Dr. Mark Thomas Dillon, MD

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

Dr. Dillon's NPI, 1578629572, was assigned on December 28, 2006. Dr. Dillon graduated from University Of Michigan Medical School in 2001. Dr. Dillon holds Indiana license 01085449A.

Dr. Dillon'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. Dillon's primary practice is Ascension St Vincent Hospital- Indianapolis in Indianapolis, Indiana. Dr. Dillon is also affiliated with IU Health Methodist Hospital. The medical group on file is IU Health Medical Group. Dmand AI also links Dr. Dillon 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. Dillon practices, 4 sites in all. Vendor and product names are available with a free account.

Orthopaedic surgery is Dr. Dillon's primary specialty in the NPI Registry, under taxonomy code 207X00000X. Dmand AI has Dr. Dillon's licenses on file in 2 states: Indiana and Pennsylvania.

Dmand AI lists arm, wrist, hand fracture and dislocation, arthritis, joint arthropathy, joint pain, minor injury to a limb, muscle pain, fibromyalgia, and limb pain, rotator cuff injury and shoulder arthroscopy/rotator cuff repair among the conditions Dr. Dillon treats.

CMS data shows 429 Medicare services from Dr. Dillon across 9 procedure codes in 2024, for 185 Medicare patients. Medicare paid $62,787 for them.

CMS counts 185 Medicare patients who saw Dr. Dillon in 2024. The largest group is 65 to 74, with 101 patients. 75% of them have arthritis, and 73% have high blood pressure. 9% are also on Medicaid. Their average risk score is 1.25, where 1.00 is the Medicare average.

Across all payers, Dmand AI patient panel data puts Dr. Dillon's median patient age at 64, with 56% women.

In 2024, Dr. Dillon wrote 45 Medicare Part D claims for 31 patients. 100% of them were for generic drugs. CMS names the drug for 21 of them, across 1 drug with 11 or more claims each, at $77 in total drug cost. In 2023, CMS named 18 claims across 1 drug.

Dr. Dillon accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Dillon as offering telehealth. CMS counts 29 procedures of upper limb (arm) arthroscopy (minimally invasive joint repair) by Dr. Dillon, more than 73% 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)

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

Dmand AI links 50 papers to Dr. Dillon, published from 2010 to 2025. 2019 was the busiest year, with 8. The most frequent topics are Arthroplasty, Replacement, Shoulder, Shoulder Joint and Reoperation. Dr. Dillon has published most often in J Shoulder Elbow Surg. Dr. Dillon's most frequent co-authors are Ronald A. Navarro, MD, Edward H. Yian, MD and Anshuman Singh, MD.

CMS Open Payments shows 179 general payments to Dr. Dillon from 7 drug and device companies from 2021 to 2025. Consulting fees make up the largest share, 67% of the total. Arthrex, Inc. paid the most, $92,238.

Dmand AI lists 1 award for Dr. Dillon, most recently CMS Stage 1 2012 in 2011.

Dr. Dillon graduated from University Of Michigan Medical School in 2001.

Dr. Dillon is in network with 7 carriers, including Elevance, Blue Cross Blue Shield of Michigan and United Healthcare. Medicare plans come from the most carriers, 7. Check the plan with the practice before a visit.