NPPES file of Aug 9, 2026

Oscar Oo, PSY.D.

Clinical Psychologist · Newport Beach, CA

Oscar Oo, PSY.D. is a clinical psychologist with a practice address in Newport Beach, California, and NPI 1427128156, issued on Nov 9, 2006. Check the license (California PSY22699, 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.

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

NPPES recordNPPES file of Aug 9, 2026
1427128156
Name
Oscar Oo
Credential
PSY.D.
Primary taxonomy
Clinical Psychologist 103TC0700X
License number
PSY22699 CA
Self-reported in NPPES; status is on the state search
Practice location
4000 Macarthur Blvd, Newport Beach, CA 92660
Phone
(949) 648-3704
Enumerated
Nov 9, 2006
Record last updated
Jan 11, 2017 (not updated in 9 years: call before relying on the address or phone)
Fax
(714) 352-6471
Medicare enrollment
Enrolled (PECOS I20100203000806); accepts Medicare assignment
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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8 nearest clinical psychologist records → All 12,647 in California → Look up another NPI →

Also registered at 4000 Macarthur Blvd

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

  1. Luis Becerra, PSYDPsychologist1902155997
  2. Jeannie Elbing, LCSWClinical Social Worker1255912994
  3. Cynthia FickenMarriage & Family Therapist1518559491
  4. Christine Golden, LMFTMarriage & Family Therapist1215474960
  5. Natalie Herriott, AMFT, APCCMarriage & Family Therapist1215701461
  6. Abigail McLennandMarriage & Family Therapist1396497269

Verify Oscar Oo in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich California board licenses this profession
    Search for license PSY22699    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
Find the California license search

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Oscar Oo among 12,647 clinical psychologist records in California

Oscar Oo, PSY.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 fileYes · 19% of these records are
  • Graduated2007 · median 2006 among the 2,424 with a school on file
  • Record last updated2017 · 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).

123 clinical psychologist records list a practice address in Newport Beach

They are 123 of the 4,414 NPPES records with a practice address in Newport Beach, 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 Newport Beach → Clinical Psychologist nationwide →

The 8 clinical psychologist records with the nearest ZIP codes

  1. Vance Becker, PH.D.Newport Beach, CA 926601013912443
  2. Alexandra Chiara, PH.D.Newport Beach, CA 926601528166808
  3. Steven Davidson, PHDNewport Beach, CA 926601487767992
  4. Jennifer Fee, PSY.D.Newport Beach, CA 926601932101326
  5. Michael Fenton, PHDNewport Beach, CA 926601881654846
  6. Steven Harris, PH.D.Newport Beach, CA 926601487673927
  7. Marsha Hewlett, PH.D.Newport Beach, CA 926601316057797
  8. Christopher Ingalls, PHDNewport Beach, CA 926601497862619

Common questions

What is Oscar Oo, PSY.D.'s NPI number?

Oscar Oo, PSY.D.'s National Provider Identifier (NPI) is 1427128156, issued on Nov 9, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Oscar Oo, PSY.D. located?

The NPPES record lists a practice address at 4000 Macarthur Blvd, Newport Beach, CA, 92660. Phone: (949) 648-3704. Providers update this record themselves, so call before visiting.

How can I verify Oscar Oo, PSY.D.'s license?

NPPES lists California license number PSY22699, 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.

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.