Dr. Eric Marcus Orenstein, MD

Dr. Orenstein practices at Ascension St Vincent Hospital- Indianapolis in Indianapolis, Indiana.

Dr. Orenstein's NPI, 1174524839, was assigned on August 3, 2005. Dr. Orenstein graduated from University of Maryland School of Medicine - Baltimore in 1980. Dr. Orenstein's Indiana license number on file is 01062952A.

Dr. Orenstein's primary practice is Ascension St Vincent Hospital- Indianapolis, at 2001 W 86th St, Indianapolis, IN 46260 in Marion County. The practice phone is (317) 338-2172.

Dr. Orenstein's primary practice is Ascension St Vincent Hospital- Indianapolis in Indianapolis, Indiana. Dr. Orenstein is also affiliated with Indiana University Health Arnett Hospital. The medical group on file is IU Health Medical Group. Dmand AI also links Dr. Orenstein to 1 more hospital, 2 group practices and clinics and 1 medical group, each named with a free account.

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Orenstein practices, 4 sites in all. Vendor and product names are available with a free account.

Orthopaedic surgery is Dr. Orenstein's primary specialty in the NPI Registry, under taxonomy code 207X00000X. Dr. Orenstein is board certified in orthopaedic surgery by the American Board of Orthopaedic Surgery. Dmand AI has Dr. Orenstein's licenses on file in 11 states: Indiana, South Dakota, Illinois, Michigan, Ohio, Washington, Oregon, Wisconsin, Florida, Maryland and Pennsylvania.

Dmand AI lists arm, wrist, hand fracture and dislocation, arthritis, broken or dislocated ankle/ or foot, bursitis, carpal tunnel syndrome, fluid in a joint, hand joint or tendon inflammation and hip replacement among the conditions Dr. Orenstein treats.

CMS data shows 1,690 Medicare services from Dr. Orenstein across 7 procedure codes in 2024, for 240 Medicare patients. Medicare paid $37,148 for them.

CMS counts 240 Medicare patients who saw Dr. Orenstein in 2024. The largest group is 65 to 74, with 100 patients. 75% of them have high blood pressure, and 74% have arthritis. 11% are also on Medicaid. Their average risk score is 1.34, where 1.00 is the Medicare average.

Across all payers, Dmand AI patient panel data puts Dr. Orenstein's median patient age at 63, with 59% women.

In 2024, Dr. Orenstein wrote 145 Medicare Part D claims for 100 patients. 99% of them were for generic drugs. CMS names the drug for 110 of them, across 3 drugs with 11 or more claims each, at $752 in total drug cost. In 2023, CMS named 150 claims across 5 drugs.

CMS publishes a Merit-based Incentive Payment System (MIPS) score of 83 out of 100 for Dr. Orenstein for performance year 2024, reported individually. Dr. Orenstein accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 12 procedures of hip replacement by Dr. Orenstein, more than 53% of the clinicians it reports for that procedure.

Lower limb (leg) arthroscopy (minimally invasive joint repair): 1 to 10 procedures (CMS shows small counts as a range)

CMS Open Payments shows 111 general payments to Dr. Orenstein from 16 drug and device companies from 2016 to 2025. Travel and lodging make up the largest share, 52% of the total. Zimmer Biomet Holdings, Inc. paid the most, $8,728.

Dmand AI lists 7 awards for Dr. Orenstein, most recently ACS Fellow in 2012.

Dr. Orenstein graduated from University of Maryland School of Medicine - Baltimore in 1980. Dr. Orenstein is a member of AAOS, AAHKS, ACS, AMA, Clinical Orthopaedic Society and Mid America Orthopaedic Association.

Dr. Orenstein is in network with 9 carriers, including Aetna, Elevance and United Healthcare. Medicare plans come from the most carriers, 8. Check the plan with the practice before a visit.