Ellen Blair Baker, AUD
Audiologist · Simi Valley, CA
Ellen Blair Baker, AUD is an audiologist with a practice address in Simi Valley, California, and NPI 1336287655, issued on Feb 1, 2007. Check the license (California AU1107, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Ellen Blair Baker
- Credential
- AUD
- Primary taxonomy
- Audiologist 231H00000X
- License number
- AU1107 CA
Self-reported in NPPES; status is on the state search - Practice location
- 2655 1St St, Simi Valley, CA 93065
- Phone
- (805) 584-3327
- Enumerated
- Feb 1, 2007
- Record last updated
- May 4, 2016 (not updated in 10 years: call before relying on the address or phone)
- Fax
- (805) 584-3329
- Medicare enrollment
- Enrolled (PECOS I20040727000471); accepts Medicare assignment
- Medical or professional school
- New York University School Of Medicine, 1978
- Entity
- Type 1 · individual
8 nearest audiologist records → All 1,561 in California → Look up another NPI →
Also registered at 2655 1St St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Donald Downs, MD.Family Medicine Physician1568451979
- Maria Garcia-Jimenez, MDInternal Medicine Physician1902284433
- Maeve Lin, D.O.Family Medicine Physician1235576612
- Jutharat Pattanachinda, M.D.Pediatrics Physician1720077423
- Luis ReyesElectroneurodiagnostic Specialist/Technologist1073991527
Verify Ellen Blair Baker in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license AU1107Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through one group practice
- Decibel Hearing ServicesSimi Valley, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ellen Blair Baker among 1,561 audiologist records in California
Ellen Blair Baker, AUD is one of 1,561 audiologist records with a practice address in California. 23% 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 22% of them.
- NPI issued2007 · 22% of these records are older, 64% newer
- In a Medicare fileYes · 23% of these records are
- In the CMS Doctors and Clinicians fileYes · 28% of these records are
- Graduated1978 · median 2014 among the 433 with a school on file
- Record last updated2016 · 56% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 231H00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Audiologist providers in California
There are 1,561 audiologist records in California.
All 1,561 in California → Every provider in Simi Valley → Audiologist nationwide →
The 8 audiologist records with the nearest ZIP codes
- Kelley Bannon, AUDSimi Valley, CA 930651023222759
- Caitlin Davis, AUDSimi Valley, CA 930651396573937
- Hang Lam, AU.D.Simi Valley, CA 930651407253784
- John Malan, AUDSimi Valley, CA 930651194862219
- Patricia Roberts, AU.D.Port Hueneme, CA 930431891745600
- Martha Meister, M.S., CCC-AOxnard, CA 930361164600805
- Daven Gonzales, AU.D.Oxnard, CA 930301821969072
- Roselynn Plevack, AUDOxnard, CA 930301649894478
Common questions
What is Ellen Blair Baker, AUD's NPI number?
Ellen Blair Baker, AUD's National Provider Identifier (NPI) is 1336287655, issued on Feb 1, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Ellen Blair Baker, AUD located?
The NPPES record lists a practice address at 2655 1St St, Simi Valley, CA, 93065. Phone: (805) 584-3327. Providers update this record themselves, so call before visiting.
How can I verify Ellen Blair Baker, AUD's license?
NPPES lists California license number AU1107, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity 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.