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

Dr. Mary Lou Stewart, DDS

Individual provider Endodontics · NPI 1215900139

Dr. Mary Lou Stewart, DDS is an Endodontics in Oak Harbor, Washington. Licensed in California. Registered with an NPI since 2006.

Licensed in
CA
In the registry since
2006
What do these letters mean?
DDS — Doctor of Dental Surgery
A dentist. DDS and DMD are the same qualification — universities choose which title to award.

See every abbreviation used in this directory →

Practice location Address checks out

3475 W Saratoga St
Oak Harbor, WA 98278-0001
Phone: (360) 257-4410
Show map & directions

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

Specialties & licences

Endodontics (primary) Taxonomy 1223E0200X · Licence 32929 (CA)

Record details

NPI number1215900139
Entity typeIndividual (Type 1)
GenderFemale
Credentials DDS
Sole proprietorNo
NPI enumeratedFebruary 10, 2006
Last updated in NPPESOctober 26, 2007

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