Michael Sonn
Counselor · Willow Creek, CA
Michael Sonn is a counselor with a practice address in Willow Creek, California, and NPI 1578091435, issued on May 23, 2017. Check the license (California LCSW98413, as entered in NPPES) with the California board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Michael Sonn
- Primary taxonomy
- Counselor 101Y00000X
- License number
- LCSW98413 CA
Self-reported in NPPES; status is on the state search - Practice location
- 114 Orchard LN, Willow Creek, CA 95573
- Phone
- (707) 633-8054
- Enumerated
- May 23, 2017
- Entity
- Type 1 · individual
Also registered at 114 Orchard LN
A shared address usually means a shared clinic or building; it does not show who employs whom.
- John EvansClinical Social Worker1326825639
Verify Michael Sonn in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license LCSW98413Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
2 counselor records list a Willow Creek practice address
They are 2 of the 32 NPPES records with a Willow Creek practice address, and 17,201 counselor records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 2 in Willow Creek → All 17,201 in California → Every provider in Willow Creek →
Other counselor records in California
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- Crystal AanderudRichmond, CA1083841761
- Cedric Aaron, MSW, ASWEureka, CA1245461268
- Regina AbadajosOakland, CA1851856488
- Erica AbaraCamarillo, CA1104099282
- Jennifer AbarcaOakland, CA1760955926
- Yamilet Abaunza, MSW, ASWHayward, CA1144605429
- Marina AbbottPetaluma, CA1669592184
Common questions
What is Michael Sonn's NPI number?
Michael Sonn's National Provider Identifier (NPI) is 1578091435, issued on May 23, 2017. An NPI identifies a provider in billing; it is not a license.
Where is Michael Sonn located?
The NPPES record lists a practice address at 114 Orchard LN, Willow Creek, CA, 95573. Phone: (707) 633-8054. Providers update this record themselves, so call before visiting.
How can I verify Michael Sonn's license?
NPPES lists California license number LCSW98413, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. An NPI identifies who bills; it is not a license.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.