NPPES file of Aug 9, 2026

Thomas Dixon, MD, PHD

Psychiatry Physician · Chula Vista, CA

Thomas Dixon, MD, PHD is a psychiatry physician with a practice address in Chula Vista, California, and NPI 1144883190, issued on Apr 16, 2019. Check the license (California A179768, 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
1144883190
Name
Thomas Dixon
Credential
MD, PHD
Primary taxonomy
Psychiatry Physician 2084P0800X
License number
A179768 CA
Self-reported in NPPES; status is on the state search
Practice location
765 Third Ave Ste 100, Chula Vista, CA 91910
Phone
(619) 765-2684
Enumerated
Apr 16, 2019
Record last updated
Sep 23, 2025
Fax
(619) 765-2687
Medicare enrollment
Enrolled (PECOS I20230608002695); accepts Medicare assignment
Medical or professional school
Tufts University 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 765 Third Ave Ste 100

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

  1. Ankur Bindal, M.D., M.P.HPsychiatry Physician1588820880
  2. Julie CabadingPsychiatric/Mental Health Nurse Practitioner1346944287
  3. Catherine Dang, PMHNPPsychiatric/Mental Health Nurse Practitioner1528715943
  4. Molly McLarenPsychiatric/Mental Health Nurse Practitioner1922757145

Verify Thomas Dixon in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A179768
    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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64% fewer Medicare Part D claims than the average psychiatry physician in 2024

355 Medicare Part D claims for 44 beneficiaries, against an average of 1,000 among the 35,054 providers of this specialty who prescribed in Part D.

  1. Thomas Dixon355
  2. Specialty average1,000

Most prescribed

  1. Gabapentin40 claims
  2. Quetiapine Fumarate38 claims
  3. Mirtazapine26 claims
  4. Bupropion Xl21 claims
  5. Venlafaxine Hcl Er19 claims
  6. Aripiprazole17 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.

Bills Medicare through one group practice

  1. Kab Medical Group IncChula Vista, CA

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

Thomas Dixon among 8,673 psychiatry physician records in California

Thomas Dixon, MD, PHD is one of 8,673 psychiatry physician records with a practice address in California. 67% 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 85% of them.

  • NPI issued2019 · 85% of these records are older, 13% newer
  • In a Medicare fileYes · 67% of these records are
  • In the CMS Doctors and Clinicians fileYes · 38% of these records are
  • Graduated2019 · median 2005 among the 3,295 with a school on file
  • Record last updated2025 · 54% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084P0800X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Psychiatry Physician providers in California

There are 8,673 psychiatry physician records in California.

The 8 psychiatry physician records with the nearest ZIP codes

  1. Ankur Bindal, M.D., M.P.HChula Vista, CA 919101588820880
  2. Jared BlommelChula Vista, CA 919101841753712
  3. Craig Brown, MDChula Vista, CA 919101730239989
  4. Louis Fontana, M.D.Chula Vista, CA 919101780734343
  5. Tomonori Fukui, M.D.Chula Vista, CA 919101366519670
  6. Henry Kane, M.D.Chula Vista, CA 919101609839273
  7. Yaroslav Kushnir, M.D.Chula Vista, CA 919101730274176
  8. Russell Lim, M.D.Chula Vista, CA 919101831173970

Common questions

What is Thomas Dixon, MD, PHD's NPI number?

Thomas Dixon, MD, PHD's National Provider Identifier (NPI) is 1144883190, issued on Apr 16, 2019. An NPI identifies a provider in billing; it is not a license.

Where is Thomas Dixon, MD, PHD located?

The NPPES record lists a practice address at 765 Third Ave Ste 100, Chula Vista, CA, 91910. Phone: (619) 765-2684. Providers update this record themselves, so call before visiting.

How can I verify Thomas Dixon, MD, PHD's license?

NPPES lists California license number A179768, 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 Thomas Dixon, MD, PHD prescribe under Medicare Part D?

In 2024, Thomas Dixon, MD, PHD had 355 Medicare Part D claims for 44 beneficiaries; the average among psychiatry physician prescribers was 1,000. 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.