Thomas Wei Guo Bai, MD
Psychiatry Physician · Colton, CA
Thomas Wei Guo Bai, MD is a psychiatry physician with a practice address in Colton, California, and NPI 1538204359, issued on Feb 20, 2007. Check the license (California A97670, as entered in NPPES) on the Medical Board of California; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Thomas Wei Guo Bai
- Credential
- MD
- Primary taxonomy
- Psychiatry Physician 2084P0800X
- License number
- A97670 CA
Self-reported in NPPES; status is on the state search - Practice location
- 400 N Pepper Ave # BH, Colton, CA 92324
- Phone
- (909) 580-3830
- Enumerated
- Feb 20, 2007
- Record last updated
- Mar 9, 2012 (not updated in 14 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest psychiatry physician records → All 8,673 in California → Look up another NPI →
Verify Thomas Wei Guo Bai in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A97670Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Thomas Wei Guo Bai among 8,673 psychiatry physician records in California
Thomas Wei Guo Bai, 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 not. Its NPI, issued in 2007, is newer than 33% of them.
- NPI issued2007 · 33% of these records are older, 48% newer
- In a Medicare fileNo · 67% of these records are
- In the CMS Doctors and Clinicians fileNo · 38% of these records are
- Record last updated2012 · 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).
35 psychiatry physician records list a practice address in Colton
They are 35 of the 2,459 NPPES records with a practice address in Colton, and 8,673 psychiatry physician records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 8,673 in California → Every provider in Colton → Psychiatry Physician nationwide →
The 8 psychiatry physician records with the nearest ZIP codes
- Jose Aguilar, M.D.Colton, CA 923241619255783
- Kedarnath Challakere, MDColton, CA 923241972610335
- Claudin Gomez, M.D.Colton, CA 923241841512399
- Keith Gordon, M.D.Colton, CA 923241053473629
- Johannes Ndlela, M.D.Colton, CA 923241699837898
- Doan Nguyen, MDColton, CA 923241457493405
- Mailan Pham, M.D.Colton, CA 923241255531687
- Stoyan Rusev, M.D.,PH.D.Colton, CA 923241902978760
Common questions
What is Thomas Wei Guo Bai, MD's NPI number?
Thomas Wei Guo Bai, MD's National Provider Identifier (NPI) is 1538204359, issued on Feb 20, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Thomas Wei Guo Bai, MD located?
The NPPES record lists a practice address at 400 N Pepper Ave # BH, Colton, CA, 92324. Phone: (909) 580-3830. Providers update this record themselves, so call before visiting.
How can I verify Thomas Wei Guo Bai, MD's license?
NPPES lists California license number A97670, 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.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. 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.