Katherine Ko, PH.D.
Clinical Psychologist · Irvine, CA
Katherine Ko, PH.D. is a clinical psychologist with a practice address in Irvine, California, and NPI 1871524546, issued on Jul 5, 2006. Check the license (California PSY18545, 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
- Katherine Ko
- Credential
- PH.D.
- Primary taxonomy
- Clinical Psychologist 103TC0700X
- License number
- PSY18545 CA
Self-reported in NPPES; status is on the state search - Practice location
- 4000 Barranca Pkwy Ste 250, Irvine, CA 92604
- Phone
- (949) 262-3696
- Enumerated
- Jul 5, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (949) 262-3299
- Entity
- Type 1 · individual
Also registered at 4000 Barranca Pkwy Ste 250
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Katherine Ko in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license PSY18545Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
140 clinical psychologist records list a practice address in Irvine
They are 140 of the 7,778 NPPES records with a practice address in Irvine, and 12,647 clinical psychologist records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 140 in Irvine → All 12,647 in California → Every provider in Irvine →
Other clinical psychologist records in California
- Tanya Aaen, PH.D.Martinez, CA1477518561
- Jack Aamot, PSY.D.Napa, CA1770711210
- Brian Abary, PSY.DLos Angeles, CA1538354832
- Tatevik Abaryan, PH.D.Pacoima, CA1952682619
- Liana Abascal, PH.D.San Diego, CA1073740569
- Jessica Abdalla, PHDWalnut Creek, CA1558069211
- Mohamed Abdallah, PSY.DEl Centro, CA1912430851
- Megan Abdolrashidi, PSYDGilroy, CA1093293094
- Keri Abdullah, PH.D.San Diego, CA1699840587
- Qutayba Abdullatif, PH.D.Pasadena, CA1134667751
Common questions
What is Katherine Ko, PH.D.'s NPI number?
Katherine Ko, PH.D.'s National Provider Identifier (NPI) is 1871524546, issued on Jul 5, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Katherine Ko, PH.D. located?
The NPPES record lists a practice address at 4000 Barranca Pkwy Ste 250, Irvine, CA, 92604. Phone: (949) 262-3696. Providers update this record themselves, so call before visiting.
How can I verify Katherine Ko, PH.D.'s license?
NPPES lists California license number PSY18545, 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.