TAO NGUYEN M.D.
NPI 1598722506
Emergency Medicine in Fontana, CA
About Tao Nguyen M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
TAO NGUYEN M.D. (NPI 1598722506) is an individual emergency medicine provider in Fontana, California, licensed in California (A100059) and active in the NPI registry since April 2006. He is enrolled in Medicare PECOS and is a graduate of Medical College Of Georgia School Of Medicine (2000).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 5
Accepted Insurance
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
Tao Nguyen M.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.
Medicare Billing Reassignments
3Medicare enrollment records show Tao Nguyen reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Colton, CA 92324
- Reassigned Medicare billing, California enrollment
- Also billed through NPI 1740235258 (California)
- 2,323 clinicians in this Medicare group
Alhambra, CA 91801
- Reassigned Medicare billing, California enrollment
- Medicare enrollment name: Andy Shen MD Inc
- 50 clinicians in this Medicare group
Tacoma, WA 98405
- Reassigned Medicare billing, California enrollment
- 20 clinicians in this Medicare group
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 5
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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 92335 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
FONTANA, CA 92335
FONTANA, CA 92335
FONTANA, CA 92335
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 Tao Nguyen's NPI number?
The NPI number for Tao Nguyen is 1598722506. It was assigned to this individual provider in the NPPES registry on April 26, 2006.
Where is Tao Nguyen located?
Tao Nguyen practices at 9985 Sierra Ave Emergency Medicine, Fontana, CA 92335. The listed phone number is (909) 427-5524.
What is Tao Nguyen's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is Tao Nguyen enrolled in Medicare?
Yes. Tao 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 organizations bill Medicare for Tao Nguyen's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Tao Nguyen reassigns Medicare benefits to 3 organizations: Cep America - California (Colton, CA), Andy Shen, M.D., Inc. (Alhambra, CA) and Franciscan Medical Group (Tacoma, WA). Each 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 Tao Nguyen's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Tao Nguyen accept?
Health plans from Premera Blue Cross Blue Shield of Alaska list Tao Nguyen as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
When was this NPI record last updated?
The NPPES record for Tao Nguyen was last updated on November 16, 2009. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 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.
# Tao Nguyen, M.D. · NPI 1598722506
Emergency Medicine physician in Fontana, California. Individual provider, active in the CMS NPPES registry since April 26, 2006.
## Identity
- **NPI:** 1598722506 (Entity type: Individual)
- **Enumerated:** April 26, 2006
- **Primary specialty:** Emergency Medicine · taxonomy 207P00000X
- **State license:** A100059 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 9985 SIERRA AVE, EMERGENCY MEDICINE, Fontana, CA 92335-6720
- **Phone:** (909) 427-5524
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 3 organizations under Medicare reassignment (form CMS-855R): Cep America - California (NPI 1306899166, Colton, CA); Andy Shen, M.D., Inc. (NPI 1457427221, Alhambra, CA); Franciscan Medical Group (NPI 1366539421, Tacoma, WA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Medical College Of Georgia School Of Medicine, class of 2000
## Record status
- **NPPES last updated:** November 16, 2009
- **Other identifiers:** Other 000000329987 (OH); Medicaid 2486715 (OH); Medicare UPIN I07249; and 2 more
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Source: [NPI Profile](https://npiprofile.com/npi/1598722506) · Data from the CMS NPPES public registry.