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

Dr. Ryan P Duffey, MD

Individual provider Emergency Medicine Physician · NPI 1548267321

Dr. Ryan P Duffey, MD practises Internal Medicine in Evansville, Indiana. Graduated from Indiana University School of Medicine in 1997, 29 years ago. Practices with St Marys Medical Group LLC, a 228-clinician group and accepts Medicare assignment. Licensed in Indiana.

Years since qualifying
29
Trained at
Indiana University School of Medicine
Licensed in
IN
In the registry since
2005
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

3700 Washington Ave
Evansville, IN 47750-0001 Not confirmed with CMS for 13 years — call before visiting
Phone: (812) 485-7040
Fax: (812) 485-7042
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 01053022A (IN)
Emergency Medicine Physician Taxonomy 207P00000X · Licence 01053022A (IN)

Record details

NPI number1548267321
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJuly 7, 2005
Last updated in NPPESApril 11, 2013

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolINDIANA UNIVERSITY SCHOOL OF MEDICINE
Graduated 1997 (29 years in practice)
Group practice St Marys Medical Group Llc — 228 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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 patients164
Services billed 436 a service is one billed item, such as a visit, a test or a procedure
Average patient age74

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.

  • Ascension St Vincent Evansville Hospital · Evansville, IN

Colleagues at St Marys Medical Group LLC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 228 clinicians in the practice; 12 are shown here.

Other providers in Evansville