Katie Troxell, PHD
Clinical Psychologist · Los Angeles, CA
Katie Troxell, PHD is a clinical psychologist with a practice address in Los Angeles, California, and NPI 1730940586, issued on Jan 18, 2024. Check the license (California PSY34804, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Katie Troxell
- Credential
- PHD
- Primary taxonomy
- Clinical Psychologist 103TC0700X
- License number
- PSY34804 CA
Self-reported in NPPES; status is on the state search - Practice location
- 10953 Massachusetts Ave, Los Angeles, CA 90024
- Phone
- (714) 914-6576
- Enumerated
- Jan 18, 2024
- Record last updated
- Jan 18, 2024
- Medicare enrollment
- Enrolled (PECOS I20240820001915); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest clinical psychologist records → All 12,647 in California → Look up another NPI →
Verify Katie Troxell in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license PSY34804Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through one group practice
- Southern California Neurology Medical Group, Inc.Pasadena, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Katie Troxell among 12,647 clinical psychologist records in California
Katie Troxell, PHD is one of 12,647 clinical psychologist records with a practice address in California. 9% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2024, is newer than 96% of them.
- NPI issued2024 · 96% of these records are older, 2% newer
- In a Medicare fileYes · 9% of these records are
- In the CMS Doctors and Clinicians fileYes · 19% of these records are
- Graduated2022 · median 2006 among the 2,424 with a school on file
- Record last updated2024 · 63% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 103TC0700X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
1,268 clinical psychologist records list a practice address in Los Angeles
They are 1,268 of the 69,537 NPPES records with a practice address in Los Angeles, and 12,647 clinical psychologist records in California.
All 12,647 in California → Every provider in Los Angeles → Clinical Psychologist nationwide →
The 8 clinical psychologist records with the nearest ZIP codes
- Debra Borys, PHDLos Angeles, CA 900241336157387
- Linda Ercoli, PH.DLos Angeles, CA 900241821104522
- Cheryl Feldmann, PH.D.Los Angeles, CA 900241295749901
- Susan Fisher, PSY.D.Los Angeles, CA 900241730117094
- Ali Ghassemi, PSY.D.Los Angeles, CA 900241942224381
- Charles Hinkin, PHDLos Angeles, CA 900241619900115
- William Horan, PH.D.Los Angeles, CA 900241356450514
- Ruth Lerner, PH.D.Los Angeles, CA 900241225052723
Common questions
What is Katie Troxell, PHD's NPI number?
Katie Troxell, PHD's National Provider Identifier (NPI) is 1730940586, issued on Jan 18, 2024. An NPI identifies a provider in billing; it is not a license.
Where is Katie Troxell, PHD located?
The NPPES record lists a practice address at 10953 Massachusetts Ave, Los Angeles, CA, 90024. Phone: (714) 914-6576. Providers update this record themselves, so call before visiting.
How can I verify Katie Troxell, PHD's license?
NPPES lists California license number PSY34804, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity 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.