NPPES file of Aug 9, 2026

Ruth H. Kaspar, AUD

Audiologist · Santa Cruz, CA

Ruth H. Kaspar, AUD is an audiologist with a practice address in Santa Cruz, California, and NPI 1871631853, issued on Feb 2, 2007. Check the license (California AU2125, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1871631853
Name
Ruth H. Kaspar
Credential
AUD
Primary taxonomy
Audiologist 231H00000X
License number
AU2125 CA
Self-reported in NPPES; status is on the state search
Practice location
550 Water St Ste A, Santa Cruz, CA 95060
Phone
(831) 476-4414
Enumerated
Feb 2, 2007
Record last updated
Feb 11, 2025
Fax
(831) 476-0264
Medicare enrollment
Enrolled (PECOS I20081107000626); accepts Medicare assignment
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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8 nearest audiologist records → All 1,561 in California → Look up another NPI →

Also registered at 550 Water St Ste A

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Rachel Ersoff, AUDAudiologist1104272657
  2. Charie Evans, PA-CPhysician Assistant1265775340
  3. Hannah Farquharson, M.D.Family Medicine Physician1659437838
  4. Michael Hajek, MDOtolaryngology Physician1114456639
  5. Naomi Legate, NPNurse Practitioner1679827174
  6. Ken Norton, AU.D.Audiologist1104985613

Verify Ruth H. Kaspar in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich California board licenses this profession
    Search for license AU2125    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Find the California license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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Bills Medicare through one group practice

  1. Bass Medical GroupFreedom, CA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Ruth H. Kaspar among 1,561 audiologist records in California

Ruth H. Kaspar, 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
  • Graduated2006 · median 2014 among the 433 with a school on file
  • Record last updated2025 · 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 Santa Cruz → Audiologist nationwide →

The 8 audiologist records with the nearest ZIP codes

  1. Rachel Ersoff, AUDSanta Cruz, CA 950601104272657
  2. Ken Norton, AU.D.Santa Cruz, CA 950601104985613
  3. Anna Dodge, AUDSanta Cruz, CA 950651710266424
  4. Donelle Ehritt, M.AScotts Valley, CA 950661700823630
  5. Carol Free, M.S.Scotts Valley, CA 950661992865430
  6. Brenna Andrews, AUDSanta Clara, CA 950511568070100
  7. Heather Burr, AU.D.Santa Clara, CA 950511740569334
  8. Bisma Choudhry, AUDSanta Clara, CA 950511982527370

Common questions

What is Ruth H. Kaspar, AUD's NPI number?

Ruth H. Kaspar, AUD's National Provider Identifier (NPI) is 1871631853, issued on Feb 2, 2007. An NPI identifies a provider in billing; it is not a license.

Where is Ruth H. Kaspar, AUD located?

The NPPES record lists a practice address at 550 Water St Ste A, Santa Cruz, CA, 95060. Phone: (831) 476-4414. Providers update this record themselves, so call before visiting.

How can I verify Ruth H. Kaspar, AUD's license?

NPPES lists California license number AU2125, 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.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.