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

Mr. John R Ladd, MD

Individual provider Rheumatology Physician · NPI 1164471967

Mr. John R Ladd, MD is a Rheumatology Physician in Corvallis, 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.

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Practice location Address checks out

3680 NW Samaritan Dr
Corvallis, OR 97330-3737
Phone: (541) 754-1150
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Rheumatology Physician (primary) Taxonomy 207RR0500X · Licence MD07353 (OR)

Record details

NPI number1164471967
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMay 9, 2006
Last updated in NPPESJanuary 6, 2009

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