NPPES file of Aug 9, 2026

Tom Maxim

Otolaryngology Physician · Thousand Oaks, CA

Tom Maxim is an otolaryngology physician with a practice address in Thousand Oaks, California, and NPI 1801356464, issued on Mar 20, 2019. Check the license (California A181999, 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
1801356464
Name
Tom Maxim
Primary taxonomy
Otolaryngology Physician 207Y00000X
License number
A181999 CA
Self-reported in NPPES; status is on the state search
Practice location
100 Moody CT Ste 200, Thousand Oaks, CA 91360
Phone
(805) 418-3500
Enumerated
Mar 20, 2019
Record last updated
Aug 5, 2024
Medicare enrollment
Enrolled (PECOS I20240613002054); accepts Medicare assignment
Medical or professional school
University Of Southern California Keck School Of Medicine, 2019
Telehealth
Offers telehealth (CMS)
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 100 Moody CT Ste 200

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

  1. Michael Albertson, M.D.Gastroenterology Physician1114035128
  2. Jose-Nitram Aliling, M.D.Internal Medicine Physician1912177759
  3. Jennifer Arussi, MS, RDNRegistered Dietitian1114329281
  4. Lauren Beshay, MDEndocrinology, Diabetes & Metabolism Physician1073010757
  5. Roy Bryan, M.D.Diagnostic Radiology Physician1396021648
  6. Michael Dorsi, MDNeurological Surgery Physician1942355854

Verify Tom Maxim in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A181999
    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

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79% fewer Medicare Part D claims than the average otolaryngology physician in 2024

115 Medicare Part D claims for 64 beneficiaries, against an average of 541 among the 8,339 providers of this specialty who prescribed in Part D. 15 claims were for opioids.

  1. Tom Maxim115
  2. Specialty average541

Most prescribed

  1. Ipratropium Bromide14 claims
  2. Amoxicillin-Clavulanate Potass13 claims
  3. Azelastine Hcl13 claims
  4. Fluticasone Propionate13 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: $432.01

5 payments; by number, the most common kind was food and beverage; the largest payer was PolyNovo North America LLC. The 6,429 providers of this specialty with any payment received $1,922.50 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Tom Maxim$432.01
  2. Specialty average$1,922.50

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. The Regents OF The University OF CaliforniaThousand Oaks, CA

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

Tom Maxim among 1,212 otolaryngology physician records in California

Tom Maxim is one of 1,212 otolaryngology 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 2019, is newer than 91% of them.

  • NPI issued2019 · 91% of these records are older, 7% newer
  • In a Medicare fileYes · 80% of these records are
  • In the CMS Doctors and Clinicians fileYes · 67% of these records are
  • Graduated2019 · median 2004 among the 818 with a school on file
  • Record last updated2024 · 63% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Y00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Otolaryngology Physician providers in California

There are 1,212 otolaryngology physician records in California.

The 8 otolaryngology physician records with the nearest ZIP codes

  1. Oliver Gantz, M.D.Thousand Oaks, CA 913601952758260
  2. Natalie Kadin, MDThousand Oaks, CA 913601457594160
  3. Jeffrey Tseng, M.D.Thousand Oaks, CA 913601205990868
  4. John Hernandez, M.D.Westlake Village, CA 913611043363997
  5. Soochuen Kho, M.D.Thousand Oaks, CA 913611881626661
  6. Jaesung Lee, M.D.Thousand Oaks, CA 913611376550715
  7. Kelvin Loh, M.D.Thousand Oaks, CA 913611326174509
  8. Andrew Mikaelian, M.D.Westlake Village, CA 913611891740973

Common questions

What is Tom Maxim's NPI number?

Tom Maxim's National Provider Identifier (NPI) is 1801356464, issued on Mar 20, 2019. An NPI identifies a provider in billing; it is not a license.

Where is Tom Maxim located?

The NPPES record lists a practice address at 100 Moody CT Ste 200, Thousand Oaks, CA, 91360. Phone: (805) 418-3500. Providers update this record themselves, so call before visiting.

How can I verify Tom Maxim's license?

NPPES lists California license number A181999, 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 Tom Maxim prescribe under Medicare Part D?

In 2024, Tom Maxim had 115 Medicare Part D claims for 64 beneficiaries; the average among otolaryngology physician prescribers was 541. 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.