Gerald Bernard O'Day, PH.D.
Clinical Psychologist · Arcadia, CA
Gerald Bernard O'Day, PH.D. is a clinical psychologist with a practice address in Arcadia, California, and NPI 1487737235, issued on Oct 23, 2006. Check the license (California 16011, as entered in NPPES) with the California board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Gerald Bernard O'Day
- Credential
- PH.D.
- Primary taxonomy
- Clinical Psychologist 103TC0700X
- License number
- 16011 CA
Self-reported in NPPES; status is on the state search - Practice location
- 330 E Live Oak Ave, Arcadia, CA 91006
- Phone
- (626) 821-5890
- Enumerated
- Oct 23, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest clinical psychologist records → All 12,647 in California → Look up another NPI →
Also registered at 330 E Live Oak Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Fatima Agregado, L.C.S.W.Clinical Social Worker1083700892
- Jung AhnClinical Social Worker1396980363
- Mary Lou Alarcon, RNPsychiatric/Mental Health Registered Nurse1750531133
- Maria AlferezDay Training/Habilitation Specialist1053600205
- Diana AlonzoSocial Worker1063133965
Verify Gerald Bernard O'Day in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 16011Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Gerald Bernard O'Day among 12,647 clinical psychologist records in California
Gerald Bernard O'Day, PH.D. 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 not. Its NPI, issued in 2006, is newer than 1% of them.
- NPI issued2006 · 1% of these records are older, 80% newer
- In a Medicare fileNo · 9% of these records are
- In the CMS Doctors and Clinicians fileNo · 19% of these records are
- Record last updated2007 · 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).
26 clinical psychologist records list a practice address in Arcadia
They are 26 of the 2,033 NPPES records with a practice address in Arcadia, and 12,647 clinical psychologist records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 12,647 in California → Every provider in Arcadia → Clinical Psychologist nationwide →
The 8 clinical psychologist records with the nearest ZIP codes
- John Chavez, PH.D.Arcadia, CA 910061477640787
- Karen Earnest, PHDArcadia, CA 910061427003615
- Rizaldy Ferrer, PHDArcadia, CA 910061699899872
- Karen Gandy-Biferno, PH.DArcadia, CA 910061982678488
- David Kattenhorn, PSYDArcadia, CA 910061679623706
- Richard Klein, PH.DArcadia, CA 910061689865735
- Gaston Nguyen, PH.D.Arcadia, CA 910061285655670
- Morris Powazek, PHDArcadia, CA 910061487669917
Common questions
What is Gerald Bernard O'Day, PH.D.'s NPI number?
Gerald Bernard O'Day, PH.D.'s National Provider Identifier (NPI) is 1487737235, issued on Oct 23, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Gerald Bernard O'Day, PH.D. located?
The NPPES record lists a practice address at 330 E Live Oak Ave, Arcadia, CA, 91006. Phone: (626) 821-5890. Providers update this record themselves, so call before visiting.
How can I verify Gerald Bernard O'Day, PH.D.'s license?
NPPES lists California license number 16011, 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. 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.