TAM THANH DANG M.D.
NPI 1275824799
Emergency Medicine in Corona, CA
About Tam Thanh Dang M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
TAM THANH DANG M.D. (NPI 1275824799) is an individual emergency medicine provider in Corona, California, licensed in California (A141987) and active in the NPI registry since May 2011. He is enrolled in Medicare PECOS and is a graduate of Other (2011).
NPPES Registry Identity
Specialties & Licenses 2
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
Tam Thanh Dang 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
5Medicare enrollment records show Tam Dang reassigns Medicare billing to 5 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Corona, CA 92882
- Reassigned Medicare billing, California enrollment
- 114 clinicians in this Medicare group
Anaheim, CA 92801
- Reassigned Medicare billing, California enrollment
- 40 clinicians in this Medicare group
Anaheim, CA 92804
- Reassigned Medicare billing, California enrollment
- 21 clinicians in this Medicare group
Newport Beach, CA 92663
- Reassigned Medicare billing, California enrollment
- 61 clinicians in this Medicare group
Newport Beach, CA 92663
- Reassigned Medicare billing, California enrollment
- 59 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 6
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 92882 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.
CORONA, CA 92882
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 Tam Dang's NPI number?
The NPI number for Tam Dang is 1275824799. It was assigned to this individual provider in the NPPES registry on May 2, 2011.
Where is Tam Dang located?
Tam Dang practices at 800 S Main St, Corona, CA 92882. The listed phone number is (951) 737-4343.
What is Tam Dang's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is Tam Dang enrolled in Medicare?
Yes. Tam Dang 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 Tam Dang's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Tam Dang reassigns Medicare benefits to 5 organizations: Corona Regional Emergency Medical Associates Inc (Corona, CA), Southland Emergency Medical Associates Inc (Anaheim, CA), South Coast Emergency Medical Group (Anaheim, CA), Emergency Physicians Of Orange County (Newport Beach, CA) and Newport Emergency Medical Group Inc (Newport Beach, CA). 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 Tam Dang'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 Tam Dang was last updated on July 22, 2016. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 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.
# Tam Thanh Dang, M.D. · NPI 1275824799
Emergency Medicine physician in Corona, California. Individual provider, active in the CMS NPPES registry since May 2, 2011.
## Identity
- **NPI:** 1275824799 (Entity type: Individual)
- **Enumerated:** May 2, 2011
- **Primary specialty:** Emergency Medicine · taxonomy 207P00000X
- **State license:** A141987 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 800 S MAIN ST, Corona, CA 92882-3420
- **Phone:** (951) 737-4343
## 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:** 5 organizations under Medicare reassignment (form CMS-855R): Corona Regional Emergency Medical Associates Inc (NPI 1134629298, Corona, CA); Southland Emergency Medical Associates Inc (NPI 1932640935, Anaheim, CA); South Coast Emergency Medical Group (NPI 1831294594, Anaheim, CA); Emergency Physicians Of Orange County (NPI 1912771569, Newport Beach, CA); Newport Emergency Medical Group Inc (NPI 1922061779, Newport Beach, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2011
## Record status
- **NPPES last updated:** July 22, 2016
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Source: [NPI Profile](https://npiprofile.com/npi/1275824799) · Data from the CMS NPPES public registry.