Provider Profile
Mary D. Sienkiewicz, ARNP
Unclaimed ProfileAbout Mary Sienkiewicz
Listed in the NPI registry as a nurse practitioner, Mary D. Sienkiewicz, ARNP practices in Bellevue, WA. Mary is also listed as specializing in registered nurse.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it — free, and no identity document with a practice or institutional email.
Specialty
Credentials & Licensing
License numbers are what the provider reported to NPPES when the NPI was issued or updated. NPPES does not verify licensure; confirm current standing with the state licensing board.
Medicare information
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
Contact Information
- (206) 328-7734
- Email not available
Practice Locations
1231 116TH AVE NE STE 950
Bellevue, WA 98004
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Other nurse practitioners at this location 4
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 7
Clinically related specialties at the same address — the people this provider most likely works alongside.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
More connections — 7 related providers in 1 group
Common questions
What does Mary D. Sienkiewicz specialize in?
Mary D. Sienkiewicz is a nurse practitioner in Bellevue, WA. That is the designation recorded for this NPI in the federal registry.
NPI registry
Where is Mary D. Sienkiewicz located?
Mary D. Sienkiewicz is listed at 1231 116Th Ave Ne Ste 950, Bellevue, WA 98004. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Mary D. Sienkiewicz's phone number?
The number on file is (206) 328-7734. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is the NPI for Mary D. Sienkiewicz?
Mary D. Sienkiewicz's National Provider Identifier is 1245413533. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
How much experience does Mary D. Sienkiewicz have?
Mary D. Sienkiewicz has 19+ years experience. Registered with an NPI since 2007. National Provider Identifiers only began in 2005, so a provider who qualified earlier may have practiced for longer than this.
NPI registry
Is Mary D. Sienkiewicz's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Mary D. Sienkiewicz. If this is you, claiming it is free.
Guide.md
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.