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

Mari E. Welch, APN

Individual provider Pediatric Nurse Practitioner · NPI 1538433479

Mari E. Welch, APN is a Nurse Practitioner in Wilmington, Delaware. Qualified in 2011, 15 years ago. Licensed in Delaware.

Years since qualifying
15
Licensed in
DE
In the registry since
2012
What do these letters mean?
APN — Advanced Practice Nurse
The umbrella title some states use for nurse practitioners and other advanced practice nurses.

See every abbreviation used in this directory →

Practice location Address checks out

1600 Rockland Rd
Wilmington, DE 19803-3607
Phone: (302) 651-4200
Fax: (302) 651-5365
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Pediatric Nurse Practitioner (primary) Taxonomy 363LP0200X · Licence LJ0000273 (DE)

Record details

NPI number1538433479
Entity typeIndividual (Type 1)
GenderFemale
Credentials APN
Sole proprietorNo
NPI enumeratedFebruary 23, 2012
Last updated in NPPESSeptember 29, 2025
Certification dateSeptember 29, 2025
Mailing address640 S State St, Dover, DE 19901-3530

Medicare enrollment

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

Medicare specialtyNURSE PRACTITIONER
Medical schoolOTHER
Graduated 2011 (15 years in practice)
Accepts Medicare assignment Not indicated

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