NPPES file of Aug 9, 2026

Karen Kiefer, APN

Gerontology Nurse Practitioner · Kenilworth, NJ

Karen Kiefer, APN is a gerontology nurse practitioner with a practice address in Kenilworth, New Jersey, and NPI 1194297978, issued on Dec 18, 2018. Check the license (New Jersey 26NJ00872700, as entered in NPPES) with the New Jersey board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1194297978
Name
Karen Kiefer
Credential
APN
Primary taxonomy
Gerontology Nurse Practitioner 363LG0600X
License number
26NJ00872700 NJ
Self-reported in NPPES; status is on the state search
Practice location
657 Newark Ave, Kenilworth, NJ 07033
Phone
(908) 477-3047
Enumerated
Dec 18, 2018
Record last updated
Dec 18, 2018 (not updated in 8 years: call before relying on the address or phone)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
Download card Updates feed

Verify Karen Kiefer in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich New Jersey board licenses this profession
    Search for license 26NJ00872700    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Find the New Jersey license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

Is this page about you? You can ask us to correct, restrict or remove it: how.

67% fewer Medicare Part D claims than the average gerontology nurse practitioner in 2024

451 Medicare Part D claims for 53 beneficiaries, against an average of 1,369 among the 6,165 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims. 26 claims were for opioids.

  1. Karen Kiefer451
  2. Specialty average1,369

Most prescribed

  1. Atorvastatin Calcium47 claims
  2. Gabapentin40 claims
  3. Mirtazapine29 claims
  4. Furosemide28 claims
  5. Potassium Chloride20 claims
  6. Levothyroxine Sodium19 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.

1 gerontology nurse practitioner records list a practice address in Kenilworth

They are 1 of the 79 NPPES records with a practice address in Kenilworth, and 547 gerontology nurse practitioner records in New Jersey.

All 547 in New Jersey → Every provider in Kenilworth →

Other gerontology nurse practitioner records in New Jersey

  1. Emmanuel AbanesBergenfield, NJ1255198974
  2. Siham AboulhassaneLittle Falls, NJ1285118505
  3. Anitha Abraham, APNWest Caldwell, NJ1629588157
  4. Jan AcampadoLivingston, NJ1487427001
  5. Chioma Achonye, APNUnion, NJ1326807991
  6. Pinky Adda, NP, WOUND SPECIALISTFreehold, NJ1447973144
  7. Beth Addis, APNMarmora, NJ1952826612
  8. Jane Afremova, APRN, A-GNP-CRahway, NJ1154889301
  9. Tanneh Agboola, APNHamilton, NJ1013318864
  10. Luthien AguasEnglewood, NJ1598582967

Common questions

What is Karen Kiefer, APN's NPI number?

Karen Kiefer, APN's National Provider Identifier (NPI) is 1194297978, issued on Dec 18, 2018. An NPI identifies a provider in billing; it is not a license.

Where is Karen Kiefer, APN located?

The NPPES record lists a practice address at 657 Newark Ave, Kenilworth, NJ, 07033. Phone: (908) 477-3047. Providers update this record themselves, so call before visiting.

How can I verify Karen Kiefer, APN's license?

NPPES lists New Jersey license number 26NJ00872700, as entered by the provider. Search the New Jersey board that licenses this profession; the NPPES record confirms identity only.

How much does Karen Kiefer, APN prescribe under Medicare Part D?

In 2024, Karen Kiefer, APN had 451 Medicare Part D claims for 53 beneficiaries; the average among gerontology nurse practitioner prescribers was 1,369. 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.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.