Karen Marzitelli, APRN
Adult Health Nurse Practitioner · West Haven, CT
Karen Marzitelli, APRN is an adult health nurse practitioner with a practice address in West Haven, Connecticut, and NPI 1205873783, issued on Jun 1, 2006. Check the license (Connecticut 000881, as entered in NPPES) with the Connecticut board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Karen Marzitelli
- Credential
- APRN
- Primary taxonomy
- Adult Health Nurse Practitioner 363LA2200X
- License number
- 000881 CT
Self-reported in NPPES; status is on the state search - Practice location
- 950 Campbell Ave, West Haven, CT 06516
- Phone
- (202) 937-4972
- Enumerated
- Jun 1, 2006
- Record last updated
- Jul 13, 2026
- Fax
- (202) 937-3403
- Entity
- Type 1 · individual
8 nearest adult health nurse practitioner records → All 628 in Connecticut → Look up another NPI →
Also registered at 950 Campbell Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Matthew Abbott, LCSWSocial Worker1790734986
- Erica Abel, PH.D.Clinical Psychologist1982971222
- Audrey Abelleira, PHARMDPharmacist1831671577
- Mary Abraham, PHARMDPharmacist1386344950
- Linda Accordino, RN, MSNGerontology Nurse Practitioner1396853289
- Jenna Adamowicz, PH.D.Clinical Psychologist1356271266
Verify Karen Marzitelli in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Connecticut board licenses this profession
Search for license 000881Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
97% fewer Medicare Part D claims than the average adult health nurse practitioner in 2024
42 Medicare Part D claims for 14 beneficiaries, against an average of 1,280 among the 16,937 providers of this specialty who prescribed in Part D.
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.
Karen Marzitelli among 628 adult health nurse practitioner records in Connecticut
Karen Marzitelli, APRN is one of 628 adult health nurse practitioner records with a practice address in Connecticut. 71% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 6% of them.
- NPI issued2006 · 6% of these records are older, 76% newer
- In a Medicare fileYes · 71% of these records are
- In the CMS Doctors and Clinicians fileNo · 53% of these records are
- Record last updated2026 · 60% 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 Connecticut practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
35 adult health nurse practitioner records list a practice address in West Haven
They are 35 of the 1,356 NPPES records with a practice address in West Haven, and 628 adult health nurse practitioner records in Connecticut.
All 628 in Connecticut → Every provider in West Haven → Adult Health Nurse Practitioner nationwide →
The 8 adult health nurse practitioner records with the nearest ZIP codes
- Karen Bahr, NPWest Haven, CT 065161821038126
- Susan Barringer, APRNWest Haven, CT 065161558648055
- David Booth, APRNWest Haven, CT 065161154564284
- Karen Discepolo, NPWest Haven, CT 065161174634885
- Jill Edwards, APRN.BCWest Haven, CT 065161841242419
- Rebecca Herter, NP-CWest Haven, CT 065161790068450
- Donna Montesi, APRNWest Haven, CT 065161457354086
- Katherine Perry, APRNWest Haven, CT 065161174638704
Common questions
What is Karen Marzitelli, APRN's NPI number?
Karen Marzitelli, APRN's National Provider Identifier (NPI) is 1205873783, issued on Jun 1, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Karen Marzitelli, APRN located?
The NPPES record lists a practice address at 950 Campbell Ave, West Haven, CT, 06516. Phone: (202) 937-4972. Providers update this record themselves, so call before visiting.
How can I verify Karen Marzitelli, APRN's license?
NPPES lists Connecticut license number 000881, as entered by the provider. Search the Connecticut board that licenses this profession; the NPPES record confirms identity only.
How much does Karen Marzitelli, APRN prescribe under Medicare Part D?
In 2024, Karen Marzitelli, APRN had 42 Medicare Part D claims for 14 beneficiaries; the average among adult health nurse practitioner prescribers was 1,280. Part D covers Medicare prescriptions only.
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.