Dr. Vignesh Viswanathan, MD

Dr. Viswanathan practices at University of Alabama Birmingham Hospital in Birmingham, Alabama.

Dr. Viswanathan's NPI, 1477905602, was assigned on July 12, 2016. Dr. Viswanathan holds Iowa license 49201.

Dr. Viswanathan's primary practice is University of Alabama Birmingham Hospital, at 619 19th S St, Birmingham, AL 35211 in Jefferson County. The practice phone is (205) 731-9770.

Dr. Viswanathan's primary practice is University of Alabama Birmingham Hospital in Birmingham, Alabama. Dr. Viswanathan is also affiliated with UAB Hospital. The medical group on file is UAB Medicine. Dmand AI also links Dr. Viswanathan to 4 more hospitals, 3 group practices and clinics and 2 medical groups, each named with a free account.

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Viswanathan practices, 8 sites in all. Vendor and product names are available with a free account.

Nephrology is Dr. Viswanathan's primary specialty in the NPI Registry, under taxonomy code 207RN0300X. Dr. Viswanathan is licensed in Iowa.

CMS data shows 1,888 Medicare services from Dr. Viswanathan across 11 procedure codes in 2024, for 613 Medicare patients. Medicare paid $121,088 for them.

CMS counts 613 Medicare patients who saw Dr. Viswanathan in 2024. The largest group is 75 to 84, with 219 patients. 75% of them have chronic kidney disease, and 75% have high blood pressure. 18% are also on Medicaid. Their average risk score is 3.78, 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. Viswanathan's median patient age at 61, with 47% women.

In 2024, Dr. Viswanathan wrote 1,184 Medicare Part D claims for 237 patients. 89% of them were for generic drugs. CMS names the drug for 1,016 of them, across 24 drugs with 11 or more claims each, at $68,607 in total drug cost. In 2023, CMS named 569 claims across 20 drugs.

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

Dmand AI links 32 papers to Dr. Viswanathan, published from 2014 to 2025. 2022 was the busiest year, with 5. The most frequent topics are Mice, Inbred C57BL, Radiotherapy Dosage and Cell Proliferation. Dr. Viswanathan has published most often in Radiother Oncol. Dr. Viswanathan's most frequent co-authors are Billy W. Loo, MD, PhD, Jeremy Fields, MD and Bruce M. Boman, MD.

CMS Open Payments shows 2 general payments to Dr. Viswanathan from 2 drug and device companies from 2019 to 2024. Food and beverage make up the largest share, 100% of the total. Relypsa, Inc. paid the most, $66.