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

Jonathan Michael Claassen, MD

Individual provider Anesthesiology Physician · NPI 1780799114

Jonathan Michael Claassen, MD is an Anesthesiology in Medford, Oregon. Graduated from University of North Carolina at Chapel Hill School of Medicine in 2002, 24 years ago. Practices with Anesthesia Associates of Medford PC, a 47-clinician group and accepts Medicare assignment. Licensed in California and Oregon.

Years since qualifying
24
Trained at
University of North Carolina at Chapel Hill School of Medicine
Licensed in
CA, OR
In the registry since
2006
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

842 E Main St
Medford, OR 97504-7134
Phone: (541) 773-7273
Fax: (541) 773-2027
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Anesthesiology Physician (primary) Taxonomy 207L00000X · Licence MD29027 (OR)
Anesthesiology Physician Taxonomy 207L00000X · Licence A87730 (CA)

Record details

NPI number1780799114
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedAugust 19, 2006
Last updated in NPPESJanuary 6, 2012
Mailing addressPo Box 1705, Medford, OR 97501-0132

Medicare enrollment

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

Medicare specialtyANESTHESIOLOGY
Medical schoolUNIVERSITY OF NORTH CAROLINA AT CHAPEL HILL SCHOOL OF MEDICINE
Graduated 2002 (24 years in practice)
Group practice Anesthesia Associates Of Medford Pc — 47 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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