Grace Eun Kwon, D.O.
Psychiatry Physician · Tustin, CA
Grace Eun Kwon, D.O. is a psychiatry physician with a practice address in Tustin, California, and NPI 1326347873, issued on Mar 23, 2011. Check the license (California 20A12013, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Grace Eun Kwon
- Credential
- D.O.
- Primary taxonomy
- Psychiatry Physician 2084P0800X
- License number
- 20A12013 CA
Self-reported in NPPES; status is on the state search - Practice location
- 17452 Irvine Blvd Ste 213, Tustin, CA 92780
- Phone
- (714) 371-6977
- Enumerated
- Mar 23, 2011
- Record last updated
- May 7, 2026
- Fax
- (800) 836-2401
- Medicare enrollment
- Enrolled (PECOS I20160908000250); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
Also registered at 17452 Irvine Blvd Ste 213
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Stephanie Bayly, LPCCProfessional Counselor1194581652
Verify Grace Eun Kwon in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 20A12013Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
37% fewer Medicare Part D claims than the average psychiatry physician in 2024
631 Medicare Part D claims for 21 beneficiaries, against an average of 1,000 among the 35,054 providers of this specialty who prescribed in Part D. Brand-name drugs were 4% of claims.
Most prescribed
- Quetiapine Fumarate79 claims
- Gabapentin50 claims
- Lamotrigine38 claims
- Clonazepam36 claims
- Haloperidol30 claims
- Escitalopram Oxalate24 claims
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 2 group practices
- Grace Kwon CorporationTustin, CA
- Harbor Psychiatry And Mental Health Professional CorporationNewport Beach, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Psychiatry Physician providers in California
There are 8,673 psychiatry physician records in California.
Other psychiatry physician records in California
- Nancy Aaen, MDNapa, CA1609816669
- Criselda Abad-Santos, M.D.Woodland Hills, CA1760461826
- Mekabiz Abaian, MDSan Bernardino, CA1891090163
- Brenda Abarca, MDTorrance, CA1407485527
- Pilar Abascal, M.D.Los Angeles, CA1730528191
- Michele Abbasi, M.D.Westlake Village, CA1093940330
- Zohaib AbbasiMartinez, CA1013392224
- Sandy Abdelkedous, MDFresno, CA1306093109
- Nancy Abdelmalak, M.D.Elk Grove, CA1912137498
- Ezzat Abdelmalek, M.DDana Point, CA1992828826
Common questions
What is Grace Eun Kwon, D.O.'s NPI number?
Grace Eun Kwon, D.O.'s National Provider Identifier (NPI) is 1326347873, issued on Mar 23, 2011. An NPI identifies a provider in billing; it is not a license.
Where is Grace Eun Kwon, D.O. located?
The NPPES record lists a practice address at 17452 Irvine Blvd Ste 213, Tustin, CA, 92780. Phone: (714) 371-6977. Providers update this record themselves, so call before visiting.
How can I verify Grace Eun Kwon, D.O.'s license?
NPPES lists California license number 20A12013, 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 Grace Eun Kwon, D.O. prescribe under Medicare Part D?
In 2024, Grace Eun Kwon, D.O. had 631 Medicare Part D claims for 21 beneficiaries; 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.