1. Home
  2. Directory
  3. California
  4. Pasadena
  5. Audiologist Hearing Aid Fitter
  6. NPI Profile

DOROTHY HANNAH YAMAGUCHI AUD
NPI 1750167078
Audiologist-Hearing Aid Fitter in Pasadena, CA

Active since September 01, 2023
10 CONGRESS ST STE 300, PASADENA, CA 91105(626) 639-3182 Get Directions Write a Review

NPPES record last updated: September 1, 2023. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Dorothy Hannah Yamaguchi Aud NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DOROTHY HANNAH YAMAGUCHI AUD (NPI 1750167078) is an individual audiologist-hearing aid fitter provider in Pasadena, California and active in the NPI registry since September 2023. She maintains 2 additional practice locations.

NPPES Registry Identity

NPI1750167078
Entity TypeIndividualFemale
Primary Taxonomy237600000X
Provider Legal NameDOROTHY HANNAH YAMAGUCHICredential: AUD
Location Address10 CONGRESS ST STE 300Pasadena, CA 91105-3027
Mailing AddressPo Box 1370Monrovia, CA 91017-1370 · (626) 353-5114
Phone(626) 639-3182
Sole ProprietorYes
Enumeration DateSeptember 1, 2023
NPPES CertifiedSeptember 1, 2023
✔ NPI 1750167078 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyAudiologist-Hearing Aid FitterSpeech, Language and Hearing Service Providers
Taxonomy Code237600000X
Definition
An audiologist/hearing aid fitter is the professional who specializes in evaluating and treating people with hearing loss, conducts a wide variety of tests to determine the exact nature of an individual's hearing problem, presents a variety of treatment options to patients, dispenses and fits hearing aids, administers tests of balance to evaluate dizziness and provides hearing rehabilitation training. This classification should be used where individuals are licensed as audiologist-hearing aid fitters as opposed to states that license individuals as audiologists.
10 CONGRESS ST STE 300, Pasadena, CA 91105
Open in Google Maps ↗

Secondary Practice Locations 2

Location 1415 W Carroll Ave Ste 201Glendora, CA 91741-4208 · Phone (626) 250-6642
Location 29220 Haven Ave Ste 360Rancho Cucamonga, CA 91730-8551 · Phone (909) 481-2834

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dorothy Hannah Yamaguchi Aud is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Medicare Billing Reassignment

Medicare enrollment records show Dorothy Yamaguchi reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Hearing Science Of Rancho Cucamonga, A Professional Audiology Corporat
30 mi
Audiologist-Hearing Aid Fitter
8263 GROVE AVE, SUITE 203
Rancho Cucamonga, CA 91730
  • Reassigned Medicare billing, California enrollment
  • 4 clinicians in this Medicare group
NPI 1164559456 (909) 920-9906

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Other Providers at the Same Location NPPES 3

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

ARA KESHISHIAN, A PROFESSIONAL MEDICAL CORP
Clinic/Center (Medical Specialty)
10 CONGRESS ST STE 300
PASADENA, CA 91105
Los Angeles County (818) 812-7222
DR. ARA KESHISHIAN MD
Surgery
10 CONGRESS ST STE 300
PASADENA, CA 91105
Los Angeles County (818) 812-7222
LINDSAY BRIANA JENSEN AUD
Audiologist
10 CONGRESS ST STE 300
PASADENA, CA 91105
Los Angeles County (626) 639-3182

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Dorothy Yamaguchi's NPI number?

The NPI number for Dorothy Yamaguchi is 1750167078. It was assigned to this individual provider in the NPPES registry on September 1, 2023.

Where is Dorothy Yamaguchi located?

Dorothy Yamaguchi practices at 10 Congress St Ste 300, Pasadena, CA 91105. The listed phone number is (626) 639-3182.

What is Dorothy Yamaguchi's specialty?

The primary specialty registered for this NPI is Audiologist-Hearing Aid Fitter with taxonomy code 237600000X.

Is Dorothy Yamaguchi enrolled in Medicare?

Yes. Dorothy Yamaguchi is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Dorothy Yamaguchi's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Dorothy Yamaguchi reassigns Medicare benefits to Hearing Science Of Rancho Cucamonga, A Professional Audiology Corporat (Rancho Cucamonga, CA). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Dorothy Yamaguchi's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Dorothy Yamaguchi was last updated on September 1, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.