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

Brianna Elizabeth Grinnell, DO

Individual provider Family Medicine Physician · NPI 1235620378

Brianna Elizabeth Grinnell, DO is registered under Family Practice in Seattle, Washington. Graduated from Touro Un College of Osteopathic Medicine, Vallejo in 2018, 8 years ago. Practices with Swedish Health Services, a 384-clinician group and accepts Medicare assignment. Licensed in Washington.

Years since qualifying
8
Trained at
Touro Un College of Osteopathic Medicine, Vallejo
Licensed in
WA
In the registry since
2018
What do these letters mean?
DO — Doctor of Osteopathic Medicine
A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.

See every abbreviation used in this directory →

Claim this listing Report a problem Suggest an edit

Practice location Address checks out

4540 Union Bay Pl NE
Seattle, WA 98105-4025
Phone: (206) 320-8050
Fax: (206) 320-8048
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 OP61078848 (WA)

Record details

NPI number1235620378
Entity typeIndividual (Type 1)
GenderFemale
Credentials DO
Sole proprietorNo
NPI enumeratedMay 24, 2018
Last updated in NPPESJanuary 13, 2022
Certification dateJanuary 13, 2022

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyFAMILY PRACTICE
Medical schoolTOURO UN COLLEGE OF OSTEOPATHIC MEDICINE, VALLEJO
Graduated 2018 (8 years in practice)
Group practice Swedish Health Services — 384 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Procedures

From CMS Care Compare, which counts the procedures a clinician billed to Original Medicare and Medicare Advantage over a recent 12-month period. CMS reports a fixed list of common procedures, so this is not everything the clinician does. Counts of 10 or fewer are given as a range, because CMS withholds small numbers.

Removal of skin lesions 1–10 times
Removal or shaving of skin growth 1–10 times

The percentile compares how often this clinician performed the procedure with other clinicians who performed it, as CMS calculates it. It measures volume, not outcomes or skill.

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients100
Services billed 409 a service is one billed item, such as a visit, a test or a procedure
Average patient age74

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at Swedish Health Services

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 384 clinicians in the practice; 12 are shown here.

Other providers in Seattle