Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Sidney L I Cassell, MD

Individual provider Rheumatology Physician · NPI 1376614107

Sidney L I Cassell, MD is a Rheumatology in Eugene, Oregon. Graduated from Washington University School of Medicine in 1971, 55 years ago. Practices with Drs Cassell and Boren PC, a 3-clinician group and accepts Medicare assignment. Licensed in Oregon.

Years since qualifying
55
Trained at
Washington University School of Medicine
Licensed in
OR
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

132 E Broadway Ste 830
Eugene, OR 97401-3160
Phone: (541) 687-0816
Fax: (541) 687-1086
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Rheumatology Physician (primary) Taxonomy 207RR0500X · Licence MD11360 (OR)

Record details

NPI number1376614107
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedNovember 13, 2006
Last updated in NPPESJuly 13, 2010

Medicare enrollment

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

Medicare specialtyRHEUMATOLOGY
Medical schoolWASHINGTON UNIVERSITY SCHOOL OF MEDICINE
Graduated 1971 (55 years in practice)
Group practice Drs Cassell And Boren Pc — 3 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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