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

Eric S Cassidy, MD

Individual provider Emergency Medicine Physician · NPI 1982647830

Eric S Cassidy, MD practises Emergency Medicine in Twin Falls, Idaho. Graduated from At Still University of Health Sciences, College of Osteo Med, Kirksville in 1997, 29 years ago. Practices with St Lukes Clinic LLC, a 310-clinician group and accepts Medicare assignment. Licensed in Idaho.

Years since qualifying
29
Trained at
At Still University of Health Sciences, College of Osteo Med, Kirksville
Licensed in
ID
In the registry since
2006
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

650 Addison Ave W
Twin Falls, ID 83301-5444
Phone: (208) 732-3429
Fax: (208) 732-3220
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Emergency Medicine Physician (primary) Taxonomy 207P00000X · Licence O-235 (ID)

Record details

NPI number1982647830
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJune 14, 2006
Last updated in NPPESJuly 13, 2026

Medicare enrollment

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

Medicare specialtyEMERGENCY MEDICINE
Medical schoolAT STILL UNIVERSITY OF HEALTH SCIENCES, COLLEGE OF OSTEO MED, KIRKSVILLE
Graduated 1997 (29 years in practice)
Group practice St Lukes Clinic Llc — 310 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 patients388
Services billed 446 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 St Lukes Clinic LLC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 310 clinicians in the practice; 12 are shown here.

Other providers in Twin Falls