Leeanne S. Mather, APRN
Family Nurse Practitioner · Portland, ME
Leeanne S. Mather, APRN is a family nurse practitioner with a practice address in Portland, Maine, and NPI 1669722013, issued on Sep 13, 2012. Check the license (Maine CNP251652, as entered in NPPES) with the Maine board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Leeanne S. Mather
- Credential
- APRN
- Primary taxonomy
- Family Nurse Practitioner 363LF0000X
- License numbers
- CNP251652 ME
064302-23 NH
Self-reported in NPPES; status is on the state search - Practice location
- 161 Marginal Way, Portland, ME 04101
- Phone
- (207) 773-7964
- Enumerated
- Sep 13, 2012
- Record last updated
- Dec 30, 2025
- Medicaid ID
- 3078641 NH
- Medicare enrollment
- Enrolled (PECOS I20130117000467); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest family nurse practitioner records → All 1,274 in Maine → Look up another NPI →
Also registered at 161 Marginal Way
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Noemi Baffy, MDGastroenterology Physician1164710075
- Richard Bazarian, MDRetina Specialist (Ophthalmology) Physician1891791455
- Fernando Calmet, M.D.Gastroenterology Physician1659690956
- Melanie Connors, FNPFamily Nurse Practitioner1497881833
- Vicki Cook, NP-CNurse Practitioner1548820384
- John Erkkinen, M.D.Gastroenterology Physician1154429918
Verify Leeanne S. Mather in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Maine board licenses this profession
Search for license CNP251652Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
27% fewer Medicare Part D claims than the average family nurse practitioner in 2024
956 Medicare Part D claims for 305 beneficiaries, against an average of 1,305 among the 140,557 providers of this specialty who prescribed in Part D. Brand-name drugs were 16% of claims.
Most prescribed
- Omeprazole219 claims
- Pantoprazole Sodium141 claims
- Famotidine78 claims
- Linzess50 claims
- Mesalamine39 claims
- Dicyclomine Hcl37 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.
The MIPS final score for 2023 (Medicare payment program): 83.6 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $24.30
1 payment: food and beverage; the largest payer was Abbvie Inc. The 99,489 providers of this specialty with any payment received $650.95 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through 2 group practices
- Core Physicians LLCExeter, NH
- Portland Gastroenterology Associates PAPortland, ME
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Leeanne S. Mather among 1,274 family nurse practitioner records in Maine
Leeanne S. Mather, APRN is one of 1,274 family 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 2012, is newer than 33% of them.
- NPI issued2012 · 33% of these records are older, 63% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileYes · 64% of these records are
- Graduated2012 · median 2018 among the 811 with a school on file
- Record last updated2025 · 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 Maine practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
135 family nurse practitioner records list a practice address in Portland
They are 135 of the 6,022 NPPES records with a practice address in Portland, and 1,274 family nurse practitioner records in Maine.
All 1,274 in Maine → Every provider in Portland → Family Nurse Practitioner nationwide →
The 8 family nurse practitioner records with the nearest ZIP codes
- Kathleen Brown, ANPPortland, ME 041011114020179
- Stephanie Chin, FNP-BC, APRN-CNPPortland, ME 041011447303961
- Melanie Connors, FNPPortland, ME 041011497881833
- Kristen Ellensohn, APRN FNPPortland, ME 041011689618563
- Carol Freshley, FNPPortland, ME 041011043652779
- Katherine Gilbert, FNPPortland, ME 041011154390847
- Dale Harrison, FNPPortland, ME 041011467574772
- Amy Hinshaw, FNPPortland, ME 041011659616159
Common questions
What is Leeanne S. Mather, APRN's NPI number?
Leeanne S. Mather, APRN's National Provider Identifier (NPI) is 1669722013, issued on Sep 13, 2012. An NPI identifies a provider in billing; it is not a license.
Where is Leeanne S. Mather, APRN located?
The NPPES record lists a practice address at 161 Marginal Way, Portland, ME, 04101. Phone: (207) 773-7964. Providers update this record themselves, so call before visiting.
How can I verify Leeanne S. Mather, APRN's license?
NPPES lists Maine license number CNP251652, as entered by the provider. Search the Maine board that licenses this profession; the NPPES record confirms identity only.
How much does Leeanne S. Mather, APRN prescribe under Medicare Part D?
In 2024, Leeanne S. Mather, APRN had 956 Medicare Part D claims for 305 beneficiaries; the average among family nurse practitioner prescribers was 1,305. Part D covers Medicare prescriptions only.
What is Leeanne S. Mather, APRN's MIPS final score?
The 2023 MIPS final score is 83.6 of 100. The average among 454,083 clinicians with a measured score was 83.5.
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.