Heather Demassa, APRN, RN, IBCLC
Family Nurse Practitioner · Darien, CT
Heather Demassa, APRN, RN, IBCLC is a family nurse practitioner with a practice address in Darien, Connecticut, and NPI 1609388560, issued on Nov 1, 2017. Check the license (Connecticut 7134, as entered in NPPES) with the Connecticut board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Heather Demassa
- Credential
- APRN, RN, IBCLC
- Primary taxonomy
- Family Nurse Practitioner 363LF0000X
- License numbers
- 7134 CT
89408 CT
Self-reported in NPPES; status is on the state search - Practice location
- 36 Grove Street, Darien, CT 06840
- Phone
- (203) 276-4282
- Enumerated
- Nov 1, 2017
- Record last updated
- Jun 12, 2024
- Fax
- (203) 276-8585
- Entity
- Type 1 · individual
8 nearest family nurse practitioner records → All 2,669 in Connecticut → Look up another NPI →
Verify Heather Demassa in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Connecticut board licenses this profession
Search for license 7134Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
93% fewer Medicare Part D claims than the average family nurse practitioner in 2024
93 Medicare Part D claims for 37 beneficiaries, against an average of 1,305 among the 140,557 providers of this specialty who prescribed in Part D. Brand-name drugs were 14% of claims.
Most prescribed
- Metronidazole15 claims
- Estradiol12 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): 79.1 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).
Industry payments in 2024: $38.58
2 payments; by number, the most common kind was food and beverage; the largest payer was Sage Therapeutics, Inc. The 99,489 providers of this specialty with any payment received $650.95 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.
Heather Demassa among 2,669 family nurse practitioner records in Connecticut
Heather Demassa, APRN, RN, IBCLC 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 2017, is newer than 41% of them.
- NPI issued2017 · 41% of these records are older, 54% newer
- In a Medicare fileYes · 76% of these records are
- In the CMS Doctors and Clinicians fileNo · 62% of these records are
- Record last updated2024 · 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).
8 family nurse practitioner records list a practice address in Darien
They are 8 of the 380 NPPES records with a practice address in Darien, and 2,669 family nurse practitioner records in Connecticut.
All 2,669 in Connecticut → Every provider in Darien → Family Nurse Practitioner nationwide →
The 8 family nurse practitioner records with the nearest ZIP codes
- Casey Doyle, APRNGreenwich, CT 068311184091217
- Avigail ItzkowitzGreenwich, CT 068311760094437
- Elisa O'Brien, APRNGreenwich, CT 068311912262973
- Tara Robertson, APRNGreenwich, CT 068311679069561
- Latasha Shaw, APRNGreenwich, CT 068311841069325
- Amy AkerleyGreenwich, CT 068301477438315
- Mary Boudreau, APRNNorwalk, CT 068501447591680
- Chandrika Brown, NPNorwalk, CT 068501780252940
Common questions
What is Heather Demassa, APRN, RN, IBCLC's NPI number?
Heather Demassa, APRN, RN, IBCLC's National Provider Identifier (NPI) is 1609388560, issued on Nov 1, 2017. An NPI identifies a provider in billing; it is not a license.
Where is Heather Demassa, APRN, RN, IBCLC located?
The NPPES record lists a practice address at 36 Grove Street, Darien, CT, 06840. Phone: (203) 276-4282. Providers update this record themselves, so call before visiting.
How can I verify Heather Demassa, APRN, RN, IBCLC's license?
NPPES lists Connecticut license number 7134, as entered by the provider. Search the Connecticut board that licenses this profession; the NPPES record confirms identity only.
How much does Heather Demassa, APRN, RN, IBCLC prescribe under Medicare Part D?
In 2024, Heather Demassa, APRN, RN, IBCLC had 93 Medicare Part D claims for 37 beneficiaries; the average among family nurse practitioner prescribers was 1,305. Part D covers Medicare prescriptions only.
What is Heather Demassa, APRN, RN, IBCLC's MIPS final score?
The 2023 MIPS final score is 79.1 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.