Ok S. Ji, D.O.
Psychiatry Physician · Irvine, CA
Ok S. Ji, D.O. is a psychiatry physician with a practice address in Irvine, California, and NPI 1760943187, issued on Mar 28, 2019. Check the license (California 20A20531, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Ok S. Ji
- Credential
- D.O.
- Primary taxonomy
- Psychiatry Physician 2084P0800X
- License numbers
- 20A20531 CA
34.015634 OH
Self-reported in NPPES; status is on the state search - Practice location
- 3 Corporate Park Ste 170, Irvine, CA 92606
- Phone
- (855) 427-2778
- Enumerated
- Mar 28, 2019
- Record last updated
- Jun 8, 2023
- Fax
- (949) 900-2175
- Medicare enrollment
- Enrolled (PECOS I20240805001570); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest psychiatry physician records → All 8,673 in California → Look up another NPI →
Also registered at 3 Corporate Park Ste 170
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Jinyi Bae, PMHNP-BCPsychiatric/Mental Health Nurse Practitioner1871154526
- Taylor BlanchardClinical Social Worker1821719683
- Kelly Garrity, LMFTMarriage & Family Therapist1568490563
- Daniel Jin, MDPsychiatry Physician1609440601
- Casey Kohn, LMFTMarriage & Family Therapist1689429250
- Alfred WuPsychiatric/Mental Health Nurse Practitioner1982320172
Verify Ok S. Ji in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 20A20531Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
96% fewer Medicare Part D claims than the average psychiatry physician in 2024
36 Medicare Part D claims, against an average of 1,000 among the 35,054 providers of this specialty who prescribed in Part D.
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Bills Medicare through one group practice
- Mark David Levine MD Professional CorporationIrvine, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ok S. Ji among 8,673 psychiatry physician records in California
Ok S. Ji, D.O. is one of 8,673 psychiatry physician records with a practice address in California. 67% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2019, is newer than 85% of them.
- NPI issued2019 · 85% of these records are older, 13% newer
- In a Medicare fileYes · 67% of these records are
- In the CMS Doctors and Clinicians fileYes · 38% of these records are
- Graduated2019 · median 2005 among the 3,295 with a school on file
- Record last updated2023 · 54% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084P0800X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
54 psychiatry physician records list a practice address in Irvine
They are 54 of the 7,778 NPPES records with a practice address in Irvine, and 8,673 psychiatry physician records in California.
All 8,673 in California → Every provider in Irvine → Psychiatry Physician nationwide →
The 8 psychiatry physician records with the nearest ZIP codes
- Daniel Jin, MDIrvine, CA 926061609440601
- Roberta Schlesinger, MDIrvine, CA 926061346342961
- Tara Zahed, MDIrvine, CA 926061427707215
- Parvin Afshar, M.D.Irvine, CA 926041437247335
- Hanaa Fam, M.DIrvine, CA 926041558311456
- Yingxiang Li, MDIrvine, CA 926041548098940
- Ralph Lissaur, M.D.Irvine, CA 926041245287960
- Andrew Min, M.D.Irvine, CA 926041134398233
Common questions
What is Ok S. Ji, D.O.'s NPI number?
Ok S. Ji, D.O.'s National Provider Identifier (NPI) is 1760943187, issued on Mar 28, 2019. An NPI identifies a provider in billing; it is not a license.
Where is Ok S. Ji, D.O. located?
The NPPES record lists a practice address at 3 Corporate Park Ste 170, Irvine, CA, 92606. Phone: (855) 427-2778. Providers update this record themselves, so call before visiting.
How can I verify Ok S. Ji, D.O.'s license?
NPPES lists California license number 20A20531, 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.
How much does Ok S. Ji, D.O. prescribe under Medicare Part D?
In 2024, Ok S. Ji, D.O. had 36 Medicare Part D claims; the average among psychiatry physician prescribers was 1,000. Part D covers Medicare prescriptions 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.