Dr. Subbu Nagappan, MD

Dr. Nagappan practices at Riverside Community Hospital in Riverside, California, part of HCA Healthcare.

Dr. Nagappan's NPI, 1285616185, was assigned on November 16, 2005. Dr. Nagappan graduated from University of Illinois College of Medicine - Chicago in 1983. Dr. Nagappan holds California license G70352.

Dr. Nagappan's primary practice is Riverside Community Hospital, at 4445 Magnolia Avenue, Riverside, CA 92501 in Riverside County. The practice phone is (951) 788-3000.

Dr. Nagappan's primary practice is Riverside Community Hospital in Riverside, California, part of HCA Healthcare. The medical group on file is Riverside Medical Clinic. Dmand AI also links Dr. Nagappan to 1 more group practice or clinic and 1 medical group, each named with a free account.

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Nagappan practices, 2 sites in all. Vendor and product names are available with a free account.

Surgery is Dr. Nagappan's primary specialty in the NPI Registry, under taxonomy code 208600000X. Dr. Nagappan is board certified in surgery by the American Board of Surgery. Dmand AI has Dr. Nagappan's licenses on file in 2 states: California and Arizona.

Dmand AI lists abdominal hernia repair surgery, acute gallbladder or bile duct inflammation, chest trauma, colon removal, groin hernia surgery, mastectomy, non-surgical back problems and traumatic coma among the conditions Dr. Nagappan treats.

CMS data shows 308 Medicare services from Dr. Nagappan across 6 procedure codes in 2024, for 199 Medicare patients. Medicare paid $24,324 for them. Every service was in a facility, such as a hospital, rather than an office.

CMS counts 199 Medicare patients who saw Dr. Nagappan in 2024. The largest group is 65 to 74, with 72 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 60% are also on Medicaid. Their average risk score is 2.88, 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. Nagappan's median patient age at 55, with 46% women.

In 2024, Dr. Nagappan wrote 12 Medicare Part D claims. 100% of them were for generic drugs. They cover 2 drugs, with $319 in total drug cost. In 2022, CMS named 44 claims across 2 drugs.

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

Hernia repair - groin (open): 1 to 10 procedures (CMS shows small counts as a range)

Removal of tissue: 1 to 10 procedures (CMS shows small counts as a range)

CMS Open Payments shows 12 general payments to Dr. Nagappan from 7 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 100% of the total. Cumberland Pharmaceuticals, Inc. paid the most, $100.

Dmand AI lists 3 awards for Dr. Nagappan, most recently CMS Stage 1 EHR in 2013.

Dr. Nagappan graduated from University of Illinois College of Medicine - Chicago in 1983. Dr. Nagappan is a member of ACS.

Dr. Nagappan 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.