NPPES file of Aug 9, 2026

Leigh Tyner Grossmann, AU.D.

Audiologist · Modesto, CA

Leigh Tyner Grossmann, AU.D. is an audiologist with a practice address in Modesto, California, and NPI 1770451569, issued on Oct 24, 2025. Check the license (California 4099, 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
1770451569
Name
Leigh Tyner Grossmann
Credential
AU.D.
Primary taxonomy
Audiologist 231H00000X
License number
4099 CA
Self-reported in NPPES; status is on the state search
Practice location
600 Coffee RD, Modesto, CA 95355
Phone
(209) 524-1211
Enumerated
Oct 24, 2025
Record last updated
Feb 4, 2026
Medicare enrollment
Enrolled (PECOS I20260112000736); 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 600 Coffee RD

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

  1. Abulaiti Adili, M.D.Hospitalist Physician1063839439
  2. David Adkins, MDHematology & Oncology Physician1104883644
  3. Lorenzo Aguilar, MDNeurology Physician1740481043
  4. Vaishali Ahire, M.D.Hospitalist Physician1134324262
  5. Mohammad Akmal, MDHospitalist Physician1649413667
  6. Amr Al-Bacil, MDCritical Care Medicine (Internal Medicine) Physician1538134374

Verify Leigh Tyner Grossmann 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 4099    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. Sutter Valley Medical FoundationModesto, CA

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

Leigh Tyner Grossmann among 1,561 audiologist records in California

Leigh Tyner Grossmann, AU.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. Its NPI, issued in 2025, is newer than 92% of them.

  • NPI issued2025 · 92% of these records are older, 4% newer
  • In a Medicare fileYes · 23% of these records are
  • In the CMS Doctors and Clinicians fileYes · 28% of these records are
  • Graduated2025 · median 2014 among the 433 with a school on file
  • Record last updated2026 · 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 Modesto → Audiologist nationwide →

The 8 audiologist records with the nearest ZIP codes

  1. Andrea Edgerton, AU.D.Modesto, CA 953551710293709
  2. Carissa Lamore, AU.D.Modesto, CA 953551497068720
  3. Marilyn Dixon-Brown, M.S.Modesto, CA 953561679641096
  4. Stephanie LopezModesto, CA 953561134006778
  5. Karley Western, AU.D.Modesto, CA 953561821927443
  6. Theresa Wilksen, M.A.Modesto, CA 953561447374608
  7. Kathryn Stewart, MAMerced, CA 953481063766608
  8. Kel Kratzer, AUDIOLOGISTMerced, CA 953401538262068

Common questions

What is Leigh Tyner Grossmann, AU.D.'s NPI number?

Leigh Tyner Grossmann, AU.D.'s National Provider Identifier (NPI) is 1770451569, issued on Oct 24, 2025. An NPI identifies a provider in billing; it is not a license.

Where is Leigh Tyner Grossmann, AU.D. located?

The NPPES record lists a practice address at 600 Coffee RD, Modesto, CA, 95355. Phone: (209) 524-1211. Providers update this record themselves, so call before visiting.

How can I verify Leigh Tyner Grossmann, AU.D.'s license?

NPPES lists California license number 4099, 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.