Darin Chia Fay Quach, DO
Child & Adolescent Psychiatry Physician · Saint Louis, MO
Darin Chia Fay Quach, DO is a child & adolescent psychiatry physician with a practice address in Saint Louis, Missouri, and NPI 1679068761, issued on Jun 29, 2018. Check the license (Missouri 2020010509, as entered in NPPES) on the Missouri Board of Registration for the Healing Arts; the Medicare figures below come from public CMS files.
- Name
- Darin Chia Fay Quach
- Credential
- DO
- Primary taxonomy
- Child & Adolescent Psychiatry Physician 2084P0804X
- License number
- 2020010509 MO
Self-reported in NPPES; status is on the state search - Practice location
- 4444 Forest Park Ave, Saint Louis, MO 63108
- Phone
- (314) 286-1700
- Enumerated
- Jun 29, 2018
- Record last updated
- Apr 17, 2025
- Fax
- (314) 286-1777
- Medicaid ID
- 200062486 MO
- Medicare enrollment
- Enrolled (PECOS I20230612001380); accepts Medicare assignment
- Medical or professional school
- Michigan State University College Of Osteopathic Medicine, 2018
- Entity
- Type 1 · individual
8 nearest child & adolescent psychiatry physician records → All 155 in Missouri → Look up another NPI →
Also registered at 4444 Forest Park Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Brooke Anderson, PMHNPChild & Adolescent Psychiatry Physician1033974019
- Marisa Andrews, CGCGenetic Counselor (M.S.)1891231544
- Christina Anozie, MSW, LMSWSocial Worker1902230741
- Camille Antonacci, OTOccupational Therapist1619483153
- Yewande Apatira, DPTPhysical Therapist1932550688
- Katherine Aravamudan, LPCCounselor1720412893
Verify Darin Chia Fay Quach in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMissouri Board of Registration for the Healing Arts
Search for license 2020010509Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
39% fewer Medicare Part D claims than the average child & adolescent psychiatry physician in 2024
305 Medicare Part D claims for 27 beneficiaries, against an average of 504 among the 3,545 providers of this specialty who prescribed in Part D. Brand-name drugs were 10% of claims.
Most prescribed
- Aripiprazole34 claims
- Trazodone Hcl29 claims
- Duloxetine Hcl23 claims
- Quetiapine Fumarate Er20 claims
- Mirtazapine18 claims
- Invega Sustenna17 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 one group practice
- Bjc Behavioral HealthFarmington, MO
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Darin Chia Fay Quach among 155 child & adolescent psychiatry physician records in Missouri
Darin Chia Fay Quach, DO is one of 155 child & adolescent psychiatry physician records with a practice address in Missouri. 72% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2018, is newer than 81% of them.
- NPI issued2018 · 81% of these records are older, 15% newer
- In a Medicare fileYes · 72% of these records are
- In the CMS Doctors and Clinicians fileYes · 42% of these records are
- Graduated2018 · median 2004 among the 65 with a school on file
- Record last updated2025 · 40% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084P0804X and a Missouri practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Child & Adolescent Psychiatry Physician providers in Missouri
There are 155 child & adolescent psychiatry physician records in Missouri.
All 155 in Missouri → Every provider in Saint Louis → Child & Adolescent Psychiatry Physician nationwide →
The 8 child & adolescent psychiatry physician records with the nearest ZIP codes
- Victoria Ayden, MDSaint Louis, MO 631081134302086
- Kelly Botteron, MDSaint Louis, MO 631081013952860
- John Constantino, MDSaint Louis, MO 631081700804408
- Paul Glaser, MDSaint Louis, MO 631081316020738
- Anne Glowinski, MDSaint Louis, MO 631081750326484
- Dehra Harris, MDSaint Louis, MO 631081922024512
- Jaime Hook, MDSaint Louis, MO 631081811198229
- Joan Luby, MDSaint Louis, MO 631081477579696
Common questions
What is Darin Chia Fay Quach, DO's NPI number?
Darin Chia Fay Quach, DO's National Provider Identifier (NPI) is 1679068761, issued on Jun 29, 2018. An NPI identifies a provider in billing; it is not a license.
Where is Darin Chia Fay Quach, DO located?
The NPPES record lists a practice address at 4444 Forest Park Ave, Saint Louis, MO, 63108. Phone: (314) 286-1700. Providers update this record themselves, so call before visiting.
How can I verify Darin Chia Fay Quach, DO's license?
NPPES lists Missouri license number 2020010509, as entered by the provider. Search the Missouri Board of Registration for the Healing Arts at https://www.fsmb.org/contact-a-state-medical-board/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Darin Chia Fay Quach, DO prescribe under Medicare Part D?
In 2024, Darin Chia Fay Quach, DO had 305 Medicare Part D claims for 27 beneficiaries; the average among child & adolescent psychiatry physician prescribers was 504. 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.