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

Mrs. Mary Eileen Berg, NP

Individual provider Obstetrics & Gynecology Nurse Practitioner · NPI 1336352939

Mrs. Mary Eileen Berg, NP is an Obstetrics & Gynecology Nurse Practitioner in Upland, California. Licensed in California. Registered with an NPI since 2007.

Licensed in
CA
In the registry since
2007
What do these letters mean?
NP — Nurse Practitioner
An advanced practice nurse who can diagnose, treat and in most states prescribe.

See every abbreviation used in this directory →

Practice location Address checks out

600 N Mountain Ave Ste A104
Upland, CA 91786-4359
Phone: (909) 931-1033
Fax: (909) 981-8976
Show map & directions

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

Specialties & licences

Obstetrics & Gynecology Nurse Practitioner (primary) Taxonomy 363LX0001X · Licence 389253 (CA)

Record details

NPI number1336352939
Entity typeIndividual (Type 1)
GenderFemale
Credentials NP
Sole proprietorNo
NPI enumeratedMay 8, 2007
Last updated in NPPESNovember 8, 2010
Mailing address536 E Mariposa St, Upland, CA 91784-2071

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