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

Dr. Ladonna Mae Johnson, DO

Individual provider Family Medicine Physician · NPI 1124103445

Dr. Ladonna Mae Johnson, DO is a Family Medicine Physician in Corvallis, Oregon. Licensed in California and Oregon. Registered with an NPI since 2006.

Licensed in
CA, OR
In the registry since
2006
Specialties on file
2
What do these letters mean?
DO — Doctor of Osteopathic Medicine
A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.

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Practice location Address checks out

201 Plageman Bldg Oregon State University - Student Health
Corvallis, OR 97331-5801
Phone: (541) 737-3106
Fax: (541) 737-4530
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Specialties & licences

Family Medicine Physician (primary) Taxonomy 207Q00000X · Licence DO19146 (OR)
Family Medicine Physician Taxonomy 207Q00000X · Licence 20A5511 (CA)

Record details

NPI number1124103445
Entity typeIndividual (Type 1)
GenderFemale
Credentials DO
Sole proprietorNo
NPI enumeratedOctober 26, 2006
Last updated in NPPESAugust 5, 2015
Mailing address201 Plageman Bldg, Oregon State University - Student Health, Corvallis, OR 97331-5801

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