Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Mr. Mark Leja, APN

Individual provider Psychiatric/Mental Health Nurse Practitioner · NPI 1669242483

Mr. Mark Leja, APN is a Nurse Practitioner in Elizabeth, New Jersey. Qualified in 2023, 3 years ago. Practices with Barnabas Health Medical Group, PC, a 255-clinician group and accepts Medicare assignment. Licensed in New Jersey.

Years since qualifying
3
Licensed in
NJ
In the registry since
2024
What do these letters mean?
APN — Advanced Practice Nurse
The umbrella title some states use for nurse practitioners and other advanced practice nurses.

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Practice location Address checks out

654 E Jersey St
Elizabeth, NJ 07206-1261
Phone: (908) 994-7552
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Psychiatric/Mental Health Nurse Practitioner (primary) Taxonomy 363LP0808X · Licence 26NJ14964400 (NJ)

Record details

NPI number1669242483
Entity typeIndividual (Type 1)
GenderMale
Credentials APN
Sole proprietorYes
NPI enumeratedJanuary 3, 2024
Last updated in NPPESMarch 6, 2024
Certification dateJanuary 31, 2024
Mailing addressPo Box 89, Wood Ridge, NJ 07075-0089

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyNURSE PRACTITIONER
Medical schoolOTHER
Graduated 2023 (3 years in practice)
Group practice Barnabas Health Medical Group, Pc — 255 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

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