Brian Andrew Kobayashi, MD
Psychiatry Physician · Norwalk, CA
Brian Andrew Kobayashi, MD is a psychiatry physician with a practice address in Norwalk, California, and NPI 1083293328, issued on Apr 5, 2021. Check the license (California A202025, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Brian Andrew Kobayashi
- Credential
- MD
- Primary taxonomy
- Psychiatry Physician 2084P0800X
- License number
- A202025 CA
Self-reported in NPPES; status is on the state search - Practice location
- 11401 Bloomfield Ave, Norwalk, CA 90650
- Phone
- (999) 999-9999
- Enumerated
- Apr 5, 2021
- Record last updated
- Jan 12, 2026
- Medicare enrollment
- Enrolled (PECOS I20251030004943); may accept Medicare assignment
- Medical or professional school
- Un Of California, Irvine, College Of Medicine, 2021
- Entity
- Type 1 · individual
8 nearest psychiatry physician records → All 8,673 in California → Look up another NPI →
Also registered at 11401 Bloomfield Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Camille Ace, PSY.D.Psychologist1740317650
- Arshad Ali, M.D.Psychiatry Physician1982834883
- Amaogechukwu Alugbue, NPFamily Nurse Practitioner1356123160
- Jaydina Amaker, PSY.D.Psychologist1952967341
- Ranjan Amin, M.D.Psychiatry Physician1659301489
Verify Brian Andrew Kobayashi in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A202025Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
74% fewer Medicare Part D claims than the average psychiatry physician in 2024
263 Medicare Part D claims for 17 beneficiaries, against an average of 1,000 among the 35,054 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.
Most prescribed
- Quetiapine Fumarate30 claims
- Clozapine24 claims
- Duloxetine Hcl24 claims
- Clonazepam23 claims
- Divalproex Sodium19 claims
- Fluoxetine Hcl19 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.
Brian Andrew Kobayashi among 8,673 psychiatry physician records in California
Brian Andrew Kobayashi, 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 2021, is newer than 91% of them.
- NPI issued2021 · 91% of these records are older, 7% newer
- In a Medicare fileYes · 67% of these records are
- In the CMS Doctors and Clinicians fileYes · 38% of these records are
- Graduated2021 · median 2005 among the 3,295 with a school on file
- Record last updated2026 · 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).
57 psychiatry physician records list a practice address in Norwalk
They are 57 of the 1,600 NPPES records with a practice address in Norwalk, and 8,673 psychiatry physician records in California.
All 8,673 in California → Every provider in Norwalk → Psychiatry Physician nationwide →
The 8 psychiatry physician records with the nearest ZIP codes
- Harun Aslam, MDNorwalk, CA 906501417903006
- Rebecca Avena-Gonzales, MDNorwalk, CA 906501487600045
- Samia Boshra, MDNorwalk, CA 906501285680744
- Isaac Browne, MDNorwalk, CA 906501346296704
- Laura Dardashti, MDNorwalk, CA 906501558317685
- Thein Han, M.D.Norwalk, CA 906501760457808
- Ehab Hanna, M.D.Norwalk, CA 906501972500403
- Ashraf Helmy, M.D.Norwalk, CA 906501790753234
Common questions
What is Brian Andrew Kobayashi, MD's NPI number?
Brian Andrew Kobayashi, MD's National Provider Identifier (NPI) is 1083293328, issued on Apr 5, 2021. An NPI identifies a provider in billing; it is not a license.
Where is Brian Andrew Kobayashi, MD located?
The NPPES record lists a practice address at 11401 Bloomfield Ave, Norwalk, CA, 90650. Phone: (999) 999-9999. Providers update this record themselves, so call before visiting.
How can I verify Brian Andrew Kobayashi, MD's license?
NPPES lists California license number A202025, 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 Brian Andrew Kobayashi, MD prescribe under Medicare Part D?
In 2024, Brian Andrew Kobayashi, MD had 263 Medicare Part D claims for 17 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.