NPPES file of Aug 9, 2026

William L. Clauson, M.D.

Pain Medicine (Anesthesiology) Physician · Fremont, CA

William L. Clauson, M.D. is a pain medicine (anesthesiology) physician with a practice address in Fremont, California, and NPI 1427072560, issued on Jul 26, 2006. Check the license (California G27171, 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
1427072560
Name
William L. Clauson
Credential
M.D.
Primary taxonomy
Pain Medicine (Anesthesiology) Physician 207LP2900X
License number
G27171 CA
Self-reported in NPPES; status is on the state search
Practice location
38069 Martha Ave, Fremont, CA 94536
Phone
(510) 744-9153
Enumerated
Jul 26, 2006
Record last updated
Oct 11, 2016 (not updated in 10 years: call before relying on the address or phone)
Fax
(510) 744-9399
Medicaid ID
00G271710 CA
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.
Download card Updates feed

8 nearest pain medicine (anesthesiology) physician records → All 536 in California → Look up another NPI →

Also registered at 38069 Martha Ave

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

  1. Steve Abercrombie, D.C.Sports Physician Chiropractor1346331964
  2. Stephen Collins, D.C.Sports Physician Chiropractor1932213782
  3. Barbara Kostick, M.D.Family Medicine Physician1104840586
  4. Connie Liang, O.D.Optometrist1609171990
  5. Raymond Pedersen, ODOptometrist1457343717
  6. Marilee Schuchard, M.D.Pain Medicine (Anesthesiology) Physician1629091939

Verify William L. Clauson in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license G27171    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.

Is this page about you? You can ask us to correct, restrict or remove it: how.

William L. Clauson among 536 pain medicine (anesthesiology) physician records in California

William L. Clauson, M.D. is one of 536 pain medicine (anesthesiology) physician records with a practice address in California. 83% 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 2006, is newer than 5% of them.

  • NPI issued2006 · 5% of these records are older, 57% newer
  • In a Medicare fileNo · 83% of these records are
  • In the CMS Doctors and Clinicians fileNo · 68% of these records are
  • Record last updated2016 · 51% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207LP2900X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Pain Medicine (Anesthesiology) Physician providers in California

There are 536 pain medicine (anesthesiology) physician records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

All 536 in California → Every provider in Fremont → Pain Medicine (Anesthesiology) Physician nationwide →

The 8 pain medicine (anesthesiology) physician records with the nearest ZIP codes

  1. Marilee Schuchard, M.D.Fremont, CA 945361629091939
  2. Michael Miller, D.O.Travis Afb, CA 945351609309475
  3. Ryan Young, M.D.Travis Afb, CA 945351255588927
  4. Cynthia Pena, MDFairfield, CA 945331417031717
  5. Colin Fernandes, MDMartinez, CA 945531215911763
  6. Christina Wang, M.D.Martinez, CA 945531548555014
  7. Lucas Konovalenko, MDNapa, CA 945581699972679
  8. Arun Anand, MDBenicia, CA 945101578521050

Common questions

What is William L. Clauson, M.D.'s NPI number?

William L. Clauson, M.D.'s National Provider Identifier (NPI) is 1427072560, issued on Jul 26, 2006. An NPI identifies a provider in billing; it is not a license.

Where is William L. Clauson, M.D. located?

The NPPES record lists a practice address at 38069 Martha Ave, Fremont, CA, 94536. Phone: (510) 744-9153. Providers update this record themselves, so call before visiting.

How can I verify William L. Clauson, M.D.'s license?

NPPES lists California license number G27171, 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.