John Horton
Psychiatry Physician · Los Angeles, CA
John Horton is a psychiatry physician with a practice address in Los Angeles, California, and NPI 1538663513, issued on Mar 22, 2018. Check the license (California A166834, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- John Horton
- Primary taxonomy
- Psychiatry Physician 2084P0800X
- License number
- A166834 CA
Self-reported in NPPES; status is on the state search - Practice location
- 300 Ucla Medical Plz Ste 2200, Los Angeles, CA 90095
- Phone
- (310) 825-9989
- Enumerated
- Mar 22, 2018
- Record last updated
- Sep 21, 2023
- Medicare enrollment
- Enrolled (PECOS I20230807003038); accepts Medicare assignment
- Medical or professional school
- University Of California, Geffen School Of Medicine, 2018
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest psychiatry physician records → All 8,673 in California → Look up another NPI →
Also registered at 300 Ucla Medical Plz Ste 2200
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Dina Aladort, MSWClinical Social Worker1801178132
- Hewa ArtinPsychiatry Physician1487151973
- Anya Bershad, MD,PHDPsychiatry Physician1265993059
- Timothy Beyer, PH.D., L.P.Clinical Psychologist1679644926
Verify John Horton in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A166834Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
84% fewer Medicare Part D claims than the average psychiatry physician in 2024
155 Medicare Part D claims for 23 beneficiaries, against an average of 1,000 among the 35,054 providers of this specialty who prescribed in Part D.
Most prescribed
- Gabapentin21 claims
- Bupropion Xl19 claims
- Duloxetine Hcl19 claims
- Trazodone Hcl16 claims
- Mirtazapine13 claims
- Escitalopram Oxalate11 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 86.1 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through 2 group practices
- The Regents OF The University OF CaliforniaLos Angeles, CA
- UC RegentsLos Angeles, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
John Horton among 8,673 psychiatry physician records in California
John Horton 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 2018, is newer than 82% of them.
- NPI issued2018 · 82% of these records are older, 15% newer
- In a Medicare fileYes · 67% of these records are
- In the CMS Doctors and Clinicians fileYes · 38% of these records are
- Graduated2018 · median 2005 among the 3,295 with a school on file
- Record last updated2023 · 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).
987 psychiatry physician records list a practice address in Los Angeles
They are 987 of the 69,537 NPPES records with a practice address in Los Angeles, and 8,673 psychiatry physician records in California.
All 8,673 in California → Every provider in Los Angeles → Psychiatry Physician nationwide →
The 8 psychiatry physician records with the nearest ZIP codes
- Natalie Ayars, MDLos Angeles, CA 900951285665364
- Laurie Casaus, MDLos Angeles, CA 900951093755449
- Philip Cogen, M.D.Los Angeles, CA 900951831130426
- Melita Daley, MDLos Angeles, CA 900951982635058
- Michael Enenbach, MDLos Angeles, CA 900951477583953
- Stephanny Freeman, PHDLos Angeles, CA 900951891732194
- Helen Lavretsky, M.D.Los Angeles, CA 900951881627404
- Patricia Lester, MDLos Angeles, CA 900951760415277
Common questions
What is John Horton's NPI number?
John Horton's National Provider Identifier (NPI) is 1538663513, issued on Mar 22, 2018. An NPI identifies a provider in billing; it is not a license.
Where is John Horton located?
The NPPES record lists a practice address at 300 Ucla Medical Plz Ste 2200, Los Angeles, CA, 90095. Phone: (310) 825-9989. Providers update this record themselves, so call before visiting.
How can I verify John Horton's license?
NPPES lists California license number A166834, 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 John Horton prescribe under Medicare Part D?
In 2024, John Horton had 155 Medicare Part D claims for 23 beneficiaries; the average among psychiatry physician prescribers was 1,000. Part D covers Medicare prescriptions only.
What is John Horton's MIPS final score?
The 2023 MIPS final score is 86.1 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.