NPPES file of Aug 9, 2026

Thomas Grant Carlton, M.D.

Psychiatry Physician · Lancaster, CA

Thomas Grant Carlton, M.D. is a psychiatry physician with a practice address in Lancaster, California, and NPI 1912079518, issued on Nov 15, 2006. Check the license (California A24509, 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
1912079518
Name
Thomas Grant Carlton
Credential
M.D.
Primary taxonomy
Psychiatry Physician 2084P0800X
License numbers
A24509 CA
60455 TN
0101030772 VA
MD0026639 WA
Self-reported in NPPES; status is on the state search
Practice location
43839 15TH St W, Lancaster, CA 93534
Phone
(661) 945-5984
Enumerated
Nov 15, 2006
Record last updated
May 18, 2021 (not updated in 5 years: call before relying on the address or phone)
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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Also registered at 43839 15TH St W

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

  1. Dennis Anderson, LCSWClinical Social Worker1992336044
  2. Manuel Arroyo, M.D.Family Medicine Physician1508860412
  3. Edgardo Barcelona, M.D.Surgery Physician1013028315
  4. Nathaniel Bautista, M.D.Occupational Medicine Physician1538270822
  5. Darbi CameronPharmacist1477854917
  6. Daphany Connor, NURSE PRACTITIONERFamily Nurse Practitioner1942992532

Verify Thomas Grant Carlton in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A24509    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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18% fewer Medicare Part D claims than the average psychiatry physician in 2024

816 Medicare Part D claims for 63 beneficiaries, against an average of 1,000 among the 35,054 providers of this specialty who prescribed in Part D. Brand-name drugs were 3% of claims.

  1. Thomas Carlton816
  2. Specialty average1,000

Most prescribed

  1. Escitalopram Oxalate64 claims
  2. Citalopram Hbr58 claims
  3. Quetiapine Fumarate57 claims
  4. Bupropion Xl56 claims
  5. Sertraline Hcl55 claims
  6. Doxepin Hcl47 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.

Psychiatry Physician providers in California

There are 8,673 psychiatry physician records in California.

All 8,673 in California → Every provider in Lancaster →

Other psychiatry physician records in California

  1. Nancy Aaen, MDNapa, CA1609816669
  2. Criselda Abad-Santos, M.D.Woodland Hills, CA1760461826
  3. Mekabiz Abaian, MDSan Bernardino, CA1891090163
  4. Brenda Abarca, MDTorrance, CA1407485527
  5. Pilar Abascal, M.D.Los Angeles, CA1730528191
  6. Michele Abbasi, M.D.Westlake Village, CA1093940330
  7. Zohaib AbbasiMartinez, CA1013392224
  8. Sandy Abdelkedous, MDFresno, CA1306093109
  9. Nancy Abdelmalak, M.D.Elk Grove, CA1912137498
  10. Ezzat Abdelmalek, M.DDana Point, CA1992828826

Common questions

What is Thomas Grant Carlton, M.D.'s NPI number?

Thomas Grant Carlton, M.D.'s National Provider Identifier (NPI) is 1912079518, issued on Nov 15, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Thomas Grant Carlton, M.D. located?

The NPPES record lists a practice address at 43839 15TH St W, Lancaster, CA, 93534. Phone: (661) 945-5984. Providers update this record themselves, so call before visiting.

How can I verify Thomas Grant Carlton, M.D.'s license?

NPPES lists California license number A24509, 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 Grant Carlton, M.D. prescribe under Medicare Part D?

In 2024, Thomas Grant Carlton, M.D. had 816 Medicare Part D claims for 63 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.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.