Dr. Jonathan Lo, MD

Dr. Lo practices at Kaiser Permanente - Fontana Medical Center in Fontana, California.

Dr. Lo's NPI, 1164570941, was assigned on January 8, 2007. Dr. Lo graduated from UC San Diego School of Medicine in 1997. Dr. Lo holds California license A66923.

Dr. Lo's primary practice is Kaiser Permanente - Fontana Medical Center, at 9965 Sierra Ave, Fontana, CA 92335 in San Bernardino County. The practice phone is (909) 427-5000.

Dr. Lo's primary practice is Kaiser Permanente - Fontana Medical Center in Fontana, California. Dr. Lo is also affiliated with Fontana Medical Center. The medical group on file is Southern California Permanente Medical Group.

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

Internal medicine is Dr. Lo's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Lo is board certified in internal medicine by the American Board of Internal Medicine. Dr. Lo is licensed in California.

Dmand AI lists sepsis among the conditions Dr. Lo treats.

CMS data shows 36 Medicare services from Dr. Lo across 1 procedure code in 2024, for 15 Medicare patients. Medicare paid $2,193 for them. Every service was in a facility, such as a hospital, rather than an office.

CMS counts 15 Medicare patients who saw Dr. Lo in 2024. 75% of them have high blood pressure, and 73% have diabetes. Their average risk score is 4.11, 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. Lo's median patient age at 72, with 55% women.

In 2024, Dr. Lo wrote 438 Medicare Part D claims for 168 patients. 89% of them were for generic drugs. CMS names the drug for 220 of them, across 13 drugs with 11 or more claims each, at $16,367 in total drug cost. In 2023, CMS named 95 claims across 7 drugs.

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

Upper gastrointestinal (GI) endoscopy for acid reflux: 1 to 10 procedures (CMS shows small counts as a range)

CMS Open Payments shows 7 general payments to Dr. Lo from 3 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 100% of the total. Relypsa, Inc. paid the most, $318.

Dr. Lo graduated from UC San Diego School of Medicine in 1997.

Dr. Lo is in network with 2 carriers, including Kaiser Permanente and CMS Medicare. EPO plans come from the most carriers, 1. Check the plan with the practice before a visit.