Kelly E W Ernst, FNP
Family Nurse Practitioner · South Portland, ME
Kelly E W Ernst, FNP is a family nurse practitioner with a practice address in South Portland, Maine, and NPI 1558695783, issued on Sep 21, 2009. Check the license (Maine CNP111042, as entered in NPPES) with the Maine board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Kelly E W Ernst
- Credential
- FNP
- Primary taxonomy
- Family Nurse Practitioner 363LF0000X
- License numbers
- CNP111042 ME
RN62266 ME
Self-reported in NPPES; status is on the state search - Practice location
- 100 Brickhill Ave, South Portland, ME 04106
- Phone
- (207) 773-1728
- Enumerated
- Sep 21, 2009
- Record last updated
- Apr 8, 2014 (not updated in 12 years: call before relying on the address or phone)
- Fax
- (207) 772-4062
- Medicaid ID
- 1558695783 ME
- Medicare enrollment
- Enrolled (PECOS I20110927000303); 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 100 Brickhill Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Kelly E W Ernst in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Maine board licenses this profession
Search for license CNP111042Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
71% fewer Medicare Part D claims than the average family nurse practitioner in 2024
381 Medicare Part D claims for 179 beneficiaries, against an average of 1,305 among the 140,557 providers of this specialty who prescribed in Part D. Brand-name drugs were 12% of claims.
Most prescribed
- Tamsulosin Hcl93 claims
- Finasteride45 claims
- Myrbetriq33 claims
- Cephalexin21 claims
- Doxycycline Hyclate21 claims
- Sulfamethoxazole-Trimethoprim21 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): 98.1 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).
Bills Medicare through one group practice
- MainehealthSouth Portland, ME
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Kelly E W Ernst among 1,274 family nurse practitioner records in Maine
Kelly E W Ernst, FNP 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 2009, is newer than 27% of them.
- NPI issued2009 · 27% of these records are older, 71% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileYes · 64% of these records are
- Graduated2009 · median 2018 among the 811 with a school on file
- Record last updated2014 · 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).
46 family nurse practitioner records list a practice address in South Portland
They are 46 of the 1,143 NPPES records with a practice address in South Portland, and 1,274 family nurse practitioner records in Maine.
All 1,274 in Maine → Every provider in South Portland → Family Nurse Practitioner nationwide →
The 8 family nurse practitioner records with the nearest ZIP codes
- Pamela Argereow, FNPSouth Portland, ME 041061013087758
- Lisa Bulthuis, NPSouth Portland, ME 041061689636607
- Mary Delois, RN,MSN,F.N.P.-CSouth Portland, ME 041061003963232
- Sarah Fuhrman, FNPSouth Portland, ME 041061053380741
- Jaime Hare, FNP-CSouth Portland, ME 041061679543219
- Duncan Hopkins, MS, FNP-CSouth Portland, ME 041061033233754
- Lynn Howard, APRN CNPSouth Portland, ME 041061184624397
- Melissa Libby, FNPSouth Portland, ME 041061033170709
Common questions
What is Kelly E W Ernst, FNP's NPI number?
Kelly E W Ernst, FNP's National Provider Identifier (NPI) is 1558695783, issued on Sep 21, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Kelly E W Ernst, FNP located?
The NPPES record lists a practice address at 100 Brickhill Ave, South Portland, ME, 04106. Phone: (207) 773-1728. Providers update this record themselves, so call before visiting.
How can I verify Kelly E W Ernst, FNP's license?
NPPES lists Maine license number CNP111042, as entered by the provider. Search the Maine board that licenses this profession; the NPPES record confirms identity only.
How much does Kelly E W Ernst, FNP prescribe under Medicare Part D?
In 2024, Kelly E W Ernst, FNP had 381 Medicare Part D claims for 179 beneficiaries; the average among family nurse practitioner prescribers was 1,305. Part D covers Medicare prescriptions only.
What is Kelly E W Ernst, FNP's MIPS final score?
The 2023 MIPS final score is 98.1 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.