NPPES file of Aug 9, 2026

Arthur Kornhaber, M.D.

Child & Adolescent Psychiatry Physician · Ojai, CA

Arthur Kornhaber, M.D. is a child & adolescent psychiatry physician with a practice address in Ojai, California, and NPI 1033117387, issued on Jul 11, 2005. Check the license (California C50453, 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
1033117387
Name
Arthur Kornhaber
Credential
M.D.
Primary taxonomy
Child & Adolescent Psychiatry Physician 2084P0804X
License number
C50453 CA
Self-reported in NPPES; status is on the state search
Practice location
108 Farnham RD, Ojai, CA 93023
Phone
(805) 640-0512
Enumerated
Jul 11, 2005
Record last updated
Feb 26, 2010 (not updated in 16 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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Verify Arthur Kornhaber in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license C50453
    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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94% fewer Medicare Part D claims than the average child & adolescent psychiatry physician in 2024

29 Medicare Part D claims, against an average of 504 among the 3,545 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.

  1. Arthur Kornhaber29
  2. Specialty average504

Most prescribed

  1. Lorazepam16 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.

Arthur Kornhaber among 1,009 child & adolescent psychiatry physician records in California

Arthur Kornhaber, M.D. is one of 1,009 child & adolescent psychiatry physician records with a practice address in California. 55% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.

  • NPI issued2005 · 0% of these records are older, 97% newer
  • In a Medicare fileYes · 55% of these records are
  • In the CMS Doctors and Clinicians fileNo · 21% of these records are
  • Record last updated2010 · 57% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084P0804X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Child & Adolescent Psychiatry Physician providers in California

There are 1,009 child & adolescent psychiatry physician records in California.

The 8 child & adolescent psychiatry physician records with the nearest ZIP codes

  1. Kevin Cox, MDOjai, CA 930231538214614
  2. Richard Ha, D.O.Oxnard, CA 930331831431287
  3. Heidi Dahl-Rosenbaum, MDOxnard, CA 930361851436638
  4. Sandor Dresnin, M.D.Camarillo, CA 930101407980873
  5. Amitha Prasad, M.D.Oxnard, CA 930361821436882
  6. Diane St. Fleur, M.D.Camarillo, CA 930101578874798
  7. Myung Ryang, MDVentura, CA 930031225259609
  8. Danielle Shaw, MDVentura, CA 930031093705915

Common questions

What is Arthur Kornhaber, M.D.'s NPI number?

Arthur Kornhaber, M.D.'s National Provider Identifier (NPI) is 1033117387, issued on Jul 11, 2005. An NPI identifies a provider in billing; it is not a license.

Where is Arthur Kornhaber, M.D. located?

The NPPES record lists a practice address at 108 Farnham RD, Ojai, CA, 93023. Phone: (805) 640-0512. Providers update this record themselves, so call before visiting.

How can I verify Arthur Kornhaber, M.D.'s license?

NPPES lists California license number C50453, 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 Arthur Kornhaber, M.D. prescribe under Medicare Part D?

In 2024, Arthur Kornhaber, M.D. had 29 Medicare Part D claims; the average among child & adolescent psychiatry physician prescribers was 504. 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.