NPPES file of Aug 9, 2026

Fiona Michelle Garlich Horner, M.D.

Medical Toxicology (Emergency Medicine) Physician · Los Angeles, CA

Fiona Michelle Garlich Horner, M.D. is a medical toxicology (emergency medicine) physician with a practice address in Los Angeles, California, and NPI 1083880256, issued on May 7, 2008. Check the license (California A137178, 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
1083880256
Name
Fiona Michelle Garlich Horner
Credential
M.D.
Primary taxonomy
Medical Toxicology (Emergency Medicine) Physician 207PT0002X
License number
A137178 CA
Self-reported in NPPES; status is on the state search
Practice location
1500 San Pablo St, Los Angeles, CA 90033
Phone
(323) 442-9922
Enumerated
May 7, 2008
Record last updated
Nov 27, 2023
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 1500 San Pablo St

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

  1. Matthew Abad-Santos, MDVascular & Interventional Radiology Physician1487041406
  2. Ali Abanobi, CRNACertified Registered Nurse Anesthetist1740756196
  3. Emily AbbottCardiopulmonary Physical Therapist1053116251
  4. Hadi Abou El Hassan, MDNeurology Physician1053995720
  5. Taaha Adamji, MDStudent in an Organized Health Care Education/Training Program1770414377
  6. Nikhil AggarwalStudent in an Organized Health Care Education/Training Program1144029596

Verify Fiona Michelle Garlich Horner in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A137178
    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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Industry payments in 2024: $22.03

3 payments; by number, the most common kind was education; the largest payer was Btg International, Inc. The 21 providers of this specialty with any payment received $1,426.84 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Fiona Garlich Horner$22.03
  2. Specialty average$1,426.84

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Medical Toxicology (Emergency Medicine) Physician providers in California

There are 12 medical toxicology (emergency medicine) physician records in California.

Other medical toxicology (emergency medicine) physician records in California

  1. Santiago Batista Minaya, MDRancho Mirage, CA1114555695
  2. Nicklaus Brandehoff, M.D.Fresno, CA1780942599
  3. James Chenoweth, M.D.Sacramento, CA1912214305
  4. Nathan Friedman, MDRancho Mirage, CA1992236756
  5. Henrik Galust, MDRancho Mirage, CA1932696093
  6. Scott Hardy, M.D., M.P.H.Santa Ana, CA1053468975
  7. John KellerRancho Mirage, CA1467956433
  8. Kevin Lieu, MDSan Francisco, CA1891342044
  9. Gary Ordog, M.D.Newhall, CA1205954955
  10. James Rhee, MDLoma Linda, CA1528028933

Common questions

What is Fiona Michelle Garlich Horner, M.D.'s NPI number?

Fiona Michelle Garlich Horner, M.D.'s National Provider Identifier (NPI) is 1083880256, issued on May 7, 2008. An NPI identifies a provider in billing; it is not a license.

Where is Fiona Michelle Garlich Horner, M.D. located?

The NPPES record lists a practice address at 1500 San Pablo St, Los Angeles, CA, 90033. Phone: (323) 442-9922. Providers update this record themselves, so call before visiting.

How can I verify Fiona Michelle Garlich Horner, M.D.'s license?

NPPES lists California license number A137178, 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. 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.