NPPES file of Aug 9, 2026

Markus Horvath, M.D.

Psychiatry Physician · Long Beach, CA

Markus Horvath, M.D. is a psychiatry physician with a practice address in Long Beach, California, and NPI 1073632345, issued on Mar 28, 2007. Check the license (California A84400, as entered in NPPES) on the Medical Board of California; the federal record below is the public data PlainDoctor holds for this provider.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1073632345
Name
Markus Horvath
Credential
M.D.
Primary taxonomy
Psychiatry Physician 2084P0800X
License number
A84400 CA
Self-reported in NPPES; status is on the state search
Practice location
456 Elm Ave, Long Beach, CA 90802
Phone
(562) 437-6717
Enumerated
Mar 28, 2007
Record last updated
Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
Fax
(562) 590-6012
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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8 nearest psychiatry physician records → All 8,673 in California → Look up another NPI →

Also registered at 456 Elm Ave

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

  1. Rebecca AdamsCase Manager/Care Coordinator1083985980
  2. Majid Al-Sheikh, ACSWClinical Social Worker1639590755
  3. Daniel AmadorCase Manager/Care Coordinator1235424623
  4. Cecilia AmaroStudent in an Organized Health Care Education/Training Program1487320388
  5. Matthew AmbroseStudent in an Organized Health Care Education/Training Program1326699554
  6. Danielle AmezcuaCase Manager/Care Coordinator1164846978

Verify Markus Horvath in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A84400    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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Markus Horvath among 8,673 psychiatry physician records in California

Markus Horvath, M.D. 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 not. Its NPI, issued in 2007, is newer than 33% of them.

  • NPI issued2007 · 33% of these records are older, 48% newer
  • In a Medicare fileNo · 67% of these records are
  • In the CMS Doctors and Clinicians fileNo · 38% of these records are
  • Record last updated2007 · 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. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

All 8,673 in California → Every provider in Long Beach → Psychiatry Physician nationwide →

The 8 psychiatry physician records with the nearest ZIP codes

  1. Gol Ara, MDLong Beach, CA 908021780180687
  2. Nadia Barati, MDLong Beach, CA 908021497917207
  3. John Deirmenjian, M.D.Long Beach, CA 908021821009812
  4. Joshua Flatow, M.D.Long Beach, CA 908021487996302
  5. Rukan Huq, MDLong Beach, CA 908021033799168
  6. Nathan Lavid, M.D.Long Beach, CA 908021396803664
  7. Asheena Lee, M.D.Long Beach, CA 908021538425772
  8. Helen Liovin, MDLong Beach, CA 908021144347022

Common questions

What is Markus Horvath, M.D.'s NPI number?

Markus Horvath, M.D.'s National Provider Identifier (NPI) is 1073632345, issued on Mar 28, 2007. An NPI identifies a provider in billing; it is not a license.

Where is Markus Horvath, M.D. located?

The NPPES record lists a practice address at 456 Elm Ave, Long Beach, CA, 90802. Phone: (562) 437-6717. Providers update this record themselves, so call before visiting.

How can I verify Markus Horvath, M.D.'s license?

NPPES lists California license number A84400, 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.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. 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.