Dr. John Evan Sy, MD

Dr. Sy practices at Fresenius Kidney Care University Dialysis Center Of Orange in Orange, California.

Dr. Sy's NPI, 1639435738, was assigned on April 3, 2012. Dr. Sy graduated from UT Southwestern Medical Center in 2012. Dr. Sy holds California license A128347.

Dr. Sy's primary practice is Fresenius Kidney Care University Dialysis Center of Orange, at 1809 West Chapman Avenue, Orange, CA 92668 in Orange County. The practice phone is (714) 456-5555.

Dr. Sy's primary practice is Fresenius Kidney Care University Dialysis Center Of Orange in Orange, California. Dr. Sy is also affiliated with UCI Health - Orange. The medical group on file is UCI Health Physicians. Dmand AI also links Dr. Sy to 1 more home health agency and 1 medical group, each named with a free account.

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Sy practices, 3 sites in all. Vendor and product names are available with a free account.

Nephrology is Dr. Sy's primary specialty in the NPI Registry, under taxonomy code 207RN0300X. Dr. Sy is board certified in internal medicine by the American Board of Internal Medicine. Dr. Sy is licensed in California.

Dmand AI lists acute kidney failure, chronic kidney disease, fluid and electrolyte imbalances, gout, kidney cysts and kidney disease among the conditions Dr. Sy treats.

CMS data shows 1,323 Medicare services from Dr. Sy across 11 procedure codes in 2024, for 415 Medicare patients. Medicare paid $170,515 for them.

CMS counts 415 Medicare patients who saw Dr. Sy in 2024. The largest group is 65 to 74, with 142 patients. 75% of them have chronic kidney disease, and 75% have high blood pressure. 60% are also on Medicaid. Their average risk score is 5.15, 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. Sy's median patient age at 63, with 45% women.

In 2024, Dr. Sy wrote 925 Medicare Part D claims for 127 patients. 70% of them were for generic drugs. CMS names the drug for 645 of them, across 26 drugs with 11 or more claims each, at $294,427 in total drug cost. In 2023, CMS named 89 claims across 5 drugs.

CMS publishes a Merit-based Incentive Payment System (MIPS) score of 100 out of 100 for Dr. Sy for performance year 2024, reported through an alternative payment model (APM). Dr. Sy accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Sy as offering telehealth.

Dmand AI links 18 papers to Dr. Sy, published from 2014 to 2022. 2019 was the busiest year, with 8. The most frequent topics are Kidney Failure, Chronic, Renal Dialysis and Frailty. Dr. Sy has published most often in Am J Nephrol. Dr. Sy's most frequent co-authors are Kamyar Zadeh Kalantar-Zadeh, MD, Connie Meeyoung Rhee, MD and Csaba Pal Kovesdy, MD.

CMS Open Payments shows 54 general payments to Dr. Sy from 20 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 93% of the total. Fresenius USA Marketing, Inc. paid the most, $462.

Dr. Sy graduated from UT Southwestern Medical Center in 2012.

Dr. Sy is in network with 13 carriers, including Aetna, Blue Cross Blue Shield of Michigan and United Healthcare. PPO plans come from the most carriers, 9. Check the plan with the practice before a visit.