Dr. Stephen A. Sems, MD

Dr. Sems practices at Mayo Clinic Hospital, Saint Marys Campus in Rochester, Minnesota, part of Mayo Clinic.

Dr. Sems' NPI, 1861471260, was assigned on January 13, 2006. Dr. Sems graduated from Ohio State College of Medicine in 1999. Dr. Sems holds Minnesota license 46623.

Dr. Sems' primary practice is Mayo Clinic Hospital, Saint Marys Campus, at 1216 Second Street Southwest, Rochester, MN 55902 in Olmsted County. The practice phone is (507) 255-5123.

Dr. Sems' primary practice is Mayo Clinic Hospital, Saint Marys Campus in Rochester, Minnesota, part of Mayo Clinic. The medical group on file is Mayo Clinic. Dmand AI also links Dr. Sems to 1 more hospice, named with a free account.

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

Orthopaedic surgery is Dr. Sems' primary specialty in the NPI Registry, under taxonomy code 207X00000X. Dr. Sems is board certified in orthopaedic surgery by the American Board of Orthopaedic Surgery. Dmand AI has Dr. Sems' licenses on file in 3 states: Minnesota, Ohio and Vermont.

Dmand AI lists arm, wrist, hand fracture and dislocation, hip replacement, joint arthropathy, joint or bone infection, knee fracture and dislocation, leg, ankle or foot fracture, muscle pain, fibromyalgia, and limb pain and orthopedic surgery of arms and legs among the conditions Dr. Sems treats.

CMS data shows 106 Medicare services from Dr. Sems across 4 procedure codes in 2024, for 140 Medicare patients. Medicare paid $20,650 for them.

CMS counts 140 Medicare patients who saw Dr. Sems in 2024. The largest group is 75 to 84, with 52 patients. 75% of them have high blood pressure, and 74% have high cholesterol. 20% are also on Medicaid. Their average risk score is 2.01, 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. Sems' median patient age at 76, with 53% women.

In 2024, Dr. Sems wrote 110 Medicare Part D claims for 17 patients. 90% of them were for generic drugs. CMS names the drug for 12 of them, across 1 drug with 11 or more claims each, at $89 in total drug cost. In 2020, CMS named 49 claims across 3 drugs.

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

Hip replacement: 1 to 10 procedures (CMS shows small counts as a range)

Knee replacement: 1 to 10 procedures (CMS shows small counts as a range)

Dmand AI links 47 papers to Dr. Sems, published from 2011 to 2025. 2020 was the busiest year, with 3. The most frequent topics are Fracture Fixation, Internal, Femoral Fractures and Bone Plates. Dr. Sems has published most often in J Orthop Trauma. Dr. Sems' most frequent co-authors are Brandon J. Yuan, MD, Jonathan David Barlow, MD and Krystin Alane Hidden, MD.

Dmand AI links Dr. Sems to 1 clinical trial. Conditions studied include Ankle Fractures and Ankle Injuries.

CMS Open Payments shows 158 general payments to Dr. Sems from 7 drug and device companies from 2016 to 2025. Royalties and licenses make up the largest share, 90% of the total. Zimmer Biomet Holdings, Inc. paid the most, $822,166.

Dr. Sems graduated from Ohio State College of Medicine in 1999.

Dr. Sems is in network with 15 carriers, including Aetna, Elevance and Blue Cross Blue Shield of Michigan. PPO plans come from the most carriers, 10. Check the plan with the practice before a visit.