William J. Smith
Addiction (Substance Use Disorder) Counselor · Rohnert Park, CA
William J. Smith is an addiction (substance use disorder) counselor with a practice address in Rohnert Park, California, and NPI 1740810142, issued on Jan 24, 2020. Check the license with the California board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- William J. Smith
- Primary taxonomy
- Addiction (Substance Use Disorder) Counselor 101YA0400X
- Practice location
- 308 Firethorn Dr, Rohnert Park, CA 94928
- Phone
- (510) 459-8905
- Enumerated
- Jan 24, 2020
- Record last updated
- Jan 24, 2020 (not updated in 6 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest addiction (substance use disorder) counselor records → All 27,741 in California → Look up another NPI →
Verify William J. Smith in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this professionCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
William J. Smith among 27,741 addiction (substance use disorder) counselor records in California
William J. Smith is one of 27,741 addiction (substance use disorder) counselor records with a practice address in California. under 1% 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 2020, is newer than 59% of them.
- NPI issued2020 · 59% of these records are older, 36% newer
- In a Medicare fileNo · under 1% of these records are
- In the CMS Doctors and Clinicians fileNo · under 1% of these records are
- Record last updated2020 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 101YA0400X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Addiction (Substance Use Disorder) Counselor providers in California
There are 27,741 addiction (substance use disorder) counselor records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 27,741 in California → Every provider in Rohnert Park → Addiction (Substance Use Disorder) Counselor nationwide →
The 8 addiction (substance use disorder) counselor records with the nearest ZIP codes
- Eugene Hay, CADC IIRohnert Park, CA 949281437695467
- Isabella LeeRohnert Park, CA 949281477442994
- Laura RenshawRohnert Park, CA 949281225906852
- Joel ReynoldsRohnert Park, CA 949281457722282
- Katie HulettCotati, CA 949311679190821
- Jacqueline Perlmutter, RASCorte Madera, CA 949251871995167
- Patricia Rutledge, APCCCorte Madera, CA 949251447961420
- John Thompson, SUDRCCotati, CA 949311548095722
Common questions
What is William J. Smith's NPI number?
William J. Smith's National Provider Identifier (NPI) is 1740810142, issued on Jan 24, 2020. An NPI identifies a provider in billing; it is not a license.
Where is William J. Smith located?
The NPPES record lists a practice address at 308 Firethorn Dr, Rohnert Park, CA, 94928. Phone: (510) 459-8905. Providers update this record themselves, so call before visiting.
How can I verify William J. Smith's license?
Search the California 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.