NPPES file of Aug 9, 2026

Mark Leja, APN

Psychiatric/Mental Health Nurse Practitioner · Elizabeth, NJ

Mark Leja, APN is a psychiatric/mental health nurse practitioner with a practice address in Elizabeth, New Jersey, and NPI 1669242483, issued on Jan 3, 2024. Check the license (New Jersey 26NJ14964400, 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
1669242483
Name
Mark Leja
Credential
APN
Primary taxonomy
Psychiatric/Mental Health Nurse Practitioner 363LP0808X
License number
26NJ14964400 NJ
Self-reported in NPPES; status is on the state search
Practice location
654 E Jersey St, Elizabeth, NJ 07206
Phone
(908) 994-7552
Enumerated
Jan 3, 2024
Record last updated
Mar 6, 2024
Medicare enrollment
Enrolled (PECOS I20260202001783); 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 psychiatric/mental health nurse practitioner records → All 1,806 in New Jersey → Look up another NPI →

Also registered at 654 E Jersey St

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

  1. Mindy Altschul, LCSWClinical Social Worker1689031171
  2. Nina Arbadji, LCSWClinical Social Worker1851082531
  3. Frederick Blaszka, MDInternal Medicine Physician1598778326
  4. Victoria Blom, LCSWClinical Social Worker1396272142
  5. Steven Bolten, L.S.W, L.C.A.D.C.Addiction (Substance Use Disorder) Counselor1548690621
  6. Rocco Briscese, MALPCAddiction (Substance Use Disorder) Counselor1003026386

Verify Mark Leja 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 26NJ14964400    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

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39% fewer Medicare Part D claims than the average psychiatric/mental health nurse practitioner in 2024

554 Medicare Part D claims for 40 beneficiaries, against an average of 906 among the 30,717 providers of this specialty who prescribed in Part D. Brand-name drugs were 6% of claims.

  1. Mark Leja554
  2. Specialty average906

Most prescribed

  1. Duloxetine Hcl51 claims
  2. Aripiprazole38 claims
  3. Quetiapine Fumarate34 claims
  4. Benztropine Mesylate33 claims
  5. Buspirone Hcl33 claims
  6. Olanzapine32 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.

Industry payments in 2024: $114.36

7 payments; by number, the most common kind was food and beverage; the largest payer was Teva Pharmaceuticals USA, Inc. The 23,362 providers of this specialty with any payment received $1,027.77 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Mark Leja$114.36
  2. Specialty average$1,027.77

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Bills Medicare through one group practice

  1. Barnabas Health Medical Group, PCNewark, NJ

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

Mark Leja among 1,806 psychiatric/mental health nurse practitioner records in New Jersey

Mark Leja, APN is one of 1,806 psychiatric/mental health nurse practitioner records with a practice address in New Jersey. 72% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2024, is newer than 67% of them.

  • NPI issued2024 · 67% of these records are older, 21% newer
  • In a Medicare fileYes · 72% of these records are
  • In the CMS Doctors and Clinicians fileYes · 59% of these records are
  • Graduated2023 · median 2021 among the 1,070 with a school on file
  • Record last updated2024 · 21% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LP0808X 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 psychiatric/mental health nurse practitioner records list a practice address in Elizabeth

They are 23 of the 1,107 NPPES records with a practice address in Elizabeth, and 1,806 psychiatric/mental health nurse practitioner records in New Jersey.

All 1,806 in New Jersey → Every provider in Elizabeth → Psychiatric/Mental Health Nurse Practitioner nationwide →

The 8 psychiatric/mental health nurse practitioner records with the nearest ZIP codes

  1. Ruth Adelman, RN,APN,CElizabeth, NJ 072061144291139
  2. Kate Amoa OhenakwahElizabeth, NJ 072061184334997
  3. Colleen Fleischman, NPElizabeth, NJ 072061518939669
  4. Rita Foegen, APRN, BC, LCADCElizabeth, NJ 072061225000375
  5. Nkenna IjehElizabeth, NJ 072061891440210
  6. Andrea Krasno, NPElizabeth, NJ 072061396068722
  7. Mary McAndrew, NPElizabeth, NJ 072061972575926
  8. Shirley Messina, NPElizabeth, NJ 072061871137356

Common questions

What is Mark Leja, APN's NPI number?

Mark Leja, APN's National Provider Identifier (NPI) is 1669242483, issued on Jan 3, 2024. An NPI identifies a provider in billing; it is not a license.

Where is Mark Leja, APN located?

The NPPES record lists a practice address at 654 E Jersey St, Elizabeth, NJ, 07206. Phone: (908) 994-7552. Providers update this record themselves, so call before visiting.

How can I verify Mark Leja, APN's license?

NPPES lists New Jersey license number 26NJ14964400, as entered by the provider. Search the New Jersey board that licenses this profession; the NPPES record confirms identity only.

How much does Mark Leja, APN prescribe under Medicare Part D?

In 2024, Mark Leja, APN had 554 Medicare Part D claims for 40 beneficiaries; the average among psychiatric/mental health nurse practitioner prescribers was 906. 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.