Mary Ann Harmon, APRN
Nurse Practitioner · North Haven, CT
Mary Ann Harmon, APRN is a nurse practitioner with a practice address in North Haven, Connecticut, and NPI 1477044824, issued on May 22, 2018. Check the license (Connecticut 7265, as entered in NPPES) with the Connecticut board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Mary Ann Harmon
- Credential
- APRN
- Primary taxonomy
- Nurse Practitioner 363L00000X
- License number
- 7265 CT
Self-reported in NPPES; status is on the state search - Practice location
- 31 Broadway, North Haven, CT 06473
- Phone
- (203) 234-7460
- Enumerated
- May 22, 2018
- Record last updated
- May 22, 2018 (not updated in 8 years: call before relying on the address or phone)
- Fax
- (203) 239-3047
- Medicare enrollment
- Enrolled (PECOS I20180621001289); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest nurse practitioner records → All 922 in Connecticut → Look up another NPI →
Also registered at 31 Broadway
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Mary Ann Harmon in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Connecticut board licenses this profession
Search for license 7265Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
89% fewer Medicare Part D claims than the average nurse practitioner in 2024
119 Medicare Part D claims for 35 beneficiaries, against an average of 1,109 among the 54,319 providers of this specialty who prescribed in Part D.
Most prescribed
- Rosuvastatin Calcium50 claims
- Metformin Hcl11 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 practice group's MIPS final score for 2023 (Medicare payment program): 73.6 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. 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, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Yale UniversityNew Haven, CT
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mary Ann Harmon among 922 nurse practitioner records in Connecticut
Mary Ann Harmon, APRN is one of 922 nurse practitioner records with a practice address in Connecticut. 72% 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 55% of them.
- NPI issued2018 · 55% of these records are older, 42% newer
- In a Medicare fileYes · 72% of these records are
- In the CMS Doctors and Clinicians fileYes · 57% of these records are
- Graduated2017 · median 2018 among the 522 with a school on file
- Record last updated2018 · 51% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363L00000X and a Connecticut practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
12 nurse practitioner records list a practice address in North Haven
They are 12 of the 539 NPPES records with a practice address in North Haven, and 922 nurse practitioner records in Connecticut.
All 922 in Connecticut → Every provider in North Haven → Nurse Practitioner nationwide →
The 8 nurse practitioner records with the nearest ZIP codes
- Sara Anastasio, APRNNorth Haven, CT 064731659993798
- Sierra Boulem, FNPNorth Haven, CT 064731326780099
- Audra Catania, APRNNorth Haven, CT 064731871229237
- Danielle Fresen, APRNNorth Haven, CT 064731922606086
- Kelly Kouzelis, APRNNorth Haven, CT 064731730864729
- Stephen Morley, APRNNorth Haven, CT 064731316291396
- Katherine Morrison, APRNNorth Haven, CT 064731013668409
- Marci Panapada, APRNNorth Haven, CT 064731093887994
Common questions
What is Mary Ann Harmon, APRN's NPI number?
Mary Ann Harmon, APRN's National Provider Identifier (NPI) is 1477044824, issued on May 22, 2018. An NPI identifies a provider in billing; it is not a license.
Where is Mary Ann Harmon, APRN located?
The NPPES record lists a practice address at 31 Broadway, North Haven, CT, 06473. Phone: (203) 234-7460. Providers update this record themselves, so call before visiting.
How can I verify Mary Ann Harmon, APRN's license?
NPPES lists Connecticut license number 7265, as entered by the provider. Search the Connecticut board that licenses this profession; the NPPES record confirms identity only.
How much does Mary Ann Harmon, APRN prescribe under Medicare Part D?
In 2024, Mary Ann Harmon, APRN had 119 Medicare Part D claims for 35 beneficiaries; the average among nurse practitioner prescribers was 1,109. Part D covers Medicare prescriptions only.
What is Mary Ann Harmon, APRN's MIPS final score?
The 2023 MIPS final score is 73.6 of 100, reported for the practice group. 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.