NPPES file of Aug 9, 2026

William Allen Bais

Addiction (Substance Use Disorder) Counselor · Hayward, CA

William Allen Bais is an addiction (substance use disorder) counselor with a practice address in Hayward, California, and NPI 1467880435, issued on Oct 29, 2013. Check the license with the California board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1467880435
Name
William Allen Bais
Primary taxonomy
Addiction (Substance Use Disorder) Counselor 101YA0400X
Practice location
795 Fletcher LN, Hayward, CA 94544
Phone
(510) 247-8300
Enumerated
Oct 29, 2013
Record last updated
Jan 26, 2022
Fax
(510) 247-8295
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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Also registered at 795 Fletcher LN

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Brandi AgueroAddiction (Substance Use Disorder) Counselor1922434737
  2. Sharleen AhnCounselor1760912927
  3. Citlaly AnayaNurse's Aide1427707298
  4. Katherine Barnes, C.A.T.CAddiction (Substance Use Disorder) Counselor1104206747
  5. Theresa Blaylock, MPAAddiction (Substance Use Disorder) Counselor1962844027
  6. Rudy CejaAddiction (Substance Use Disorder) Counselor1740668656

Verify William Allen Bais in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich California board licenses this professionCheck the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
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195 addiction (substance use disorder) counselor records list a practice address in Hayward

They are 195 of the 3,993 NPPES records with a practice address in Hayward, and 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 195 in Hayward → All 27,741 in California → Every provider in Hayward →

Other addiction (substance use disorder) counselor records in California

  1. Sean A Jerome, CADCIICosta Mesa, CA1831884550
  2. Carrie AamodtVisalia, CA1932661311
  3. Emory Aaron, CCAPP C4321214Los Angeles, CA1073980801
  4. Lisa Aaron, CASACCulver City, CA1356090849
  5. Michael Abacherli, JD, RADTSan Jacinto, CA1235826983
  6. Victor AbadEl Cajon, CA1205562238
  7. Sean AbairTaft, CA1174084347
  8. Maira AbalosDelano, CA1508452038
  9. Jazmine AbanicoVentura, CA1851964613
  10. Israel Abarca, CAADESan Francisco, CA1114126950

Common questions

What is William Allen Bais's NPI number?

William Allen Bais's National Provider Identifier (NPI) is 1467880435, issued on Oct 29, 2013. An NPI identifies a provider in billing; it is not a license.

Where is William Allen Bais located?

The NPPES record lists a practice address at 795 Fletcher LN, Hayward, CA, 94544. Phone: (510) 247-8300. Providers update this record themselves, so call before visiting.

How can I verify William Allen Bais'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.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.