NPPES file of Aug 9, 2026

Yongching Chang-Allen, M.A. CCC-A

Audiologist-Hearing Aid Fitter · Alhambra, CA

Yongching Chang-Allen, M.A. CCC-A is an audiologist-hearing aid fitter with a practice address in Alhambra, California, and NPI 1285843821, issued on May 21, 2007. Check the license (California AU 1955, as entered in NPPES) 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
1285843821
Name
Yongching Chang-Allen
Credential
M.A. CCC-A
Primary taxonomy
Audiologist-Hearing Aid Fitter 237600000X
License number
AU 1955 CA
Self-reported in NPPES; status is on the state search
Practice location
41 N Garfield Ave, Alhambra, CA 91801
Phone
(626) 284-4633
Enumerated
May 21, 2007
Record last updated
Aug 6, 2015 (not updated in 11 years: call before relying on the address or phone)
Fax
(626) 284-4162
Medicaid ID
AU0019550 CA
Medicare enrollment
Enrolled (PECOS I20120223000381); 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-hearing aid fitter records → All 421 in California → Look up another NPI →

Also registered at 41 N Garfield Ave

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

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  2. Fan Hsu, PTPhysical Therapist1790032563
  3. Li Qing Li, LACAcupuncturist1023266228
  4. Ching LyPhysical Therapist1962675199
  5. Gustavo Nino, D.C.Chiropractor1568685915
  6. Weilian Tang, L.ACAcupuncturist1154349959

Verify Yongching Chang-Allen 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 AU 1955    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

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Yongching Chang-Allen among 421 audiologist-hearing aid fitter records in California

Yongching Chang-Allen, M.A. CCC-A is one of 421 audiologist-hearing aid fitter records with a practice address in California. 18% 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 2007, is newer than 26% of them.

  • NPI issued2007 · 26% of these records are older, 55% newer
  • In a Medicare fileNo · 18% of these records are
  • In the CMS Doctors and Clinicians fileYes · 25% of these records are
  • Graduated1998 · median 2009 among the 107 with a school on file
  • Record last updated2015 · 54% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 237600000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Audiologist-Hearing Aid Fitter providers in California

There are 421 audiologist-hearing aid fitter records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

All 421 in California → Every provider in Alhambra → Audiologist-Hearing Aid Fitter nationwide →

The 8 audiologist-hearing aid fitter records with the nearest ZIP codes

  1. Linda Tanaka, M.A.West Covina, CA 917901174647077
  2. Rebecca Coming, M.A.Upland, CA 917861326255902
  3. Guoping CaiSan Gabriel, CA 917761790722791
  4. Christopher Stone, AU.D.Montclair, CA 917631710257985
  5. Ping LiRowland Heights, CA 917481891430062
  6. Debra Mayhew, HADGlendora, CA 917401174918510
  7. Carolyn YuilleGlendora, CA 917401063601201
  8. Ashley Martinez, AU.D.Rancho Cucamonga, CA 917301801491261

Common questions

What is Yongching Chang-Allen, M.A. CCC-A's NPI number?

Yongching Chang-Allen, M.A. CCC-A's National Provider Identifier (NPI) is 1285843821, issued on May 21, 2007. An NPI identifies a provider in billing; it is not a license.

Where is Yongching Chang-Allen, M.A. CCC-A located?

The NPPES record lists a practice address at 41 N Garfield Ave, Alhambra, CA, 91801. Phone: (626) 284-4633. Providers update this record themselves, so call before visiting.

How can I verify Yongching Chang-Allen, M.A. CCC-A's license?

NPPES lists California license number AU 1955, 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. 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.