NPPES file of Aug 9, 2026

William Alexander McLeod, DO

Addiction Medicine (Family Medicine) Physician · Marysville, CA

William Alexander McLeod, DO is an addiction medicine (family medicine) physician with a practice address in Marysville, California, and NPI 1114062684, issued on Feb 21, 2007. Check the license (California 20A6631, as entered in NPPES) on the Medical Board of California; 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
1114062684
Name
William Alexander McLeod
Credential
DO
Primary taxonomy
Addiction Medicine (Family Medicine) Physician 207QA0401X
License number
20A6631 CA
Self-reported in NPPES; status is on the state search
Practice location
320 H St, Marysville, CA 95901
Phone
(530) 742-7747
Enumerated
Feb 21, 2007
Record last updated
Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
Fax
(530) 742-7642
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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8 nearest addiction medicine (family medicine) physician records → All 124 in California → Look up another NPI →

Also registered at 320 H St

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

  1. Christina BoetsAddiction (Substance Use Disorder) Counselor1568837672
  2. Kayla CabezuelaAddiction (Substance Use Disorder) Counselor1497201339
  3. Dennis Fellner, O.DOptometrist1740282086
  4. Holly Naus, MFT INTERNMarriage & Family Therapist1477801504
  5. Alan Redstone, MFTAddiction (Substance Use Disorder) Counselor1952523656
  6. Wade SerrianAddiction (Substance Use Disorder) Counselor1265666416

Verify William Alexander McLeod in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license 20A6631    Check 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
Open the California license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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William Alexander McLeod among 124 addiction medicine (family medicine) physician records in California

William Alexander McLeod, DO is one of 124 addiction medicine (family medicine) physician records with a practice address in California. 78% 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 2007, is newer than 27% of them.

  • NPI issued2007 · 27% of these records are older, 64% newer
  • In a Medicare fileNo · 78% of these records are
  • In the CMS Doctors and Clinicians fileNo · 52% of these records are
  • Record last updated2007 · 33% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207QA0401X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Addiction Medicine (Family Medicine) Physician providers in California

There are 124 addiction medicine (family medicine) physician records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

All 124 in California → Every provider in Marysville → Addiction Medicine (Family Medicine) Physician nationwide →

The 8 addiction medicine (family medicine) physician records with the nearest ZIP codes

  1. K. BallParadise, CA 959691659578672
  2. Rachel Caspar, M.DSacramento, CA 958111053774273
  3. Roy Smith, MDYreka, CA 960971245287291
  4. Ernest Vasti, M.D.Rancho Cordova, CA 956701205869849
  5. Paul Nerz, MDPlacerville, CA 956671467549030
  6. Loni Jay, MDJackson, CA 956421487097929
  7. Jason Speaks, PHD, FNP-C, RNGalt, CA 956321902140007
  8. Eva Smith, M.D., M.P.H.Hoopa, CA 955461982773099

Common questions

What is William Alexander McLeod, DO's NPI number?

William Alexander McLeod, DO's National Provider Identifier (NPI) is 1114062684, issued on Feb 21, 2007. An NPI identifies a provider in billing; it is not a license.

Where is William Alexander McLeod, DO located?

The NPPES record lists a practice address at 320 H St, Marysville, CA, 95901. Phone: (530) 742-7747. Providers update this record themselves, so call before visiting.

How can I verify William Alexander McLeod, DO's license?

NPPES lists California license number 20A6631, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

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.