Ellen S. Horstmann, MD
Emergency Medicine Physician · Indianapolis, IN
Ellen S. Horstmann, MD is an emergency medicine physician with a practice address in Indianapolis, Indiana, and NPI 1265093215, issued on Jun 20, 2019. Check the license (Indiana 01093892A, as entered in NPPES) on the Medical Licensing Board of Indiana; the Medicare figures below come from public CMS files.
- Name
- Ellen S. Horstmann
- Credential
- MD
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License numbers
- 01093892A IN
8597 NE
Self-reported in NPPES; status is on the state search - Practice location
- 720 Eskenazi Ave, Indianapolis, IN 46202
- Phone
- (317) 639-6671
- Enumerated
- Jun 20, 2019
- Record last updated
- Mar 16, 2025
- Fax
- (317) 963-5492
- Medicaid ID
- 300092060 IN
- Medicare enrollment
- Enrolled (PECOS I20240614001006); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 1,293 in Indiana → Look up another NPI →
Also registered at 720 Eskenazi Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Busayo Akintayo, NPNurse Practitioner1215704408
- Shelby Albertson, PHARMDAmbulatory Care Pharmacist1952987943
Verify Ellen S. Horstmann in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Licensing Board of Indiana
Search for license 01093892ACheck the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
76% fewer Medicare Part D claims than the average emergency medicine physician in 2024
55 Medicare Part D claims for 37 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. 11 claims were for opioids.
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
- Indiana University Health Care Associates IncMuncie, IN
- IU Health Medical Group LLCIndianapolis, IN
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ellen S. Horstmann among 1,293 emergency medicine physician records in Indiana
Ellen S. Horstmann, MD 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 2019, is newer than 84% of them.
- NPI issued2019 · 84% of these records are older, 12% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2017 · median 2012 among the 814 with a school on file
- Record last updated2025 · 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.
All 1,293 in Indiana → Every provider in Indianapolis → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Edward Bartkus, MDIndianapolis, IN 462021528001484
- Bart Besinger, MDIndianapolis, IN 462021508809468
- Geoffrey Billows, MDIndianapolis, IN 462021306889217
- Suzanne Combs, M.D.Indianapolis, IN 462021902848005
- James Doll, M.D.Indianapolis, IN 462021528000627
- C Fletcher, M.D.Indianapolis, IN 462021982646014
- Melanie Heniff, MDIndianapolis, IN 462021215979349
- Michelle Overfelt, MDIndianapolis, IN 462021609816628
Common questions
What is Ellen S. Horstmann, MD's NPI number?
Ellen S. Horstmann, MD's National Provider Identifier (NPI) is 1265093215, issued on Jun 20, 2019. An NPI identifies a provider in billing; it is not a license.
Where is Ellen S. Horstmann, MD located?
The NPPES record lists a practice address at 720 Eskenazi Ave, Indianapolis, IN, 46202. Phone: (317) 639-6671. Providers update this record themselves, so call before visiting.
How can I verify Ellen S. Horstmann, MD's license?
NPPES lists Indiana license number 01093892A, 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 Ellen S. Horstmann, MD prescribe under Medicare Part D?
In 2024, Ellen S. Horstmann, MD had 55 Medicare Part D claims for 37 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.