Mary J. Brennan, APRN-BC
Acute Care Nurse Practitioner · Portland, ME
Mary J. Brennan, APRN-BC is an acute care nurse practitioner with a practice address in Portland, Maine, and NPI 1699782623, issued on Aug 2, 2006. Check the license (Maine CNP211468, as entered in NPPES) with the Maine board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Mary J. Brennan
- Credential
- APRN-BC
- Primary taxonomy
- Acute Care Nurse Practitioner 363LA2100X
- License numbers
- CNP211468 ME
047934-23 NH
Self-reported in NPPES; status is on the state search - Practice location
- 10 Andover RD, Portland, ME 04102
- Phone
- (207) 761-6642
- Enumerated
- Aug 2, 2006
- Record last updated
- Dec 21, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicaid IDs
- 432951999 ME
30347119 NH - Medicare enrollment
- Enrolled (PECOS I20220210000817); accepts Medicare assignment
- Entity
- Type 1 · individual
Also registered at 10 Andover RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Joselyn Abernethy, MSN, ACNP-BCNurse Practitioner1699922492
- Marie Audett, MDColon & Rectal Surgery Physician1891920823
- Thomas Brady, MDSurgery Physician1417035601
- Roy Cobean, MDSurgery Physician1457439663
- Kathreen Lee, MDColon & Rectal Surgery Physician1639304132
- Cathel Macleod, MDColon & Rectal Surgery Physician1851479034
Verify Mary J. 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 CNP211468Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
88% fewer Medicare Part D claims than the average acute care nurse practitioner in 2024
69 Medicare Part D claims for 41 beneficiaries, against an average of 594 among the 13,133 providers of this specialty who prescribed in Part D. 33 claims were for opioids.
Most prescribed
- Oxycodone Hcl15 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).
Industry payments in 2024: $54.97
2 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 10,984 providers of this specialty with any payment received $647.94 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
- MainehealthPortland, ME
- Select Physical Therapy Holdings IncAuburn, ME
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Acute Care Nurse Practitioner providers in Maine
There are 167 acute care nurse practitioner records in Maine.
Other acute care nurse practitioner records in Maine
- Nicole Achorn, AGACNP-BCRockport, ME1326816281
- Angela Amano, NPPortland, ME1720313232
- Brittany Anderson, NPSouth Portland, ME1558859314
- Melissa Asci, APRN-CNPPortland, ME1881483030
- Kelsey AverillLewiston, ME1326796475
- Erin Bacon, AGACNPPortland, ME1760729057
- Kateryna Bagrii, AGACNPPortland, ME1376342816
- Kristina Ballard, DNP, AGACNPBrunswick, ME1992272298
- Hannah BambrickBiddeford, ME1760237937
- Mackenzie Barth, AGACNPBiddeford, ME1912613613
Common questions
What is Mary J. Brennan, APRN-BC's NPI number?
Mary J. Brennan, APRN-BC's National Provider Identifier (NPI) is 1699782623, issued on Aug 2, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Mary J. Brennan, APRN-BC located?
The NPPES record lists a practice address at 10 Andover RD, Portland, ME, 04102. Phone: (207) 761-6642. Providers update this record themselves, so call before visiting.
How can I verify Mary J. Brennan, APRN-BC's license?
NPPES lists Maine license number CNP211468, as entered by the provider. Search the Maine board that licenses this profession; the NPPES record confirms identity only.
How much does Mary J. Brennan, APRN-BC prescribe under Medicare Part D?
In 2024, Mary J. Brennan, APRN-BC had 69 Medicare Part D claims for 41 beneficiaries; the average among acute care nurse practitioner prescribers was 594. Part D covers Medicare prescriptions only.
What is Mary J. Brennan, APRN-BC'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.