CHAU M T NGUYEN-THIO MD
NPI 1225010135
Internal Medicine in Eastvale, CA

Q: What is Chau Nguyen-thio's NPI number?

The NPI number for Chau Nguyen-thio is 1225010135. It was assigned to this individual provider in the NPPES registry on November 16, 2005. The provider is also known as Chau M T Nguyen.

Q: What is Chau Nguyen-thio's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Q: When was this NPI record last updated?

The NPPES record for Chau Nguyen-thio was last updated on February 25, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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 November 16, 2005PECOS Enrolled

12742 LIMONITE AVE, EASTVALE, CA 92880(951) 739-2717 Get Directions Write a Review

NPPES record last updated: February 25, 2020. Verified against the NPPES registry weekly; last sync: October 18, 2026.

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About Chau M T Nguyen-thio Md NPPES

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

CHAU M T NGUYEN-THIO MD (NPI 1225010135) is an individual internal medicine provider in Eastvale, California, licensed in California (G79548) and active in the NPI registry since November 2005. She is enrolled in Medicare PECOS and maintains a secondary practice location in Riverside.

NPPES Registry Identity

NPI1225010135

Entity TypeIndividualFemale

Primary Taxonomy207R00000X

Provider Legal NameCHAU M T NGUYEN-THIOCredential: MD

Location Address12742 LIMONITE AVEEastvale, CA 92880-9630

Mailing Address12742 Limonite AveEastvale, CA 92880-9630 · (951) 739-2717

Phone(951) 739-2717

Sole ProprietorNo

Enumeration DateNovember 16, 2005

Last NPPES UpdateFebruary 25, 2020

✔ NPI 1225010135 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207R00000X

License✔ Licensed in CA · G79548

Definition

A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.

12742 LIMONITE AVE, Eastvale, CA 92880

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Other Names 1

Other Name (5)Chau M T Nguyen

Secondary Practice Location 1

Location 17117 Brockton AveRiverside, CA 92506-2615 · Phone (951) 782-3612 · Fax (951) 784-3269

Other Identifiers 2

Other1730180415Group Npi #

OtherZZZ31887ZGroup Site #

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Chau M T Nguyen-thio Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignment

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

Riverside Medical Clinic, Inc

Same address

Family Medicine

12742 LIMONITE AVE
Eastvale, CA 92880

Reassigned Medicare billing, California enrollment
349 clinicians in this Medicare group

NPI 1972845535 (951) 683-6370

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

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 92880 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

$136.04 typical visit price

range $59.60 – $179.42

Typical copayment $34.01 (range $14.90 – $44.85)

Most-billed visit code 99204

Established Patient

$104.64 typical visit price

range $19.37 – $146.42

Typical copayment $26.16 (range $4.84 – $36.60)

Most-billed visit code 99214

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

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

Reported Quality Measures

Clinical Information Reconciliation

For at least one transition of care or referral received or patient encounter in which the MIPS eligible clinician has never before encountered the patient, the MIPS eligible clinician performs clinical information reconciliation.

23%132 patients1/55-star benchmark: 100%

e-Prescribing

At least one permissible prescription written by the MIPS eligible clinician is queried for a drug formulary and transmitted electronically using certified EHR technology.

89%314 patients4/55-star benchmark: 100%

Patient-Generated Health Data

Patient-generated health data or data from a non-clinical setting is incorporated into the certified EHR technology for at least one unique patient seen by the MIPS eligible clinician during the performance period.

1%186 patients

Patient-Specific Education

The MIPS eligible clinician must use clinically relevant information from certified EHR technology to identify patient-specific educational resources and provide electronic access to those materials to at least one unique patient seen by the MIPS eligible…

91%186 patients4/55-star benchmark: 100%

Provide Patient Access

For at least one unique patient seen by the MIPS eligible clinician: (1) The patient (or the patient authorized representative) is provided timely access to view online, download, and transmit his or her health information; and (2) The MIPS eligible clinician…

80%186 patients4/55-star benchmark: 100%

Request/Accept Summary of Care

98%129 patients4/55-star benchmark: 100%

Secure Messaging

For at least one unique patient seen by the MIPS eligible clinician during the performance period, a secure message was sent using the electronic messaging function of certified EHR technology to the patient (or the patient-authorized representative), or in…

40%186 patients3/55-star benchmark: 75%

View, Download and Transmit (VDT)

During the performance period, at least one unique patient (or patient-authorized representatives) seen by the MIPS eligible clinician actively engages with the EHR made accessible by the MIPS eligible clinician.

35%186 patients

Providers report different measures because they deliver different services; reporting more or less information is not a reflection of quality. Star ratings appear only where CMS assigned them.

Other Providers at the Same Location NPPES 9

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

CHARLES HUNT BALLARD D.O.

Family Medicine