Ruby P. Bayan, MD
Child & Adolescent Psychiatry Physician · Bakersfield, CA
Ruby P. Bayan, MD is a child & adolescent psychiatry physician with a practice address in Bakersfield, California, and NPI 1023166980, issued on Jan 8, 2007. Check the license (California A36859, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Ruby P. Bayan
- Credential
- MD
- Primary taxonomy
- Child & Adolescent Psychiatry Physician 2084P0804X
- License number
- A36859 CA
Self-reported in NPPES; status is on the state search - Practice location
- 3733 San Dimas St, Bakersfield, CA 93301
- Phone
- (800) 353-5400
- Enumerated
- Jan 8, 2007
- Record last updated
- Nov 29, 2007 (not updated in 19 years: call before relying on the address or phone)
- Medicaid ID
- 00A368590 CA
- Entity
- Type 1 · individual
8 nearest child & adolescent psychiatry physician records → All 1,009 in California → Look up another NPI →
Also registered at 3733 San Dimas St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Ruby P. Bayan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A36859Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
90% fewer Medicare Part D claims than the average child & adolescent psychiatry physician in 2024
51 Medicare Part D claims, against an average of 504 among the 3,545 providers of this specialty who prescribed in Part D.
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.
Ruby P. Bayan among 1,009 child & adolescent psychiatry physician records in California
Ruby P. Bayan, MD is one of 1,009 child & adolescent psychiatry physician records with a practice address in California. 55% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 35% of them.
- NPI issued2007 · 35% of these records are older, 41% newer
- In a Medicare fileYes · 55% of these records are
- In the CMS Doctors and Clinicians fileNo · 21% of these records are
- Record last updated2007 · 57% 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 California 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 California
There are 1,009 child & adolescent psychiatry physician records in California.
All 1,009 in California → Every provider in Bakersfield → Child & Adolescent Psychiatry Physician nationwide →
The 8 child & adolescent psychiatry physician records with the nearest ZIP codes
- Michael Ntim, MDBakersfield, CA 933011568029098
- Garth Olango, M.D., PH.D.Bakersfield, CA 933061033359914
- Ahsan Sohel, DOBakersfield, CA 933071891181970
- Marsha Guerra, MDBakersfield, CA 933091316365828
- Frederic Rowe, M.D.Bakersfield, CA 933091871634014
- Ashish Tambar, M.D.Bakersfield, CA 933091932498136
- Teresita Amay, M.D.Visalia, CA 932911265627947
- Christy Anderson, MDVisalia, CA 932911750027116
Common questions
What is Ruby P. Bayan, MD's NPI number?
Ruby P. Bayan, MD's National Provider Identifier (NPI) is 1023166980, issued on Jan 8, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Ruby P. Bayan, MD located?
The NPPES record lists a practice address at 3733 San Dimas St, Bakersfield, CA, 93301. Phone: (800) 353-5400. Providers update this record themselves, so call before visiting.
How can I verify Ruby P. Bayan, MD's license?
NPPES lists California license number A36859, 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 Ruby P. Bayan, MD prescribe under Medicare Part D?
In 2024, Ruby P. Bayan, MD had 51 Medicare Part D claims; 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.