NPPES file of Aug 9, 2026

William Samuel, M.D.

Neurology Physician · Escondido, CA

William Samuel, M.D. is a neurology physician with a practice address in Escondido, California, and NPI 1396709382, issued on Apr 14, 2006. Check the license (California G70307, 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
1396709382
Name
William Samuel
Credential
M.D.
Primary taxonomy
Neurology Physician 2084N0400X
License number
G70307 CA
Self-reported in NPPES; status is on the state search
Practice location
661 E Pennsylvania Ave, Escondido, CA 92025
Phone
(760) 746-5813
Enumerated
Apr 14, 2006
Record last updated
Jul 13, 2026
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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Verify William Samuel in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license G70307
    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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83% fewer Medicare Part D claims than the average neurology physician in 2024

236 Medicare Part D claims for 75 beneficiaries, against an average of 1,370 among the 15,005 providers of this specialty who prescribed in Part D.

  1. William Samuel236
  2. Specialty average1,370

Most prescribed

  1. Levetiracetam34 claims
  2. Carbidopa-Levodopa Er24 claims
  3. Carbidopa-Levodopa21 claims
  4. Propranolol Hcl Er18 claims
  5. Memantine Hcl15 claims
  6. Primidone13 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.

William Samuel among 2,339 neurology physician records in California

William Samuel, M.D. is one of 2,339 neurology physician records with a practice address in California. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 4% of them.

  • NPI issued2006 · 4% of these records are older, 59% newer
  • In a Medicare fileYes · 81% of these records are
  • In the CMS Doctors and Clinicians fileNo · 70% of these records are
  • Record last updated2026 · 55% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084N0400X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Neurology Physician providers in California

There are 2,339 neurology physician records in California.

The 8 neurology physician records with the nearest ZIP codes

  1. Kenneth Khoury, M.D.Escondido, CA 920251215969597
  2. Michael Bayer, MDEncinitas, CA 920241386974756
  3. Tresa McGranahan, M.D., PH.D.Encinitas, CA 920241639519010
  4. Kenneth Selzer, M.D.Encinitas, CA 920241528269271
  5. Patrick Huott, M.D.Escondido, CA 920291366452781
  6. Chunyang Wang, MDEscondido, CA 920291386890770
  7. Adriana Sofia Perilla, M.D.El Cajon, CA 920201871911552
  8. Emily Engel, M.D.La Jolla, CA 920371093787038

Common questions

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

William Samuel, M.D.'s National Provider Identifier (NPI) is 1396709382, issued on Apr 14, 2006. An NPI identifies a provider in billing; it is not a license.

Where is William Samuel, M.D. located?

The NPPES record lists a practice address at 661 E Pennsylvania Ave, Escondido, CA, 92025. Phone: (760) 746-5813. Providers update this record themselves, so call before visiting.

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

NPPES lists California license number G70307, 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 Samuel, M.D. prescribe under Medicare Part D?

In 2024, William Samuel, M.D. had 236 Medicare Part D claims for 75 beneficiaries; the average among neurology physician prescribers was 1,370. 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.