NPPES file of Aug 9, 2026

Ian Benjamin Mertes, AU.D., PH.D.

Audiologist · Loma Linda, CA

Ian Benjamin Mertes, AU.D., PH.D. is an audiologist with a practice address in Loma Linda, California, and NPI 1184023327, issued on Aug 13, 2014. Check the license with the California board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.

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

NPPES recordNPPES file of Aug 9, 2026
1184023327
Name
Ian Benjamin Mertes
Credential
AU.D., PH.D.
Primary taxonomy
Audiologist 231H00000X
License number
000753 IA
Self-reported in NPPES; status is on the state search
Practice location
VA Loma Linda Healthcare System, Loma Linda, CA 92357
Phone
(909) 825-7084
Enumerated
Aug 13, 2014
Record last updated
Aug 13, 2014 (not updated in 12 years: call before relying on the address or phone)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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Also registered at VA Loma Linda Healthcare System

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

  1. Dwight Evans, M.D.Internal Medicine Physician1760420509
  2. Andrew Guo, MD, MPH, MBAOccupational Medicine Physician1154480812
  3. Suzanne Hilleary, PH.D.Clinical Psychologist1710249313
  4. Navin Jaipaul, MD, MHSNephrology Physician1588675359
  5. Raymond McDonaldPastoral Counselor1619623097
  6. Christine Miller, PHARM.D.Ambulatory Care Pharmacist1144236092

Verify Ian Benjamin Mertes in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich California board licenses this professionCheck 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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Ian Benjamin Mertes among 1,561 audiologist records in California

Ian Benjamin Mertes, AU.D., PH.D. 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 not. Its NPI, issued in 2014, is newer than 54% of them.

  • NPI issued2014 · 54% of these records are older, 43% newer
  • In a Medicare fileNo · 23% of these records are
  • In the CMS Doctors and Clinicians fileNo · 28% of these records are
  • Record last updated2014 · 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. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

The 8 audiologist records with the nearest ZIP codes

  1. Ian BoyleLoma Linda, CA 923571154846897
  2. Crystal Bushey-Mata, AUDLoma Linda, CA 923571285678706
  3. Debra Gilstrap, AUDLoma Linda, CA 923571497781538
  4. O'Neil Guthrie, PH.D.Loma Linda, CA 923571396074795
  5. Carol Hippert, MALoma Linda, CA 923571386689859
  6. Jill Huseman, AUDLoma Linda, CA 923571932215076
  7. Brittney Keyworth, AU.D.Loma Linda, CA 923571083643423
  8. Michael Lindeman, AU.D.Loma Linda, CA 923571326259763

Common questions

What is Ian Benjamin Mertes, AU.D., PH.D.'s NPI number?

Ian Benjamin Mertes, AU.D., PH.D.'s National Provider Identifier (NPI) is 1184023327, issued on Aug 13, 2014. An NPI identifies a provider in billing; it is not a license.

Where is Ian Benjamin Mertes, AU.D., PH.D. located?

The NPPES record lists a practice address at VA Loma Linda Healthcare System, Loma Linda, CA, 92357. Phone: (909) 825-7084. Providers update this record themselves, so call before visiting.

How can I verify Ian Benjamin Mertes, AU.D., PH.D.'s license?

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. 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.