DR. MAI LY THI HOLLY NGUYEN AU.D.
NPI 1336585488
Audiologist in Las Vegas, NV

Q: What is Mai Ly Nguyen's NPI number?

The NPI number for Mai Ly Nguyen is 1336585488. It was assigned to this individual provider in the NPPES registry on May 16, 2013. The provider is also known as Holly Nguyen Au.D..

Q: What is Mai Ly Nguyen's specialty?

The primary specialty registered for this NPI is Audiologist with taxonomy code 231H00000X.

Q: When was this NPI record last updated?

The NPPES record for Mai Ly Nguyen was last updated on December 26, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.

Active since May 16, 2013Accepts Medicare Assignment

6767 W TROPICANA AVE STE 212, LAS VEGAS, NV 89103(702) 755-9597(702) 933-8688 Get Directions Write a Review

NPPES record last updated: December 26, 2023. Verified against the NPPES registry weekly; last sync: October 25, 2026.

On this page

About Dr. Mai Ly Thi Holly Nguyen Au.d. NPPES

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

DR. MAI LY THI HOLLY NGUYEN AU.D. (NPI 1336585488) is an individual audiologist in Las Vegas, Nevada, licensed in Nevada (A-245) and active in the NPI registry since May 2013. She maintains a secondary practice location in Las Vegas and is a graduate of Other (2012).

NPPES Registry Identity

NPI1336585488

Entity TypeIndividualFemale

Primary Taxonomy231H00000X

Provider Legal NameDR. MAI LY THI HOLLY NGUYENCredential: AU.D.

Location Address6767 W TROPICANA AVE STE 212Las Vegas, NV 89103-4760

Mailing Address5130 S Fort Apache Rd # 215-430Las Vegas, NV 89148-1719 · (702) 755-9597 · Fax (702) 933-8688

Phone(702) 755-9597

Fax(702) 933-8688

Sole ProprietorYes

Medical School CMSOtherGraduated 2012

Enumeration DateMay 16, 2013

Last NPPES UpdateDecember 26, 2023

NPPES CertifiedDecember 26, 2023

✔ NPI 1336585488 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyAudiologistSpeech, Language and Hearing Service Providers

Taxonomy Code231H00000X

License✔ Licensed in NV · A-245

Definition

(1) A specialist in evaluation, habilitation and rehabilitation of those whose communication disorders center in whole or in part in hearing function. Audiologists are autonomous professionals who identify, assess, and manage disorders of the auditory, balance and other neural systems. Audiologists provide audiological (aural) rehabilitation to children and adults across the entire age span. Audiologists select, fit and dispense amplification systems such as hearing aids and related devices. (2) An audiologist is a person qualified by a master's degree in audiology, licensed by the state, where applicable, and practicing within the scope of that license. Audiologists evaluate and treat patients with impaired hearing. They plan, direct and conduct rehabilitative programs with audiotry substitutional devises (hearing aids) and other therapy.

Also ListedAudiologist-Hearing Aid FitterTaxonomy 237600000X · License A-245 (NV)

6767 W TROPICANA AVE STE 212, Las Vegas, NV 89103

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Other Names 1

Professional Name (2)Holly Nguyen Au.d.

Secondary Practice Location 1

Location 16767 W Tropicana Ave Ste 212Las Vegas, NV 89103-4760 · Phone (702) 755-9597 · Fax (702) 933-8688

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Mai Ly Thi Holly Nguyen Au.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID3476779430

PECOS Enrollment IDI20140728001581

Medicare Billing Reassignment

Medicare enrollment records show Mai Ly Nguyen reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Audiology By Holly Nguyen LLC

0.1 mi

Hearing and Speech

6787 W TROPICANA AVE, SUITE 249
Las Vegas, NV 89103

Reassigned Medicare billing, Nevada enrollment

NPI 1740607472 (702) 755-9597

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

Areas of Expertise CMS Part B claims 2

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Comprehensive hearing and speech recognition test 92557

A comprehensive hearing and speech recognition test assesses your ability to hear and understand spoken words. It includes hearing tests to check for issues with sound perception and speech tests to evaluate your word recognition. It's a crucial step in identifying any hearing or speech problems.

31 services31 patients

Test to assess middle ear function 92567

A test to assess middle ear function, also known as an impedance audiometry, helps evaluate how well your middle ear works. It measures the movement of your eardrum in response to changes in air pressure. This can help identify issues like fluid build-up, ear infections, or eardrum perforations.

31 services31 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 89103 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$57.07 typical visit price

range $57.07 – $173.24

Typical copayment $14.26 (range $14.26 – $43.31)

Most-billed visit code 99202

Established Patient

$71.14 typical visit price

range $18.27 – $140.96

Typical copayment $17.78 (range $4.56 – $35.24)

Most-billed visit code 99213

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

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 Mai Ly Nguyen's NPI number?

The NPI number for Mai Ly Nguyen is 1336585488. It was assigned to this individual provider in the NPPES registry on May 16, 2013. The provider is also known as Holly Nguyen Au.D..

Where is Mai Ly Nguyen located?

Mai Ly Nguyen practices at 6767 W Tropicana Ave Ste 212, Las Vegas, NV 89103. The listed phone number is (702) 755-9597.

What is Mai Ly Nguyen's specialty?

The primary specialty registered for this NPI is Audiologist with taxonomy code 231H00000X.

Is Mai Ly Nguyen enrolled in Medicare?

Yes. Mai Ly Nguyen is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organization bills Medicare for Mai Ly Nguyen's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Mai Ly Nguyen reassigns Medicare benefits to Audiology By Holly Nguyen LLC (Las Vegas, NV). 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 Mai Ly Nguyen'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 Mai Ly Nguyen was last updated on December 26, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.