Michael Ryan Trythall, AU.D.

Primary specialty

Audiologist-Hearing Aid FitterTaxonomy code 237600000X

License

AU2225 Issued in CA

Practice address

50 Alessandro PL Ste 360
Pasadena, CA 91105-3105

Phone

(626) 314-3733

Fax

(626) 314-3735

NPI assigned

Nov 9, 2007

Sex

Male

Sole proprietor

No

Registry information is reported by the provider to CMS and is not verified. About this source

Specialties & licenses 1

Addresses

Other identifiers 2

Medicare fee-for-service enrollment

Enrolled in CA

Enrollment records 1

Specialty

Qualified Audiologist

Education

Other, 2002

Medicare assignment

May accept Medicare assignment

Practice addresses (Care Compare)

Merit-based Incentive Payment System (MIPS)

Final score

100 of 100Reported as group

Quality

100

Improvement activities

40

Medicare enrollment (NPD)

Not enrolled

HHS exclusion list flag

Flagged The directory lists this NPI on an HHS exclusion list. The OIG exclusions file (LEIE) holds no record for this NPI, and the directory does not say which list the flag comes from. How exclusions are shown Confirm with the OIG exclusions search.

State licenses

Practice roles

Locations

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships and National Provider Directory roles.

• Pasadena Ear and Hearing, Inc.

  • Audiologist-Hearing Aid Fitter
  • Pasadena, CA
  • NPI 1336861731
  Medicare reassignment NPD Authorized official

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1194566400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1755561600000",
    "number": "1811177553",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "50 ALESSANDRO PL STE 360",
            "city": "PASADENA",
            "state": "CA",
            "postal_code": "911053105",
            "telephone_number": "626-314-3733",
            "fax_number": "626-314-3735"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "50 ALESSANDRO PL STE 360",
            "city": "PASADENA",
            "state": "CA",
            "postal_code": "911053105",
            "telephone_number": "626-314-3733",
            "fax_number": "626-314-3735"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "TRYTHALL",
        "first_name": "MICHAEL",
        "middle_name": "RYAN",
        "credential": "AU.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2007-11-09",
        "last_updated": "2025-08-19",
        "certification_date": "2025-08-19",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "237600000X",
            "taxonomy_group": "",
            "desc": "Audiologist-Hearing Aid Fitter",
            "state": "CA",
            "license": "AU2225",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "9165139",
            "state": "CA"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "CALIFORNIA SPEECH-LANGUAGE PATHOLOGY, AUDIOLOGY AND HEARING AID DISPENSERS BOARD",
            "identifier": "AU2225",
            "state": "CA"
        }
    ],
    "endpoints": [],
    "other_names": []
}

• John An Truong
• Kacey Van-Ai Truong
• My-Linh Truong, D.O.
• Priscilla C Truong, O. D.
• Shawny Truong
• James W Tsai, D.D.S.
• John Y. F. Tsai, MD
• Joseph Cheng-Yo Tsai
• Steve Fu-Min Tsai, M.D.
• Vivian Tsai

• Audiologist-Hearing Aid Fitter in Pasadena, CA
• Providers in Pasadena, CA by specialty
• Audiologist-Hearing Aid Fitter in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Aug 19, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments.
• Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.