Quick answers
- Does Stephen L. Kollias accept Medicare assignment?
- Yes. Medicare's clinician data says Stephen L. Kollias accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Stephen L. Kollias see?
- In 2024, CMS data shows 181 Original Medicare patients and 598 services for Stephen L. Kollias. This counts Original Medicare only and measures volume, not quality.
- What is Stephen L. Kollias's NPI number?
- 1043263338. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Stephen L. Kollias, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 181 |
|---|---|
| Services billed to Medicare | 598 |
| Different services or procedures | 42 |
| Participating Medicare provider | Yes |
| Average age of these patients | 73 |
Most frequent services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)159 services
- X-ray of shoulder, minimum of 2 views (73030)88 services
- X-ray of upper spine, 2-3 views (72040)74 services
- X-ray of knee, 4 or more views (73564)52 services
- Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more (99212)41 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High cholesterol75%
- Arthritis75%
- High blood pressure66%
- Ischemic heart disease25%
- Diabetes23%
- Depression18%
Hospitals where Stephen L. Kollias works
Medicare's Facility Affiliation Data lists Stephen L. Kollias at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- Orthoindy HospitalIndianapolis, IN · Acute Care Hospital · Emergency services: not listed by Medicare · CCN 150160
Practice locations
Addresses where Stephen L. Kollias is enrolled with Medicare (CMS data updated October 2, 2026).
- 10995 Allisonville Rd, Suite 102Fishers, IN 46038 (317) 915‑8110
- 1260 Innovation Pkwy, Suite 100Greenwood, IN 46143 (317) 884‑5200
- 288 E 175th St, Suite 100Westfield, IN 46074 (317) 275‑6140
- 8450 Northwest BlvdIndianapolis, IN 46278 (317) 802‑2000
Group practices
Medicare enrollment lists Stephen L. Kollias as a member of this group (CMS data updated October 2, 2026).
- Orthopaedics-Indianapolis Inc371 clinicians in the group
Specialties
- Orthopedic Surgeryprimary
- Sports Medicinealso
Other orthopedic surgeons in Fishers
Clinicians with the same Medicare primary specialty in Fishers, IN — not a recommendation.
Other clinicians in Orthopaedics-Indianapolis Inc
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Chicago, Pritzker School Of Medicine |
| Graduation year | 1989 (37 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1043263338 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians