Kathleen Mary McMahon-Brown, MSN, APRN
Family Nurse Practitioner · New Haven, CT
Kathleen Mary McMahon-Brown, MSN, APRN is a family nurse practitioner with a practice address in New Haven, Connecticut, and NPI 1679199095, issued on Jun 22, 2020. Check the license (Connecticut 8801, as entered in NPPES) with the Connecticut board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Kathleen Mary McMahon-Brown
- Credential
- MSN, APRN
- Primary taxonomy
- Family Nurse Practitioner 363LF0000X
- License number
- 8801 CT
Self-reported in NPPES; status is on the state search - Practice location
- 400 Columbus Ave, New Haven, CT 06519
- Phone
- (203) 503-3581
- Enumerated
- Jun 22, 2020
- Record last updated
- Jun 22, 2020 (not updated in 6 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20200810001268); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest family nurse practitioner records → All 2,669 in Connecticut → Look up another NPI →
Also registered at 400 Columbus Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Sarah Ardito, LCSWClinical Social Worker1548610827
- Jenifer Baldwin, LCSWCounselor1508168691
- Nicole Beall, LPCProfessional Counselor1043615818
Verify Kathleen Mary McMahon-Brown in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Connecticut board licenses this profession
Search for license 8801Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
79% fewer Medicare Part D claims than the average family nurse practitioner in 2024
277 Medicare Part D claims for 93 beneficiaries, against an average of 1,305 among the 140,557 providers of this specialty who prescribed in Part D.
Most prescribed
- Atorvastatin Calcium15 claims
- Amlodipine Besylate12 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): 93.3 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 2 group practices
- Cornell Scott Hill Health CorporationNew Haven, CT
- Rehabilitation Associates IncFairfield, CT
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Kathleen Mary McMahon-Brown among 2,669 family nurse practitioner records in Connecticut
Kathleen Mary McMahon-Brown, MSN, APRN is one of 2,669 family nurse practitioner records with a practice address in Connecticut. 76% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2020, is newer than 59% of them.
- NPI issued2020 · 59% of these records are older, 35% newer
- In a Medicare fileYes · 76% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated2019 · median 2018 among the 1,664 with a school on file
- Record last updated2020 · 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 363LF0000X and a Connecticut practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
239 family nurse practitioner records list a practice address in New Haven
They are 239 of the 9,793 NPPES records with a practice address in New Haven, and 2,669 family nurse practitioner records in Connecticut.
All 2,669 in Connecticut → Every provider in New Haven → Family Nurse Practitioner nationwide →
The 8 family nurse practitioner records with the nearest ZIP codes
- Mary Ann Fieffer, APRN, RNNew Haven, CT 065191932147675
- Mary Fusi, APRNNew Haven, CT 065191295855518
- Shelley Hawkins, DSN, APRN-BC, FAANPNew Haven, CT 065191023232139
- Robert Hill, APRNNew Haven, CT 065191528036944
- Marybeth Holak, ARNPNew Haven, CT 065191518067230
- Jennifer Hughes, APRNNew Haven, CT 065191205903416
- Erin Kampa, APRN-BCNew Haven, CT 065191891898672
- Thomas Kimberly, APRN, MSNNew Haven, CT 065191316026115
Common questions
What is Kathleen Mary McMahon-Brown, MSN, APRN's NPI number?
Kathleen Mary McMahon-Brown, MSN, APRN's National Provider Identifier (NPI) is 1679199095, issued on Jun 22, 2020. An NPI identifies a provider in billing; it is not a license.
Where is Kathleen Mary McMahon-Brown, MSN, APRN located?
The NPPES record lists a practice address at 400 Columbus Ave, New Haven, CT, 06519. Phone: (203) 503-3581. Providers update this record themselves, so call before visiting.
How can I verify Kathleen Mary McMahon-Brown, MSN, APRN's license?
NPPES lists Connecticut license number 8801, as entered by the provider. Search the Connecticut board that licenses this profession; the NPPES record confirms identity only.
How much does Kathleen Mary McMahon-Brown, MSN, APRN prescribe under Medicare Part D?
In 2024, Kathleen Mary McMahon-Brown, MSN, APRN had 277 Medicare Part D claims for 93 beneficiaries; the average among family nurse practitioner prescribers was 1,305. Part D covers Medicare prescriptions only.
What is Kathleen Mary McMahon-Brown, MSN, APRN's MIPS final score?
The 2023 MIPS final score is 93.3 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.