Dr. John Judd Friedewald, MD

Dr. Friedewald practices at Northwestern Memorial Hospital in Chicago, Illinois, part of Northwestern Memorial HealthCare.

Dr. Friedewald's NPI, 1508801093, was assigned on June 18, 2006. Dr. Friedewald graduated from Columbia University College of Physicians and Surgeons in 1998. Dr. Friedewald holds Illinois license 036113031.

Dr. Friedewald's primary practice is Northwestern Memorial Hospital, at 251 E Huron St, Chicago, IL 60611 in Cook County. The practice phone is (312) 926-2000.

Dr. Friedewald's primary practice is Northwestern Memorial Hospital in Chicago, Illinois, part of Northwestern Memorial HealthCare. Dr. Friedewald is also affiliated with Northwestern Medicine Central DuPage Hospital. The medical group on file is Northwestern Medical Faculty Foundation. Dmand AI also links Dr. Friedewald to 2 more hospitals and 1 group practice or clinic, each named with a free account.

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Friedewald practices, 5 sites in all. Vendor and product names are available with a free account.

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

CMS data shows 769 Medicare services from Dr. Friedewald across 7 procedure codes in 2024, for 252 Medicare patients. Medicare paid $48,303 for them. Every service was in a facility, such as a hospital, rather than an office.

CMS counts 252 Medicare patients who saw Dr. Friedewald in 2024. The largest group is under 65, with 117 patients. 75% of them have chronic kidney disease, and 75% have high blood pressure. 35% are also on Medicaid. Their average risk score is 5.61, 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. Friedewald's median patient age at 64, with 40% women.

In 2024, Dr. Friedewald wrote 1,334 Medicare Part D claims for 223 patients. 94% of them were for generic drugs. CMS names the drug for 1,169 of them, across 22 drugs with 11 or more claims each, at $128,823 in total drug cost. In 2023, CMS named 1,390 claims across 25 drugs.

CMS publishes a Merit-based Incentive Payment System (MIPS) score of 95 out of 100 for Dr. Friedewald for performance year 2024, reported through an alternative payment model (APM). Dr. Friedewald accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Friedewald as offering telehealth.

Dmand AI links 124 papers to Dr. Friedewald, published from 2010 to 2025. 2016 was the busiest year, with 10. The most frequent topics are Kidney Transplantation, Tissue and Organ Procurement and Graft Rejection. Dr. Friedewald has published most often in Am J Transplant. Dr. Friedewald's most frequent co-authors are Michael Abecassis, MD, Peter Philip Reese, MD and Darshana M. Dadhania, MD.

Dmand AI links Dr. Friedewald to 5 clinical trials, 2 of them phase 1/2 studies. 1 is still active or recruiting. Conditions studied include Pulmonary Fibrosis and Lung Diseases, Interstitial. National Institute of Allergy and Infectious Diseases (NIAID) sponsors the most, 2.

CMS Open Payments shows 175 general payments to Dr. Friedewald from 14 drug and device companies from 2016 to 2025. Speaker and faculty fees make up the largest share, 62% of the total. Sanofi and Genzyme US Companies paid the most, $89,208.

Dr. Friedewald graduated from Columbia University College of Physicians and Surgeons in 1998.