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

Sibyl Christine Siegfried, MD

Individual provider Family Medicine Physician · NPI 1780827568

Sibyl Christine Siegfried, MD is registered under Family Practice in Seattle, Washington. Graduated from University of Wisconsin School of Medicine in 2009, 17 years ago. Practices with One Medical Group Inc, a 328-clinician group, works from 3 locations, accepts Medicare assignment and offers telehealth. Licensed in District of Columbia and Washington.

Years since qualifying
17
Trained at
University of Wisconsin School of Medicine
Licensed in
DC, WA
In the registry since
2009
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

5201 Ballard Ave NW
Seattle, WA 98107-4809
Phone: (206) 267-4390
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (2)

  • 1001 G St Nw Ste 200, Washington, DC 20001-4545 — (202) 660-0005
  • 1600 7th Ave Ste 110, Seattle, WA 98101-2288 — (206) 267-4390

Specialties & licences

Family Medicine Physician (primary) Taxonomy 207Q00000X · Licence MD 60236696 (WA)
Family Medicine Physician Taxonomy 207Q00000X · Licence MD043569 (DC)

Record details

NPI number1780827568
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedApril 9, 2009
Last updated in NPPESMarch 25, 2021
Certification dateMarch 25, 2021

Medicare enrollment

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

Medicare specialtyFAMILY PRACTICE
Medical schoolUNIVERSITY OF WISCONSIN SCHOOL OF MEDICINE
Graduated 2009 (17 years in practice)
Group practice One Medical Group Inc — 328 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

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 patients11
Services billed 43 a service is one billed item, such as a visit, a test or a procedure
Average patient age72

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.

Colleagues at One Medical Group Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 328 clinicians in the practice; 12 are shown here.

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