Glenna Claire Brennan, CRNP
Adult Health Nurse Practitioner · Brunswick, ME
Glenna Claire Brennan, CRNP is an adult health nurse practitioner with a practice address in Brunswick, Maine, and NPI 1770052680, issued on Nov 20, 2018. Check the license (Maine CNP201435, as entered in NPPES) with the Maine board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Glenna Claire Brennan
- Credential
- CRNP
- Primary taxonomy
- Adult Health Nurse Practitioner 363LA2200X
- License number
- CNP201435 ME
Self-reported in NPPES; status is on the state search - Practice location
- 121 Medical Center Dr Ste 3400, Brunswick, ME 04011
- Phone
- (207) 406-7300
- Enumerated
- Nov 20, 2018
- Record last updated
- Feb 11, 2026
- Fax
- (207) 835-4736
- Medicare enrollment
- Enrolled (PECOS I20210205000515); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest adult health nurse practitioner records → All 133 in Maine → Look up another NPI →
Also registered at 121 Medical Center Dr Ste 3400
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Donna Rodriguez, PASurgical Physician Assistant1669018529
- Laura Smith-Tucker, FNPFamily Nurse Practitioner1912167347
Verify Glenna Claire Brennan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Maine board licenses this profession
Search for license CNP201435Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
15% more Medicare Part D claims than the average adult health nurse practitioner in 2024
1,474 Medicare Part D claims for 248 beneficiaries, against an average of 1,280 among the 16,937 providers of this specialty who prescribed in Part D. Brand-name drugs were 73% of claims.
Most prescribed
- Ozempic341 claims
- Mounjaro156 claims
- Lantus Solostar114 claims
- Metformin Hcl Er82 claims
- Trulicity56 claims
- Novolog Flexpen49 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
- MainehealthScarborough, ME
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Glenna Claire Brennan among 133 adult health nurse practitioner records in Maine
Glenna Claire Brennan, CRNP is one of 133 adult health nurse practitioner records with a practice address in Maine. 63% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2018, is newer than 86% of them.
- NPI issued2018 · 86% of these records are older, 12% newer
- In a Medicare fileYes · 63% of these records are
- In the CMS Doctors and Clinicians fileYes · 44% of these records are
- Graduated2017 · median 2010 among the 59 with a school on file
- Record last updated2026 · 64% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LA2200X and a Maine practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Adult Health Nurse Practitioner providers in Maine
There are 133 adult health nurse practitioner records in Maine.
All 133 in Maine → Every provider in Brunswick → Adult Health Nurse Practitioner nationwide →
The 8 adult health nurse practitioner records with the nearest ZIP codes
- Karmen Blackstone, A.N.P.Brunswick, ME 040111962471888
- Margaret Chapin, ANPBrunswick, ME 040111750724936
- Sandra Hayes, NPBrunswick, ME 040111053416446
- Margaret Kelley, MSN, APRN-CNPBrunswick, ME 040111659521714
- Doreen Siddall, NPBrunswick, ME 040111992004618
- Lisa Arsenault, ANPBiddeford, ME 040051366428435
- Sally Carpenter, N.P.Biddeford, ME 040051245500420
- Linda Sancetta, NPBiddeford, ME 040051194313841
Common questions
What is Glenna Claire Brennan, CRNP's NPI number?
Glenna Claire Brennan, CRNP's National Provider Identifier (NPI) is 1770052680, issued on Nov 20, 2018. An NPI identifies a provider in billing; it is not a license.
Where is Glenna Claire Brennan, CRNP located?
The NPPES record lists a practice address at 121 Medical Center Dr Ste 3400, Brunswick, ME, 04011. Phone: (207) 406-7300. Providers update this record themselves, so call before visiting.
How can I verify Glenna Claire Brennan, CRNP's license?
NPPES lists Maine license number CNP201435, as entered by the provider. Search the Maine board that licenses this profession; the NPPES record confirms identity only.
How much does Glenna Claire Brennan, CRNP prescribe under Medicare Part D?
In 2024, Glenna Claire Brennan, CRNP had 1,474 Medicare Part D claims for 248 beneficiaries; the average among adult health nurse practitioner prescribers was 1,280. Part D covers Medicare prescriptions only.
What is Glenna Claire Brennan, CRNP'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.