NPPES file of Aug 9, 2026

Alexander Besser, DO

Clinical Neurophysiology Physician · Monterey, CA

Alexander Besser, DO is a clinical neurophysiology physician with a practice address in Monterey, California, and NPI 1700413077, issued on Mar 25, 2020. Check the license (California 20A22412, 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
1700413077
Name
Alexander Besser
Credential
DO
Primary taxonomy
Clinical Neurophysiology Physician 2084N0600X
License number
20A22412 CA
Self-reported in NPPES; status is on the state search
Practice location
23625 Holman Hwy, Monterey, CA 93940
Phone
(831) 624-5311
Enumerated
Mar 25, 2020
Record last updated
Apr 30, 2026
Medicare enrollment
Enrolled (PECOS I20250912002731); accepts Medicare assignment
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 23625 Holman Hwy

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

  1. Jerry Ainsworth, M.D.Psychiatry Physician1720099427
  2. Andres Aldrete, M.D.Emergency Medicine Physician1679580831
  3. Ian Atkinson, M.D.Hospitalist Physician1205173580
  4. Matthew Awerbuck, M.D.Internal Medicine Physician1104189828
  5. Rachel Badger, PHARMDPharmacist Clinician (PhC)/ Clinical Pharmacy Specialist1942055132
  6. Shoshauna Baer, M.D.Hospitalist Physician1881126209

Verify Alexander Besser in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license 20A22412
    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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98% fewer Medicare Part D claims than the average clinical neurophysiology physician in 2024

33 Medicare Part D claims for 16 beneficiaries, against an average of 1,586 among the 319 providers of this specialty who prescribed in Part D.

  1. Alexander Besser33
  2. Specialty average1,586

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: $157.23

2 payments; by number, the most common kind was food and beverage; the largest payer was Emd Serono, Inc. The 260 providers of this specialty with any payment received $7,345.06 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Alexander Besser$157.23
  2. Specialty average$7,345.06

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. Montage Medical GroupMonterey, CA

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

Alexander Besser among 71 clinical neurophysiology physician records in California

Alexander Besser, DO is one of 71 clinical neurophysiology physician records with a practice address in California. 80% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2020, is newer than 90% of them.

  • NPI issued2020 · 90% of these records are older, 3% newer
  • In a Medicare fileYes · 80% of these records are
  • In the CMS Doctors and Clinicians fileYes · 69% of these records are
  • Graduated2020 · median 2007 among the 49 with a school on file
  • Record last updated2026 · 37% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084N0600X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Clinical Neurophysiology Physician providers in California

There are 71 clinical neurophysiology physician records in California.

The 8 clinical neurophysiology physician records with the nearest ZIP codes

  1. Michael Aminoff, M.D.San Francisco, CA 941431598875833
  2. Maria Roberta Cilio, MD, PHDSan Francisco, CA 941431629329974
  3. Heidi Kirsch, M.D.San Francisco, CA 941431447287248
  4. Mark Vonzastrow, MDSan Francisco, CA 941581063686202
  5. Sami BajwaFresno, CA 937111437579851
  6. Hewitt Ryan, M.D.Fresno, CA 937031710927850
  7. Loveneet Singh, M.D.Fresno, CA 937011952560377
  8. Michael Medeiros, M.D.Selma, CA 936621417120866

Common questions

What is Alexander Besser, DO's NPI number?

Alexander Besser, DO's National Provider Identifier (NPI) is 1700413077, issued on Mar 25, 2020. An NPI identifies a provider in billing; it is not a license.

Where is Alexander Besser, DO located?

The NPPES record lists a practice address at 23625 Holman Hwy, Monterey, CA, 93940. Phone: (831) 624-5311. Providers update this record themselves, so call before visiting.

How can I verify Alexander Besser, DO's license?

NPPES lists California license number 20A22412, 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 Alexander Besser, DO prescribe under Medicare Part D?

In 2024, Alexander Besser, DO had 33 Medicare Part D claims for 16 beneficiaries; the average among clinical neurophysiology physician prescribers was 1,586. 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.