9 general payments to Dr. Lewis from 5 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 100% of the total. Medtronic, Inc. paid the most, $169.

Dr. Lewis graduated from University of Miami, Miller School of Medicine in 1991.

Dr. Lewis is in network with 5 carriers, including Aetna, Excellus BlueCross BlueShield and Elevance. Medicare plans come from the most carriers, 5. Check the plan with the practice before a visit.