NPPES file of Aug 9, 2026

Abigail Nelken

Registered Dietitian · Passaic, NJ

Abigail Nelken is a registered dietitian with a practice address in Passaic, New Jersey, and NPI 1588525158, issued on Nov 21, 2025. Check the license (New Jersey 86390586, 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 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1588525158
Name
Abigail Nelken
Primary taxonomy
Registered Dietitian 133V00000X
License number
86390586 NJ
Self-reported in NPPES; status is on the state search
Practice location
350 Boulevard, Passaic, NJ 07055
Phone
(973) 594-7800
Enumerated
Nov 21, 2025
Record last updated
Nov 21, 2025
Medicare enrollment
Enrolled (PECOS I20260220001320); accepts Medicare assignment
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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8 nearest registered dietitian records → All 2,006 in New Jersey → Look up another NPI →

Also registered at 350 Boulevard

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Ronald Aboody, MDSpecialist1235109976
  2. Arvin Adler, D.O.Radiation Oncology Physician1265430433
  3. Mildred Agres, MDAnesthesiology Physician1598795577
  4. Mina Aknouk, MDInternal Medicine Physician1073133013
  5. Kershina Alexander, MDStudent in an Organized Health Care Education/Training Program1427997691
  6. Maxine Amadi, MDStudent in an Organized Health Care Education/Training Program1952240368

Verify Abigail Nelken 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 86390586    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.

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Bills Medicare through one group practice

  1. St Marys General Medical Group PCPassaic, NJ

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Abigail Nelken among 2,006 registered dietitian records in New Jersey

Abigail Nelken is one of 2,006 registered dietitian records with a practice address in New Jersey. 8% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2025, is newer than 87% of them.

  • NPI issued2025 · 87% of these records are older, 5% newer
  • In a Medicare fileYes · 8% of these records are
  • In the CMS Doctors and Clinicians fileYes · 13% of these records are
  • Graduated2024 · median 2010 among the 257 with a school on file
  • Record last updated2025 · 56% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 133V00000X and a New Jersey practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

11 registered dietitian records list a practice address in Passaic

They are 11 of the 665 NPPES records with a practice address in Passaic, and 2,006 registered dietitian records in New Jersey.

All 2,006 in New Jersey → Every provider in Passaic → Registered Dietitian nationwide →

The 8 registered dietitian records with the nearest ZIP codes

  1. Deborah Brickman, MS, RD, CDN, CDCESPassaic, NJ 070551952060808
  2. Jose Espinosa, RDPassaic, NJ 070551851751101
  3. Shoshana Glatzer, REGISTERED DIETITIANPassaic, NJ 070551124644380
  4. Alyssa Grossman, RDPassaic, NJ 070551003529702
  5. Rebecca Heller, PHD, MS, RDPassaic, NJ 070551114774833
  6. Shani Hirsch, RDNPassaic, NJ 070551609621895
  7. Shira Isenberg, R.D., M.P.H.Passaic, NJ 070551326330465
  8. Chanie Koplowitz, RDPassaic, NJ 070551457612509

Common questions

What is Abigail Nelken's NPI number?

Abigail Nelken's National Provider Identifier (NPI) is 1588525158, issued on Nov 21, 2025. An NPI identifies a provider in billing; it is not a license.

Where is Abigail Nelken located?

The NPPES record lists a practice address at 350 Boulevard, Passaic, NJ, 07055. Phone: (973) 594-7800. Providers update this record themselves, so call before visiting.

How can I verify Abigail Nelken's license?

NPPES lists New Jersey license number 86390586, as entered by the provider. Search the New Jersey board that licenses this profession; the NPPES record confirms identity 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.