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

Marianne L Twyman, MD

Individual provider Family Medicine Physician · NPI 1184849804

Marianne L Twyman, MD is a Family Medicine Physician in Seattle, Washington. Licensed in Washington. Registered with an NPI since 2007.

Licensed in
WA
In the registry since
2007
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Claim this listing Report a problem Suggest an edit

Practice location Address checks out

2001 E Madison St
Seattle, WA 98122-2959
Phone: (206) 328-7722
Fax: (206) 720-4657
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

Family Medicine Physician (primary) Taxonomy 207Q00000X · Licence MD00015182 (WA)

Record details

NPI number1184849804
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedApril 16, 2007
Last updated in NPPESMarch 7, 2023

Other providers in Seattle