Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Steven J Mahon, DO

Individual provider Emergency Medicine Physician · NPI 1710285788

Steven J Mahon, DO practises Emergency Medicine in Indianapolis, Indiana. Graduated from Midwestern University, Chicago College of Osteopathic Med in 2013, 13 years ago. Practices with Clarksville Emergency Group PC, a 152-clinician group, works from 3 locations and accepts Medicare assignment. Licensed in Indiana.

Years since qualifying
13
Trained at
Midwestern University, Chicago College of Osteopathic Med
Licensed in
IN
In the registry since
2011
Specialties on file
3
What do these letters mean?
DO — Doctor of Osteopathic Medicine
A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.

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Practice location Address checks out

950 N Meridian St
Indianapolis, IN 46204-1077
Phone: (317) 963-2200
Fax: (317) 963-1621
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (2)

  • 20201 Crawford Ave, Olympia Fields, IL 60461-1010 — (708) 747-4000
  • 996 S State Road 135, Greenwood, IN 46143-7365 — (317) 893-3888

Specialties & licences

Emergency Medicine Physician (primary) Taxonomy 207P00000X · Licence 02004332A (IN)
Emergency Medicine Physician Taxonomy 207P00000X · Licence 02004332 (IN)
Student in an Organized Health Care Education/Training Program Taxonomy 390200000X

Record details

NPI number1710285788
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorNo
NPI enumeratedMarch 1, 2011
Last updated in NPPESNovember 9, 2022
Certification dateNovember 9, 2022

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyEMERGENCY MEDICINE
Medical schoolMIDWESTERN UNIVERSITY, CHICAGO COLLEGE OF OSTEOPATHIC MED
Graduated 2013 (13 years in practice)
Group practice Clarksville Emergency Group Pc — 152 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients226
Services billed 393 a service is one billed item, such as a visit, a test or a procedure
Average patient age75

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at Clarksville Emergency Group PC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 152 clinicians in the practice; 12 are shown here.

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