Roland Egon Bastian, M.D.
Emergency Medicine Physician · Thousand Oaks, CA
Roland Egon Bastian, M.D. is an emergency medicine physician with a practice address in Thousand Oaks, California, and NPI 1982634242, issued on Jul 3, 2006. Check the license (California G83563, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Roland Egon Bastian
- Credential
- M.D.
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- G83563 CA
Self-reported in NPPES; status is on the state search - Practice location
- 215 W Janss RD, Thousand Oaks, CA 91360
- Phone
- (805) 370-4435
- Enumerated
- Jul 3, 2006
- Record last updated
- Jul 7, 2008 (not updated in 18 years: call before relying on the address or phone)
- Fax
- (805) 379-5579
- Medicaid ID
- 00G835630 CA
- Medicare enrollment
- Enrolled (PECOS I20050119000563); accepts Medicare assignment
- Medical or professional school
- Loma Linda University School Of Medicine, 1993
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 7,751 in California → Look up another NPI →
Also registered at 215 W Janss RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Sandra Abadir, MDStudent in an Organized Health Care Education/Training Program1609578152
- Danny Abdalnour, MDStudent in an Organized Health Care Education/Training Program1598613705
- Sara Abdel AzimStudent in an Organized Health Care Education/Training Program1760284384
- Ziad Abdullatif, D.O.Student in an Organized Health Care Education/Training Program1710689419
- Bianca Abramian, MDStudent in an Organized Health Care Education/Training Program1649118332
- Rehman Afraz, MDStudent in an Organized Health Care Education/Training Program1265370407
Verify Roland Egon Bastian in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G83563Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
83% fewer Medicare Part D claims than the average emergency medicine physician in 2024
38 Medicare Part D claims for 25 beneficiaries, against an average of 226 among the 54,106 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.
Bills Medicare through one group practice
- Team Physicians OF California Medical Group IncThousand Oaks, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Roland Egon Bastian among 7,751 emergency medicine physician records in California
Roland Egon Bastian, M.D. is one of 7,751 emergency medicine physician records with a practice address in California. 81% 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 4% of them.
- NPI issued2006 · 4% of these records are older, 60% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 59% of these records are
- Graduated1993 · median 2011 among the 4,560 with a school on file
- Record last updated2008 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207P00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Emergency Medicine Physician providers in California
There are 7,751 emergency medicine physician records in California.
All 7,751 in California → Every provider in Thousand Oaks → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Heaveen Ahdi, MDThousand Oaks, CA 913601598339582
- Daoud Ajeen, MDThousand Oaks, CA 913601689366742
- Evelyn Cardenas, M.D.Thousand Oaks, CA 913601154356855
- Paul David, M.D.Thousand Oaks, CA 913601295844264
- John Kudirka, M.D.Thousand Oaks, CA 913601821025537
- Barry Pollack, M.D.Thousand Oaks, CA 913601962443184
- Ophelia Sanders, M.D.Thousand Oaks, CA 913601851320253
- Autumn Solis, FNP-BCThousand Oaks, CA 913601205449832
Common questions
What is Roland Egon Bastian, M.D.'s NPI number?
Roland Egon Bastian, M.D.'s National Provider Identifier (NPI) is 1982634242, issued on Jul 3, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Roland Egon Bastian, M.D. located?
The NPPES record lists a practice address at 215 W Janss RD, Thousand Oaks, CA, 91360. Phone: (805) 370-4435. Providers update this record themselves, so call before visiting.
How can I verify Roland Egon Bastian, M.D.'s license?
NPPES lists California license number G83563, 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 Roland Egon Bastian, M.D. prescribe under Medicare Part D?
In 2024, Roland Egon Bastian, M.D. had 38 Medicare Part D claims for 25 beneficiaries; the average among emergency medicine physician prescribers was 226. 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.