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

MS. Maryanne Elizabeth O'Halloran, MS, RN, CNS

Individual provider Registered Nurse · NPI 1801805882

MS. Maryanne Elizabeth O'Halloran, MS, RN, CNS is a Registered Nurse in Manteca, California. Practices as a sole proprietor. Licensed in California.

Licensed in
CA
In the registry since
2006
Specialties on file
2
What do these letters mean?
MS — Master of Science
A graduate science degree.
RN — Registered Nurse
A licensed nurse who completed a nursing degree and passed the NCLEX-RN examination.
CNS — Clinical Nurse Specialist
An advanced practice nurse specialising in a patient population or setting.

See every abbreviation used in this directory →

Practice location Address checks out

965 E Yosemite Ave #18
Manteca, CA 95336-5938
Phone: (209) 545-9701
Fax: (209) 824-7264
Show map & directions

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

Specialties & licences

Clinical Nurse Specialist (primary) Taxonomy 364S00000X · Licence 1124 (CA)
Registered Nurse Taxonomy 163W00000X · Licence 260281 (CA)

Record details

NPI number1801805882
Entity typeIndividual (Type 1)
GenderFemale
Credentials MS , RN , CNS
Sole proprietorYes
NPI enumeratedAugust 7, 2006
Last updated in NPPESFebruary 20, 2017

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