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

Miss. Mary Margaret O'Neil, MS, MFT

Individual provider Marriage & Family Therapist · NPI 1699827782

Miss. Mary Margaret O'Neil, MS, MFT is a Marriage & Family Therapist in Walnut Creek, California. Licensed in California. Registered with an NPI since 2007.

Licensed in
CA
In the registry since
2007
What do these letters mean?
MS — Master of Science
A graduate science degree.
MFT — Marriage and Family Therapist
A therapist who treats couples and families.

See every abbreviation used in this directory →

Claim this listing Report a problem Suggest an edit

Practice location Address checks out

710 S Broadway
Walnut Creek, CA 94596-5294
Phone: (925) 295-5371
Show map & directions

Directions in Google Maps · Apple Maps · OpenStreetMap

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

Specialties & licences

Marriage & Family Therapist (primary) Taxonomy 106H00000X · Licence 17024 (CA)

Record details

NPI number1699827782
Entity typeIndividual (Type 1)
GenderFemale
Credentials MS , MFT
Sole proprietorNo
NPI enumeratedJanuary 17, 2007
Last updated in NPPESJuly 8, 2007

Other providers in Walnut Creek