Karen A. Duncan, RNC, MSN
Nurse Practitioner · Vineland, NJ
Karen A. Duncan, RNC, MSN is a nurse practitioner with a practice address in Vineland, New Jersey, and NPI 1932369865, issued on Jun 13, 2008. Check the license (New Jersey 26NJ00160800, as entered in NPPES) with the New Jersey board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Karen A. Duncan
- Credential
- RNC, MSN
- Primary taxonomy
- Nurse Practitioner 363L00000X
- License number
- 26NJ00160800 NJ
Self-reported in NPPES; status is on the state search - Practice location
- 484 S Brewster RD, Vineland, NJ 08361
- Phone
- (856) 696-0300
- Enumerated
- Jun 13, 2008
- Record last updated
- Feb 16, 2012 (not updated in 14 years: call before relying on the address or phone)
- Fax
- (856) 696-2561
- Medicare enrollment
- Enrolled (PECOS I20080828000036); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest nurse practitioner records → All 1,961 in New Jersey → Look up another NPI →
Also registered at 484 S Brewster RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Michele Torchia, M.D.Specialist1336125558
- Rita Vastano, RN, AAPN,CNurse Practitioner1225162878
- Shelly Yamasaki, APNWomen's Health Nurse Practitioner1548637440
Verify Karen A. Duncan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich New Jersey board licenses this profession
Search for license 26NJ00160800Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
87% fewer Medicare Part D claims than the average nurse practitioner in 2024
146 Medicare Part D claims for 61 beneficiaries, against an average of 1,109 among the 54,319 providers of this specialty who prescribed in Part D.
Most prescribed
- Estradiol44 claims
- Norethindrone17 claims
- Fluconazole15 claims
- Valacyclovir14 claims
- Clotrimazole-Betamethasone13 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.
Bills Medicare through one group practice
- Regional Womens Health Group LLCTurnersville, NJ
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Karen A. Duncan among 1,961 nurse practitioner records in New Jersey
Karen A. Duncan, RNC, MSN is one of 1,961 nurse practitioner records with a practice address in New Jersey. 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 2008, is newer than 19% of them.
- NPI issued2008 · 19% of these records are older, 79% newer
- In a Medicare fileYes · 76% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated2008 · median 2019 among the 1,170 with a school on file
- Record last updated2012 · 39% 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 New Jersey practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
23 nurse practitioner records list a practice address in Vineland
They are 23 of the 1,396 NPPES records with a practice address in Vineland, and 1,961 nurse practitioner records in New Jersey.
All 1,961 in New Jersey → Every provider in Vineland → Nurse Practitioner nationwide →
The 8 nurse practitioner records with the nearest ZIP codes
- Roma John, APRN, NPVineland, NJ 083611871296525
- Cecelia Kane, APN-CVineland, NJ 083611427142678
- Rita Vastano, RN, AAPN,CVineland, NJ 083611225162878
- Richard Berger, NP-CVineland, NJ 083601992462758
- Avalon ComanzoVineland, NJ 083601225919830
- Amy Fletcher, BSN, RN, MSN, FNP-CVineland, NJ 083601114438439
- Gina KrementzVineland, NJ 083601225813850
- Emrah MoustafaVineland, NJ 083601699576397
Common questions
What is Karen A. Duncan, RNC, MSN's NPI number?
Karen A. Duncan, RNC, MSN's National Provider Identifier (NPI) is 1932369865, issued on Jun 13, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Karen A. Duncan, RNC, MSN located?
The NPPES record lists a practice address at 484 S Brewster RD, Vineland, NJ, 08361. Phone: (856) 696-0300. Providers update this record themselves, so call before visiting.
How can I verify Karen A. Duncan, RNC, MSN's license?
NPPES lists New Jersey license number 26NJ00160800, as entered by the provider. Search the New Jersey board that licenses this profession; the NPPES record confirms identity only.
How much does Karen A. Duncan, RNC, MSN prescribe under Medicare Part D?
In 2024, Karen A. Duncan, RNC, MSN had 146 Medicare Part D claims for 61 beneficiaries; the average among nurse practitioner prescribers was 1,109. 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.