Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Dr. Nereida Diaz-Johnson, MD

Individual provider Internal Medicine Physician · NPI 1013939917

Dr. Nereida Diaz-Johnson, MD is an Internal Medicine in Union, New Jersey. Qualified in 1985, 41 years ago. Practices with Union Medical Group, LLC, a 2-clinician group, accepts Medicare assignment and offers telehealth. Licensed in New Jersey.

Years since qualifying
41
Licensed in
NJ
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

2401 Morris Ave
Union, NJ 07083-5745
Phone: (908) 688-5000
Fax: (908) 688-5220
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence MA49304 (NJ)

Record details

NPI number1013939917
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedJuly 23, 2006
Last updated in NPPESMarch 31, 2010
Mailing address2401 Morris Ave, Union, NJ 07083-5745

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolOTHER
Graduated 1985 (41 years in practice)
Group practice Union Medical Group, Llc — 2 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

Other providers in Union