Stephen J. Koewler, MD
Internal Medicine Physician · Evansville, IN
Stephen J. Koewler, MD is an internal medicine physician with a practice address in Evansville, Indiana, and NPI 1467439844, issued on Dec 28, 2005. Check the license (Indiana 01036949A, as entered in NPPES) on the Medical Licensing Board of Indiana; the Medicare figures below come from public CMS files.
- Name
- Stephen J. Koewler
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 01036949A IN
Self-reported in NPPES; status is on the state search - Practice location
- 3801 Bellemeade Ave, Evansville, IN 47714
- Phone
- (812) 485-1782
- Enumerated
- Dec 28, 2005
- Record last updated
- Jul 11, 2022
- Fax
- (812) 485-1713
- Medicaid ID
- 100357980 IN
- Medicare enrollment
- Enrolled (PECOS I20080707000315); accepts Medicare assignment
- Medical or professional school
- Indiana University School Of Medicine, 1987
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 2,109 in Indiana → Look up another NPI →
Also registered at 3801 Bellemeade Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Joseph Amos, FNPFamily Nurse Practitioner1457729915
- Vijay Bhasin, M.D.Nephrology Physician1780684142
- Ruchi BhatiaInternal Medicine Physician1952591315
- Vishal Bhatia, M.D.Endocrinology, Diabetes & Metabolism Physician1467653402
- Donald Elshoff, MDInternal Medicine Physician1205813698
- Gregory Hayden, MDOphthalmology Physician1568460129
Verify Stephen J. Koewler in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Licensing Board of Indiana
Search for license 01036949ACheck the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
3.4 times the Medicare Part D claims of the average internal medicine physician in 2024
10,815 Medicare Part D claims for 723 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 14% of claims. 319 claims were for opioids.
Most prescribed
- Atorvastatin Calcium808 claims
- Rosuvastatin Calcium429 claims
- Amlodipine Besylate376 claims
- Levothyroxine Sodium360 claims
- Lisinopril250 claims
- Gabapentin246 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.
The MIPS final score for 2023 (Medicare payment program): 95.6 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Bills Medicare through 2 group practices
- Easter Seals Rehabilitation Center IncEvansville, IN
- St Marys Medical Group LLCEvansville, IN
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Stephen J. Koewler among 2,109 internal medicine physician records in Indiana
Stephen J. Koewler, MD is one of 2,109 internal medicine physician records with a practice address in Indiana. 85% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 87% newer
- In a Medicare fileYes · 85% of these records are
- In the CMS Doctors and Clinicians fileYes · 69% of these records are
- Graduated1987 · median 2005 among the 1,448 with a school on file
- Record last updated2022 · 43% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Indiana practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
97 internal medicine physician records list a practice address in Evansville
They are 97 of the 4,352 NPPES records with a practice address in Evansville, and 2,109 internal medicine physician records in Indiana.
All 2,109 in Indiana → Every provider in Evansville → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Michael Allen, MDEvansville, IN 477141366429714
- Robert Cutrell, MDEvansville, IN 477141396789632
- Donald Elshoff, MDEvansville, IN 477141205813698
- Nigel Islam, MDEvansville, IN 477141942240890
- Bryan Laura, MDEvansville, IN 477141346227725
- James Maserejian, MDEvansville, IN 477141326080037
- Divya Patel, MDEvansville, IN 477141184678419
- John Polin, MDEvansville, IN 477141912984295
Common questions
What is Stephen J. Koewler, MD's NPI number?
Stephen J. Koewler, MD's National Provider Identifier (NPI) is 1467439844, issued on Dec 28, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Stephen J. Koewler, MD located?
The NPPES record lists a practice address at 3801 Bellemeade Ave, Evansville, IN, 47714. Phone: (812) 485-1782. Providers update this record themselves, so call before visiting.
How can I verify Stephen J. Koewler, MD's license?
NPPES lists Indiana license number 01036949A, 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 Stephen J. Koewler, MD prescribe under Medicare Part D?
In 2024, Stephen J. Koewler, MD had 10,815 Medicare Part D claims for 723 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is Stephen J. Koewler, MD's MIPS final score?
The 2023 MIPS final score is 95.6 of 100. The average among 454,083 clinicians with a measured score was 83.5.
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.