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

Dr. Mary Ellen Dellefield, PHD, RN

Individual provider Gerontology Registered Nurse · NPI 1457526741

Dr. Mary Ellen Dellefield, PHD, RN is a Gerontology Registered Nurse in San Diego, California. Licensed in California. Registered with an NPI since 2008.

Licensed in
CA
In the registry since
2008
What do these letters mean?
PHD — Doctor of Philosophy
A research doctorate. In healthcare it usually sits alongside a clinical licence.
RN — Registered Nurse
A licensed nurse who completed a nursing degree and passed the NCLEX-RN examination.

See every abbreviation used in this directory →

Practice location Address checks out

3350 La Jolla Village Dr
San Diego, CA 92161-0002
Phone: (858) 552-8585
Fax: (858) 552-1249
Show map & directions

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

Specialties & licences

Gerontology Registered Nurse (primary) Taxonomy 163WG0600X · Licence 293666 (CA)

Record details

NPI number1457526741
Entity typeIndividual (Type 1)
GenderFemale
Credentials PHD , RN
Sole proprietorNo
NPI enumeratedApril 28, 2008
Last updated in NPPESApril 28, 2008

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