NPPES file of Aug 9, 2026

Steven J. Mahon, DO

Emergency Medicine Physician · Indianapolis, IN

Steven J. Mahon, DO is an emergency medicine physician with a practice address in Indianapolis, Indiana, and NPI 1710285788, issued on Mar 1, 2011. Check the license (Indiana 02004332A, as entered in NPPES) on the Medical Licensing Board of Indiana; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1710285788
Name
Steven J. Mahon
Credential
DO
Primary taxonomy
Emergency Medicine Physician 207P00000X
License numbers
02004332A IN
02004332 IN
Self-reported in NPPES; status is on the state search
Practice location
950 N Meridian St, Indianapolis, IN 46204
Phone
(317) 963-2200
Enumerated
Mar 1, 2011
Record last updated
Nov 9, 2022
Fax
(317) 963-1621
Medicare enrollment
Enrolled (PECOS I20140327000584); accepts Medicare assignment
Medical or professional school
Midwestern University, Chicago College Of Osteopathic Med, 2013
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 950 N Meridian St

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Eric Afuseh, DNPFamily Nurse Practitioner1154751949
  2. Meganh Ali, RDRegistered Dietitian1154240554
  3. Angela Anglea, MSW, LSWSocial Worker1114694684
  4. Brooke Baker, LCSWClinical Social Worker1659063279
  5. Krista Banks-Wilson, LCSWClinical Social Worker1831677517
  6. Katherine Bradner, PHARM. D.Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist1285874586

Verify Steven J. Mahon in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Licensing Board of Indiana
    Search for license 02004332A
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Indiana license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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2.0 times the Medicare Part D claims of the average emergency medicine physician in 2024

462 Medicare Part D claims for 303 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D.

  1. Steven Mahon462
  2. Specialty average226

Most prescribed

  1. Prednisone108 claims
  2. Cephalexin38 claims
  3. Cefdinir33 claims
  4. Doxycycline Monohydrate31 claims
  5. Albuterol Sulfate Hfa24 claims
  6. Amoxicillin-Clavulanate Potass19 claims

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

Bills Medicare through 2 group practices

  1. Clarksville Emergency Group PCLafayette, IN
  2. Indiana University Health Urgent Care Centers LLCBrownsburg, IN

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Steven J. Mahon among 1,293 emergency medicine physician records in Indiana

Steven J. Mahon, DO is one of 1,293 emergency medicine physician records with a practice address in Indiana. 83% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2011, is newer than 61% of them.

  • NPI issued2011 · 61% of these records are older, 37% newer
  • In a Medicare fileYes · 83% of these records are
  • In the CMS Doctors and Clinicians fileYes · 63% of these records are
  • Graduated2013 · median 2012 among the 814 with a school on file
  • Record last updated2022 · 54% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207P00000X and a Indiana practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

437 emergency medicine physician records list a practice address in Indianapolis

They are 437 of the 30,493 NPPES records with a practice address in Indianapolis, and 1,293 emergency medicine physician records in Indiana.

The 8 emergency medicine physician records with the nearest ZIP codes

  1. Amy Collins, MDIndianapolis, IN 462041154369767
  2. Sean Cady, DOIndianapolis, IN 462031962031245
  3. Carol Weesner, MDIndianapolis, IN 462051891742011
  4. Leah Anderton, DOIndianapolis, IN 462021700670866
  5. Maxwell BohrerIndianapolis, IN 462021801633904
  6. Mallory Cescato, MDIndianapolis, IN 462021154019545
  7. Anna Chee, MDIndianapolis, IN 462021316799497
  8. Johnny Dang, DOIndianapolis, IN 462021598567950

Common questions

What is Steven J. Mahon, DO's NPI number?

Steven J. Mahon, DO's National Provider Identifier (NPI) is 1710285788, issued on Mar 1, 2011. An NPI identifies a provider in billing; it is not a license.

Where is Steven J. Mahon, DO located?

The NPPES record lists a practice address at 950 N Meridian St, Indianapolis, IN, 46204. Phone: (317) 963-2200. Providers update this record themselves, so call before visiting.

How can I verify Steven J. Mahon, DO's license?

NPPES lists Indiana license number 02004332A, as entered by the provider. Search the Medical Licensing Board of Indiana at https://www.in.gov/pla/professions/physicians-home/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Steven J. Mahon, DO prescribe under Medicare Part D?

In 2024, Steven J. Mahon, DO had 462 Medicare Part D claims for 303 beneficiaries; the average among emergency medicine physician prescribers was 226. Part D covers Medicare prescriptions only.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.