Provider Profile
Listed in the NPI registry as an audiologist, Ashley M. Chwastyk, AU.D. practices in Los Altos, CA. Medicare claims data shows Ashley provided 144 services to 144 patients. The services billed most often include comprehensive hearing and speech recognition test, placement of ear probe for computerized measurement of repeated sounds with interpretation and report, and test to assess middle ear function.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it — free, and no identity document with a practice or institutional email.
License numbers are what the provider reported to NPPES when the NPI was issued or updated. NPPES does not verify licensure; confirm current standing with the state licensing board.
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
496 1ST ST STE 120
Los Altos, CA 94022
Within Audiology generally. Availability varies by clinician, training and location — this profile has not been claimed, so nothing here is a personal claim by the provider.
Most searched conditions
Balance & Inner Ear
Brain & Hearing
Dizziness & Balance
Ear & Hearing
Ear Conditions
Ear Pressure
Ear Symptoms
Hearing
Infections
Pediatric Hearing
Sound Sensitivity
Most searched procedures
Balance Testing
Balance Treatment
Device Maintenance
Device Support
Diagnostic Exams
Diagnostics
Hearing Aids
Hearing Evaluations
Hearing Protection
Hearing Rehabilitation
Implants
Pediatric Testing
Tinnitus Management
Tinnitus Treatment
Workplace Health
144 services · 144 patients · 4 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Comprehensive hearing and speech recognition test | Treatment | 92557 |
53 | Less often than most peers in Audiologist |
| Placement of ear probe for computerized measurement of repeated sounds with interpretation and report | Treatment | 92588 |
37 | As often as other peers in Audiologist |
| Test to assess middle ear function | Treatment | 92567 |
27 | Less often than most peers in Audiologist |
| Test for eardrum and muscle function | Treatment | 92550 |
27 | Less often than most peers in Audiologist |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Ashley M. Chwastyk is an audiologist in Los Altos, CA. That is the designation recorded for this NPI in the federal registry.
NPI registry
Ashley M. Chwastyk is listed at 496 1St St Ste 120, Los Altos, CA 94022. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
The number on file is (650) 941-0664. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
Ashley M. Chwastyk's National Provider Identifier is 1013441583. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Ashley M. Chwastyk attended Other, graduating in 2017. This comes from the CMS National Downloadable File.
CMS public data
Ashley M. Chwastyk has 9 years experience. Calculated from a graduation year of 2017, reported in the CMS National Downloadable File.
CMS public data
According to Medicare billing data, Ashley M. Chwastyk provides treatments such as comprehensive hearing and speech recognition test and placement of ear probe for computerized measurement of repeated sounds with interpretation and report. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Not yet. This profile is built from public federal data and has not been confirmed by Ashley M. Chwastyk. If this is you, claiming it is free.
Guide.md
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.