NPPES file of Aug 9, 2026

Jacob Zeffren, MD

Medical Oncology Physician · Nutley, NJ

Jacob Zeffren, MD is a medical oncology physician with a practice address in Nutley, New Jersey, and NPI 1053584185, issued on Apr 9, 2008. Check the license (New Jersey 25MA04523200, as entered in NPPES) on the New Jersey State Board of Medical Examiners; the federal record below is the public data PlainDoctor holds for this provider.

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

NPPES recordNPPES file of Aug 9, 2026
1053584185
Name
Jacob Zeffren
Credential
MD
Primary taxonomy
Medical Oncology Physician 207RX0202X
License number
25MA04523200 NJ
Self-reported in NPPES; status is on the state search
Practice location
340 Kingsland St, Nutley, NJ 07110
Phone
(973) 562-3548
Enumerated
Apr 9, 2008
Record last updated
Apr 9, 2008 (not updated in 18 years: call before relying on the address or phone)
Fax
(973) 562-3563
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.
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8 nearest medical oncology physician records → All 140 in New Jersey → Look up another NPI →

Also registered at 340 Kingsland St

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

  1. Randi BlitzerStudent in an Organized Health Care Education/Training Program1366157554
  2. Thomas Bridge, MDBehavioral Neurology & Neuropsychiatry Physician1134489487
  3. Al-Jathiyah BurgessStudent in an Organized Health Care Education/Training Program1508744764
  4. Christina Gambino, MS, LAT, ATCAthletic Trainer1972135077
  5. Jack GreinerAcute Care Nurse Practitioner1972320125
  6. Karen KimPsychiatric/Mental Health Registered Nurse1760214787

Verify Jacob Zeffren in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersNew Jersey State Board of Medical Examiners
    Search for license 25MA04523200    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
Open 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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Jacob Zeffren among 140 medical oncology physician records in New Jersey

Jacob Zeffren, MD is one of 140 medical oncology physician records with a practice address in New Jersey. 78% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2008, is newer than 59% of them.

  • NPI issued2008 · 59% of these records are older, 32% newer
  • In a Medicare fileNo · 78% of these records are
  • In the CMS Doctors and Clinicians fileNo · 69% of these records are
  • Record last updated2008 · 40% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RX0202X and a New Jersey practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Medical Oncology Physician providers in New Jersey

There are 140 medical oncology physician records in New Jersey. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

All 140 in New Jersey → Every provider in Nutley → Medical Oncology Physician nationwide →

The 8 medical oncology physician records with the nearest ZIP codes

  1. Raymond Warrell, M.D.Westfield, NJ 070901578830774
  2. Bhavna Gupta, M.D.Union City, NJ 070871801074455
  3. Frederick Cohen, MDSouth Orange, NJ 070791942361969
  4. Lillian Pliner, M.D.Short Hills, NJ 070781518059351
  5. Jin Lee, M.D.Rutherford, NJ 070701891766721
  6. Christi Kim, MDNorth Bergen, NJ 070471053475673
  7. Andrew Brown, M.D.Livingston, NJ 070391386800464
  8. Anna Litvak, MDLivingston, NJ 070391326319302

Common questions

What is Jacob Zeffren, MD's NPI number?

Jacob Zeffren, MD's National Provider Identifier (NPI) is 1053584185, issued on Apr 9, 2008. An NPI identifies a provider in billing; it is not a license.

Where is Jacob Zeffren, MD located?

The NPPES record lists a practice address at 340 Kingsland St, Nutley, NJ, 07110. Phone: (973) 562-3548. Providers update this record themselves, so call before visiting.

How can I verify Jacob Zeffren, MD's license?

NPPES lists New Jersey license number 25MA04523200, as entered by the provider. Search the New Jersey State Board of Medical Examiners at https://newjersey.mylicense.com/verification/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. 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.