Leigh Siergiewicz, ND
Naturopath · Vashon, WA
Leigh Siergiewicz, ND is a naturopath with a practice address in Vashon, Washington, and NPI 1568975803, issued on Nov 8, 2017. Check the license (Washington NT60807283, as entered in NPPES) with the Washington board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Leigh Siergiewicz
- Credential
- ND
- Primary taxonomy
- Naturopath 175F00000X
- License number
- NT60807283 WA
Self-reported in NPPES; status is on the state search - Practice location
- 15228 119TH Ave SW, Vashon, WA 98070
- Phone
- (206) 618-0372
- Enumerated
- Nov 8, 2017
- Record last updated
- Nov 8, 2017 (not updated in 9 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest naturopath records → All 1,532 in Washington → Look up another NPI →
Verify Leigh Siergiewicz in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Washington board licenses this profession
Search for license NT60807283Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Leigh Siergiewicz among 1,532 naturopath records in Washington
Leigh Siergiewicz, ND is one of 1,532 naturopath records with a practice address in Washington. 35% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2017, is newer than 68% of them.
- NPI issued2017 · 68% of these records are older, 28% newer
- In a Medicare fileNo · 35% of these records are
- In the CMS Doctors and Clinicians fileNo · under 1% of these records are
- Record last updated2017 · 66% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 175F00000X and a Washington practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
7 naturopath records list a practice address in Vashon
They are 7 of the 218 NPPES records with a practice address in Vashon, and 1,532 naturopath records in Washington. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 1,532 in Washington → Every provider in Vashon → Naturopath nationwide →
The 8 naturopath records with the nearest ZIP codes
- Fran Brooks, NDVashon, WA 980701699482661
- Amy Clewell, N.D.Vashon, WA 980701447471263
- Peter Glidden, N.D.Vashon, WA 980701174720627
- Morgaine Hager, N.D.Vashon, WA 980701760513592
- Lisa Morse, NDVashon, WA 980701477924264
- Kelly Wright, N.D.Vashon, WA 980701942389994
- Katherine Dahlgren, N.D.Woodinville, WA 980721114186046
- Shannon Hirst, NDWoodinville, WA 980721316126667
Common questions
What is Leigh Siergiewicz, ND's NPI number?
Leigh Siergiewicz, ND's National Provider Identifier (NPI) is 1568975803, issued on Nov 8, 2017. An NPI identifies a provider in billing; it is not a license.
Where is Leigh Siergiewicz, ND located?
The NPPES record lists a practice address at 15228 119TH Ave SW, Vashon, WA, 98070. Phone: (206) 618-0372. Providers update this record themselves, so call before visiting.
How can I verify Leigh Siergiewicz, ND's license?
NPPES lists Washington license number NT60807283, as entered by the provider. Search the Washington board that licenses this profession; the NPPES record confirms identity 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. 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.