Leigh Britain Thornton, FNP-C
Family Nurse Practitioner · Portland, OR
Leigh Britain Thornton, FNP-C is a family nurse practitioner with a practice address in Portland, Oregon, and NPI 1962635979, issued on Aug 25, 2009. Check the license (Oregon 200950123NP, as entered in NPPES) with the Oregon board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Leigh Britain Thornton
- Credential
- FNP-C
- Primary taxonomy
- Family Nurse Practitioner 363LF0000X
- License number
- 200950123NP OR
Self-reported in NPPES; status is on the state search - Practice location
- 4805 NE Glisan St Ste 6N40, Portland, OR 97213
- Phone
- (503) 215-7230
- Enumerated
- Aug 25, 2009
- Record last updated
- Feb 16, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20251104004480); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest family nurse practitioner records → All 2,384 in Oregon → Look up another NPI →
Also registered at 4805 NE Glisan St Ste 6N40
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- William Chapin, MDEndocrinology, Diabetes & Metabolism Physician1083653679
- Nicole Crotty, REGISTERED DIETITIANRegistered Dietitian1972075687
- Katie Daneshvar, MS, RD, LDRegistered Dietitian1295470938
- Lyn Dobrunick, FNPFamily Nurse Practitioner1013909142
Verify Leigh Britain Thornton in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Oregon board licenses this profession
Search for license 200950123NPCheck the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
92% fewer Medicare Part D claims than the average family nurse practitioner in 2024
98 Medicare Part D claims for 12 beneficiaries, against an average of 1,305 among the 140,557 providers of this specialty who prescribed in Part D. Brand-name drugs were 71% of claims.
Most prescribed
- Mounjaro31 claims
- Ozempic25 claims
- Wegovy14 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Leigh Britain Thornton among 2,384 family nurse practitioner records in Oregon
Leigh Britain Thornton, FNP-C is one of 2,384 family nurse practitioner records with a practice address in Oregon. 73% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2009, is newer than 30% of them.
- NPI issued2009 · 30% of these records are older, 68% newer
- In a Medicare fileYes · 73% of these records are
- In the CMS Doctors and Clinicians fileYes · 58% of these records are
- Graduated2009 · median 2017 among the 1,390 with a school on file
- Record last updated2021 · 46% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LF0000X and a Oregon practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
591 family nurse practitioner records list a practice address in Portland
They are 591 of the 42,088 NPPES records with a practice address in Portland, and 2,384 family nurse practitioner records in Oregon.
All 2,384 in Oregon → Every provider in Portland → Family Nurse Practitioner nationwide →
The 8 family nurse practitioner records with the nearest ZIP codes
- Liana Corliss, N.P.Portland, OR 972131952376451
- Lyn Dobrunick, FNPPortland, OR 972131013909142
- Melissa Federspiel, FNPPortland, OR 972131881676641
- Dennis Grey, F.N.P.Portland, OR 972131851303291
- Roxanne Griswold, FNPPortland, OR 972131205828936
- Caryl Kenworth, M.S.N., F.N.P.Portland, OR 972131396757662
- Melissa Kilian, FNPPortland, OR 972131821054024
- Daniel Leone, NP-CPortland, OR 972131962559112
Common questions
What is Leigh Britain Thornton, FNP-C's NPI number?
Leigh Britain Thornton, FNP-C's National Provider Identifier (NPI) is 1962635979, issued on Aug 25, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Leigh Britain Thornton, FNP-C located?
The NPPES record lists a practice address at 4805 NE Glisan St Ste 6N40, Portland, OR, 97213. Phone: (503) 215-7230. Providers update this record themselves, so call before visiting.
How can I verify Leigh Britain Thornton, FNP-C's license?
NPPES lists Oregon license number 200950123NP, as entered by the provider. Search the Oregon board that licenses this profession; the NPPES record confirms identity only.
How much does Leigh Britain Thornton, FNP-C prescribe under Medicare Part D?
In 2024, Leigh Britain Thornton, FNP-C had 98 Medicare Part D claims for 12 beneficiaries; the average among family nurse practitioner prescribers was 1,305. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. 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.