Sibyl Christine Siegfried, M.D.
Family Medicine Physician · Seattle, WA
Sibyl Christine Siegfried, M.D. is a family medicine physician with a practice address in Seattle, Washington, and NPI 1780827568, issued on Apr 9, 2009. Check the license (Washington MD 60236696, as entered in NPPES) on the Washington Medical Commission; the Medicare figures below come from public CMS files.
- Name
- Sibyl Christine Siegfried
- Credential
- M.D.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License numbers
- MD 60236696 WA
MD043569 DC
Self-reported in NPPES; status is on the state search - Practice location
- 5201 Ballard Ave NW, Seattle, WA 98107
- Phone
- (206) 267-4390
- Enumerated
- Apr 9, 2009
- Record last updated
- Mar 25, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20120823000174); accepts Medicare assignment
- Medical or professional school
- University Of Wisconsin School Of Medicine, 2009
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 5,534 in Washington → Look up another NPI →
Verify Sibyl Christine Siegfried in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWashington Medical Commission
Search for license MD 60236696Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
99% fewer Medicare Part D claims than the average family medicine physician in 2024
45 Medicare Part D claims, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D.
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Bills Medicare through one group practice
- One Medical Group IncSeattle, WA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Sibyl Christine Siegfried among 5,534 family medicine physician records in Washington
Sibyl Christine Siegfried, M.D. is one of 5,534 family medicine physician records with a practice address in Washington. 73% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2009, is newer than 57% of them.
- NPI issued2009 · 57% of these records are older, 41% newer
- In a Medicare fileYes · 73% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated2009 · median 2009 among the 3,294 with a school on file
- Record last updated2021 · 57% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Washington practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
871 family medicine physician records list a practice address in Seattle
They are 871 of the 41,956 NPPES records with a practice address in Seattle, and 5,534 family medicine physician records in Washington.
All 5,534 in Washington → Every provider in Seattle → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Jorielle Bautista, M.D.Seattle, WA 981071891733473
- Stephen Dudley, M.D.Seattle, WA 981071154358695
- Margaux Emanuel, MDSeattle, WA 981071326155136
- Charles Falzon, M.D.Seattle, WA 981071780655001
- Daniel Friedmann, M.D.Seattle, WA 981071598793960
- Thomas Gustafson, D.O.Seattle, WA 981071285669093
- Thomas Jansen, D.O.Seattle, WA 981071861433906
- Cynthia Johnson, M.D.Seattle, WA 981071275576613
Common questions
What is Sibyl Christine Siegfried, M.D.'s NPI number?
Sibyl Christine Siegfried, M.D.'s National Provider Identifier (NPI) is 1780827568, issued on Apr 9, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Sibyl Christine Siegfried, M.D. located?
The NPPES record lists a practice address at 5201 Ballard Ave NW, Seattle, WA, 98107. Phone: (206) 267-4390. Providers update this record themselves, so call before visiting.
How can I verify Sibyl Christine Siegfried, M.D.'s license?
NPPES lists Washington license number MD 60236696, as entered by the provider. Search the Washington Medical Commission at https://wahelms.my.site.com/s/license-search. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Sibyl Christine Siegfried, M.D. prescribe under Medicare Part D?
In 2024, Sibyl Christine Siegfried, M.D. had 45 Medicare Part D claims; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.