Katherine J. Letourneau, AGNP-BC
Primary Care Nurse Practitioner · South Portland, ME
Katherine J. Letourneau, AGNP-BC is a primary care nurse practitioner with a practice address in South Portland, Maine, and NPI 1295136356, issued on Sep 9, 2014. Check the license (Maine CNP141090, as entered in NPPES) with the Maine board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Katherine J. Letourneau
- Credential
- AGNP-BC
- Primary taxonomy
- Primary Care Nurse Practitioner 363LP2300X
- License numbers
- CNP141090 ME
RN63158 ME
Self-reported in NPPES; status is on the state search - Practice location
- 100 Brickhill Ave Ste 304, South Portland, ME 04106
- Phone
- (207) 761-4700
- Enumerated
- Sep 9, 2014
- Record last updated
- Aug 16, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20161027001679); may accept Medicare assignment
- Entity
- Type 1 · individual
8 nearest primary care nurse practitioner records → All 53 in Maine → Look up another NPI →
Also registered at 100 Brickhill Ave Ste 304
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Caitlin Kadnar, LCPC, NCCMental Health Counselor1972925717
- Erica Kramer, FNP-BCFamily Nurse Practitioner1932757705
Verify Katherine J. Letourneau in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Maine board licenses this profession
Search for license CNP141090Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
48% fewer Medicare Part D claims than the average primary care nurse practitioner in 2024
779 Medicare Part D claims for 61 beneficiaries, against an average of 1,492 among the 5,992 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims. 48 claims were for opioids.
Most prescribed
- Levothyroxine Sodium53 claims
- Rosuvastatin Calcium47 claims
- Atorvastatin Calcium40 claims
- Lisinopril38 claims
- Losartan Potassium33 claims
- Amlodipine Besylate31 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.
Katherine J. Letourneau among 53 primary care nurse practitioner records in Maine
Katherine J. Letourneau, AGNP-BC is one of 53 primary care nurse practitioner records with a practice address in Maine. 77% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2014, is newer than 17% of them.
- NPI issued2014 · 17% of these records are older, 77% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated2014 · median 2020 among the 33 with a school on file
- Record last updated2021 · 43% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LP2300X and a Maine practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Primary Care Nurse Practitioner providers in Maine
There are 53 primary care nurse practitioner records in Maine.
All 53 in Maine → Every provider in South Portland → Primary Care Nurse Practitioner nationwide →
The 8 primary care nurse practitioner records with the nearest ZIP codes
- Candice Ellis, APRNSouth Portland, ME 041061922531011
- Megan Black, APRN, AGNP-CPortland, ME 041011982056347
- Kimberly Qirushi, APRN-CNPPortland, ME 041011720749906
- Caroline Wilmot, CNPPortland, ME 041011578085544
- Susan Caplan, NPYarmouth, ME 040961801250279
- Patricia Leavitt, M.S., F.N.P.Buxton, ME 040931467469841
- Rebecca Holdsworth, FNP-BCWells, ME 040901770250474
- Laura Hill, CNPSpringvale, ME 040831326088220
Common questions
What is Katherine J. Letourneau, AGNP-BC's NPI number?
Katherine J. Letourneau, AGNP-BC's National Provider Identifier (NPI) is 1295136356, issued on Sep 9, 2014. An NPI identifies a provider in billing; it is not a license.
Where is Katherine J. Letourneau, AGNP-BC located?
The NPPES record lists a practice address at 100 Brickhill Ave Ste 304, South Portland, ME, 04106. Phone: (207) 761-4700. Providers update this record themselves, so call before visiting.
How can I verify Katherine J. Letourneau, AGNP-BC's license?
NPPES lists Maine license number CNP141090, as entered by the provider. Search the Maine board that licenses this profession; the NPPES record confirms identity only.
How much does Katherine J. Letourneau, AGNP-BC prescribe under Medicare Part D?
In 2024, Katherine J. Letourneau, AGNP-BC had 779 Medicare Part D claims for 61 beneficiaries; the average among primary care nurse practitioner prescribers was 1,492. 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.