TROY TRIEN HOANG MD
NPI 1639304488
Psychiatry & Neurology - Neurology in Washington, DC
About Troy Trien Hoang Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
TROY TRIEN HOANG MD (NPI 1639304488) is an individual neurology provider in Washington, District Of Columbia, licensed in North Carolina (2022-00512) and active in the NPI registry since May 2009. He is enrolled in Medicare PECOS and maintains 3 additional practice locations.
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Locations 3
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Troy Trien Hoang Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Troy Hoang reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Oak Lawn, IL 60453
- Reassigned Medicare billing, Illinois enrollment
- Medicare enrollment name: Advocate Health And Hospitals Corporation
- 4,870 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 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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 20007 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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.
WASHINGTON, DC 20007
WASHINGTON, DC 20007
WASHINGTON, DC 20007
WASHINGTON, DC 20007
WASHINGTON, DC 20007
WASHINGTON, DC 20007
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 Troy Hoang's NPI number?
The NPI number for Troy Hoang is 1639304488. It was assigned to this individual provider in the NPPES registry on May 22, 2009.
Where is Troy Hoang located?
Troy Hoang practices at 3800 Reservoir Rd NW Department Of Neurology, Washington, DC 20007. The listed phone number is (202) 444-2600.
What is Troy Hoang's specialty?
The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Neurology, with taxonomy code 2084N0400X.
Is Troy Hoang enrolled in Medicare?
Yes. Troy Hoang is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Troy Hoang's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Troy Hoang reassigns Medicare benefits to Advocate Health & Hospitals Corporation (Oak Lawn, IL). 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 Troy Hoang's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Troy Hoang accept?
Health plans from Oscar Health list Troy Hoang 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 Troy Hoang was last updated on February 27, 2024. 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.
# Troy Trien Hoang, MD · NPI 1639304488
Neurology physician in Washington, District of Columbia. Individual provider, active in the CMS NPPES registry since May 22, 2009.
## Identity
- **NPI:** 1639304488 (Entity type: Individual)
- **Enumerated:** May 22, 2009
- **Primary specialty:** Psychiatry & Neurology - Neurology · taxonomy 2084N0400X
- **State license:** 2022-00512 (North Carolina)
- **Sole proprietor:** No
## Practice location
- **Address:** 3800 RESERVOIR RD NW, DEPARTMENT OF NEUROLOGY, Washington, DC 20007-2113
- **Phone:** (202) 444-2600
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** Advocate Health & Hospitals Corporation (NPI 1912936014, Oak Lawn, IL), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** February 27, 2024
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Source: [NPI Profile](https://npiprofile.com/npi/1639304488) · Data from the CMS NPPES public registry.