NPPES file of Aug 9, 2026

William Charles Conway, MD

Surgical Oncology Physician · Santa Barbara, CA

William Charles Conway, MD is a surgical oncology physician with a practice address in Santa Barbara, California, and NPI 1962626390, issued on Apr 13, 2007. Check the license (California A99863, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1962626390
Name
William Charles Conway
Credential
MD
Primary taxonomy
Surgical Oncology Physician 2086X0206X
License number
A99863 CA
Self-reported in NPPES; status is on the state search
Practice location
540 W Pueblo St, Santa Barbara, CA 93105
Phone
(805) 879-0670
Enumerated
Apr 13, 2007
Record last updated
Aug 15, 2022
Medicare enrollment
Enrolled (PECOS I20071120000536); accepts Medicare assignment
Medical or professional school
Wayne State University School Of Medicine, 2001
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 540 W Pueblo St

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

  1. Mark Abate, M.D.Hematology & Oncology Physician1588778674
  2. Mohammed Abu Zaanona, MDHematology & Oncology Physician1922591197
  3. Hannah AndrewsGenetic Counselor (M.S.)1447636337
  4. Maira Campos, M.D.Hematology & Oncology Physician1497020861
  5. Monica ChenFamily Nurse Practitioner1326767633
  6. Jessica Davis, FNPNurse Practitioner1528215076

Verify William Charles Conway in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A99863
    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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61% fewer Medicare Part D claims than the average surgical oncology physician in 2024

34 Medicare Part D claims for 29 beneficiaries, against an average of 87 among the 1,237 providers of this specialty who prescribed in Part D. 21 claims were for opioids.

  1. William Conway34
  2. Specialty average87

Most prescribed

  1. Oxycodone-Acetaminophen19 claims

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

Industry payments in 2024: $567.28

5 payments; by number, the most common kind was food and beverage; the largest payer was Medtronic, Inc. The 1,132 providers of this specialty with any payment received $4,224.74 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. William Conway$567.28
  2. Specialty average$4,224.74

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Bills Medicare through one group practice

  1. Sansum ClinicSanta Barbara, CA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

William Charles Conway among 250 surgical oncology physician records in California

William Charles Conway, MD is one of 250 surgical oncology physician records with a practice address in California. 84% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 36% of them.

  • NPI issued2007 · 36% of these records are older, 50% newer
  • In a Medicare fileYes · 84% of these records are
  • In the CMS Doctors and Clinicians fileYes · 74% of these records are
  • Graduated2001 · median 2004 among the 184 with a school on file
  • Record last updated2022 · 44% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2086X0206X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Surgical Oncology Physician providers in California

There are 250 surgical oncology physician records in California.

The 8 surgical oncology physician records with the nearest ZIP codes

  1. Rosa Choi, M.D.Santa Barbara, CA 931051376650713
  2. Katrina Mitchell, M.D.Santa Barbara, CA 931051225233760
  3. Shawn Steen, MDVentura, CA 930031366651259
  4. Parisa Malekzadeh, M.D.Corona, CA 928821992055149
  5. Valentina BonevOrange, CA 928681326312075
  6. John A Butler, MDOrange, CA 928681902986094
  7. Oliver Eng, M.D.Orange, CA 928681245556406
  8. James Jakowatz, MDOrange, CA 928681649225384

Common questions

What is William Charles Conway, MD's NPI number?

William Charles Conway, MD's National Provider Identifier (NPI) is 1962626390, issued on Apr 13, 2007. An NPI identifies a provider in billing; it is not a license.

Where is William Charles Conway, MD located?

The NPPES record lists a practice address at 540 W Pueblo St, Santa Barbara, CA, 93105. Phone: (805) 879-0670. Providers update this record themselves, so call before visiting.

How can I verify William Charles Conway, MD's license?

NPPES lists California license number A99863, 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.

How much does William Charles Conway, MD prescribe under Medicare Part D?

In 2024, William Charles Conway, MD had 34 Medicare Part D claims for 29 beneficiaries; the average among surgical oncology physician prescribers was 87. Part D covers Medicare prescriptions 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. Medicare files from data.cms.gov. 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.