Sarah Bader, DO
Internal Medicine Physician · Orange, CA
Sarah Bader, DO is an internal medicine physician with a practice address in Orange, California, and NPI 1134680390, issued on Mar 28, 2019. Check the license (California 20A-20248, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Sarah Bader
- Credential
- DO
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- 20A-20248 CA
71189-21 WI
Self-reported in NPPES; status is on the state search - Practice location
- 101 The City Drive, Orange, CA 92868
- Phone
- (714) 456-5691
- Enumerated
- Mar 28, 2019
- Entity
- Type 1 · individual
Also registered at 101 The City Drive
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Arina AlexeevaStudent in an Organized Health Care Education/Training Program1033813993
- Sahar AmoozadehStudent in an Organized Health Care Education/Training Program1588313241
- Divya BalchanderStudent in an Organized Health Care Education/Training Program1124722475
- Cherish De La Cruz, RN, PHNCommunity Health Registered Nurse1679026249
- Sima Fargahi, M.D.Specialist1124239397
- Fariba Hossain, MDStudent in an Organized Health Care Education/Training Program1154260321
Verify Sarah Bader in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 20A-20248Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
99% fewer Medicare Part D claims than the average internal medicine physician in 2024
30 Medicare Part D claims for 18 beneficiaries, against an average of 2,785 among the 127,794 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.
One hospital or facility affiliation
- Osf Multi-Specialty GroupRockford, IL
Source: CMS Doctors and Clinicians affiliations; Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
275 internal medicine physician records list a Orange practice address
They are 275 of the 13,245 NPPES records with a Orange practice address, and 20,403 internal medicine physician records in California.
All 275 in Orange → All 20,403 in California → Every provider in Orange →
Other internal medicine physician records in California
- Jacob Aaron, MDSan Francisco, CA1407202518
- Alistair Aaronson, MDStanford, CA1457628760
- Jose Abad., MDSacramento, CA1144607219
- Donna Abare, MDOakland, CA1386722155
- Marce AbareScotts Valley, CA1457744708
- Samuel Abarte, M.D.Chula Vista, CA1578535498
- Alexander Abary, MDLong Beach, CA1104995919
- Luba Abascal, MDSan Francisco, CA1023180874
- Michael Abate, MDSacramento, CA1548248131
- Wali Abawi, D.O.Joshua Tree, CA1104362268
Common questions
What is Sarah Bader, DO's NPI number?
Sarah Bader, DO's National Provider Identifier (NPI) is 1134680390, issued on Mar 28, 2019. An NPI identifies a provider in billing; it is not a license.
Where is Sarah Bader, DO located?
The NPPES record lists a practice address at 101 The City Drive, Orange, CA, 92868. Phone: (714) 456-5691. Providers update this record themselves, so call before visiting.
How can I verify Sarah Bader, DO's license?
NPPES lists California license number 20A-20248, 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 Sarah Bader, DO prescribe under Medicare Part D?
In 2024, Sarah Bader, DO had 30 Medicare Part D claims for 18 beneficiaries; the average among internal medicine physician prescribers was 2,785. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 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.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.