Jim S. Chomchai, MD
Psychiatry Physician · Baldwin Park, CA
Jim S. Chomchai, MD is a psychiatry physician with a practice address in Baldwin Park, California, and NPI 1770650616, issued on Nov 29, 2006. Check the license (California A81600, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Jim S. Chomchai
- Credential
- MD
- Primary taxonomy
- Psychiatry Physician 2084P0800X
- License number
- A81600 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1011 Baldwin Park Blvd, Baldwin Park, CA 91706
- Phone
- (626) 851-1011
- Enumerated
- Nov 29, 2006
- Record last updated
- Nov 29, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20040914001390); accepts Medicare assignment
- Medical or professional school
- Wayne State University School Of Medicine, 1997
- Entity
- Type 1 · individual
8 nearest psychiatry physician records → All 8,673 in California → Look up another NPI →
Also registered at 1011 Baldwin Park Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Olufemi Adenuga, M.D, MPHPulmonary Disease Physician1134389125
- Soma Agarwal, MDOphthalmology Physician1437220316
Verify Jim S. Chomchai in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A81600Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
20% more Medicare Part D claims than the average psychiatry physician in 2024
1,200 Medicare Part D claims for 157 beneficiaries, against an average of 1,000 among the 35,054 providers of this specialty who prescribed in Part D. Brand-name drugs were 2% of claims.
Most prescribed
- Trazodone Hcl97 claims
- Quetiapine Fumarate86 claims
- Sertraline Hcl86 claims
- Clonazepam77 claims
- Venlafaxine Hcl Er67 claims
- Lorazepam65 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
- Southern California Permanente Medical GroupSan Dimas, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Jim S. Chomchai among 8,673 psychiatry physician records in California
Jim S. Chomchai, MD 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 2006, is newer than 2% of them.
- NPI issued2006 · 2% of these records are older, 67% newer
- In a Medicare fileYes · 67% of these records are
- In the CMS Doctors and Clinicians fileYes · 38% of these records are
- Graduated1997 · median 2005 among the 3,295 with a school on file
- Record last updated2021 · 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).
Psychiatry Physician providers in California
There are 8,673 psychiatry physician records in California.
All 8,673 in California → Every provider in Baldwin Park → Psychiatry Physician nationwide →
The 8 psychiatry physician records with the nearest ZIP codes
- Bernard Buchanan, MDBaldwin Park, CA 917061639227572
- Mihai Chituc, MDBaldwin Park, CA 917061770654758
- Novellyn Heard, MDBaldwin Park, CA 917061437207420
- Rajan Iyer, MDBaldwin Park, CA 917061538654330
- Maria Jong, MDBaldwin Park, CA 917061669520599
- Dolores Limtao, MDBaldwin Park, CA 917061881742781
- Christine Um, MDBaldwin Park, CA 917061386703940
- Jeremy Fitzgerald, DOChino, CA 917081407438120
Common questions
What is Jim S. Chomchai, MD's NPI number?
Jim S. Chomchai, MD's National Provider Identifier (NPI) is 1770650616, issued on Nov 29, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Jim S. Chomchai, MD located?
The NPPES record lists a practice address at 1011 Baldwin Park Blvd, Baldwin Park, CA, 91706. Phone: (626) 851-1011. Providers update this record themselves, so call before visiting.
How can I verify Jim S. Chomchai, MD's license?
NPPES lists California license number A81600, 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 Jim S. Chomchai, MD prescribe under Medicare Part D?
In 2024, Jim S. Chomchai, MD had 1,200 Medicare Part D claims for 157 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.