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

Mary Olivia De Leon, FNP

Individual provider Pediatric Clinical Nurse Specialist · NPI 1609104066

Mary Olivia De Leon, FNP is a Pediatric Clinical Nurse Specialist in Brownsville, Texas. Licensed in Texas. Registered with an NPI since 2009.

Licensed in
TX
In the registry since
2009
What do these letters mean?
FNP — Family Nurse Practitioner
A nurse practitioner who treats patients of all ages, much like a family doctor.

See every abbreviation used in this directory →

Practice location Address checks out

4920 N Expressway Alton Gloor PLAZA#101
Brownsville, TX 78526
Phone: (956) 350-5530
Fax: (956) 350-5527
Show map & directions

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

Specialties & licences

Pediatric Clinical Nurse Specialist (primary) Taxonomy 364SP0200X · Licence 670508 (TX)

Record details

NPI number1609104066
Entity typeIndividual (Type 1)
GenderFemale
Credentials FNP
Sole proprietorNo
NPI enumeratedNovember 24, 2009
Last updated in NPPESOctober 7, 2011