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

Dr. James William Theen, MD

Individual provider Endocrinology, Diabetes & Metabolism Physician · NPI 1205863990

Dr. James William Theen, MD is an Endocrinology, Diabetes & Metabolism Physician in Medford, Oregon. Licensed in Oregon. Registered with an NPI since 2006.

Licensed in
OR
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

555 Black Oak Dr
Medford, OR 97504-8447
Phone: (541) 734-3430
Fax: (541) 734-3638
Show map & directions

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

Specialties & licences

Endocrinology, Diabetes & Metabolism Physician (primary) Taxonomy 207RE0101X · Licence MD16267 (OR)

Record details

NPI number1205863990
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJune 27, 2006
Last updated in NPPESJuly 19, 2017

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