Ladonna Mae Johnson, D.O.
Family Medicine Physician · Corvallis, OR
Ladonna Mae Johnson, D.O. is a family medicine physician with a practice address in Corvallis, Oregon, and NPI 1124103445, issued on Oct 26, 2006. Check the license (Oregon DO19146, as entered in NPPES) on the Oregon Medical Board; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Ladonna Mae Johnson
- Credential
- D.O.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License numbers
- DO19146 OR
20A5511 CA
Self-reported in NPPES; status is on the state search - Practice location
- 201 Plageman Bldg, Corvallis, OR 97331
- Phone
- (541) 737-3106
- Enumerated
- Oct 26, 2006
- Record last updated
- Aug 5, 2015 (not updated in 11 years: call before relying on the address or phone)
- Fax
- (541) 737-4530
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 2,847 in Oregon → Look up another NPI →
Also registered at 201 Plageman Bldg
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Elizabeth Lazaroff, M.D.Psychiatry Physician1447373022
- Jason Morris, PHARMDPharmacist1699296541
Verify Ladonna Mae Johnson in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersOregon Medical Board
Search for license DO19146Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Ladonna Mae Johnson among 2,847 family medicine physician records in Oregon
Ladonna Mae Johnson, D.O. is one of 2,847 family medicine physician records with a practice address in Oregon. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2006, is newer than 9% of them.
- NPI issued2006 · 9% of these records are older, 53% newer
- In a Medicare fileNo · 75% of these records are
- In the CMS Doctors and Clinicians fileNo · 59% of these records are
- Record last updated2015 · 57% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Oregon practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
114 family medicine physician records list a practice address in Corvallis
They are 114 of the 4,096 NPPES records with a practice address in Corvallis, and 2,847 family medicine physician records in Oregon. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 2,847 in Oregon → Every provider in Corvallis → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Shanilka De Soyza, M.D.Corvallis, OR 973311578504957
- Troy Garrett, MDCorvallis, OR 973311538105747
- Elinor Tatham, M.D.Corvallis, OR 973311760435135
- Azeezat AriwoolaCorvallis, OR 973301225826449
- Gulrez Azhar, MDCorvallis, OR 973301265220644
- Maria Giron De Marza, MDCorvallis, OR 973301093504565
- Mary Suzzette Gonzales, MDCorvallis, OR 973301265221618
- Jesus Gordon Agostini, MDCorvallis, OR 973301619764248
Common questions
What is Ladonna Mae Johnson, D.O.'s NPI number?
Ladonna Mae Johnson, D.O.'s National Provider Identifier (NPI) is 1124103445, issued on Oct 26, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Ladonna Mae Johnson, D.O. located?
The NPPES record lists a practice address at 201 Plageman Bldg, Corvallis, OR, 97331. Phone: (541) 737-3106. Providers update this record themselves, so call before visiting.
How can I verify Ladonna Mae Johnson, D.O.'s license?
NPPES lists Oregon license number DO19146, as entered by the provider. Search the Oregon Medical Board at https://www.oregon.gov/OMB/Pages/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.