SARAH SAU-AI KEUNG RN
NPI 1609506450
Registered Nurse - Critical Care Medicine in Washington, DC
About Sarah Sau-ai Keung Rn NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
SARAH SAU-AI KEUNG RN (NPI 1609506450) is an individual critical care medicine provider in Washington, District Of Columbia, licensed in California (95199485) and active in the NPI registry since June 2022. She is enrolled in Medicare PECOS and is a graduate of Other (2025).
NPPES Registry Identity
Specialties & Licenses 2
Other Identifiers 1
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
Sarah Sau-ai Keung Rn 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 Reassignment
Medicare enrollment records show Sarah Keung reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Greenwood Village, CO 80111
- Reassigned Medicare billing, Colorado enrollment
- 971 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.
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
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 Sarah Keung's NPI number?
The NPI number for Sarah Keung is 1609506450. It was assigned to this individual provider in the NPPES registry on June 14, 2022.
Where is Sarah Keung located?
Sarah Keung practices at 3700 Reservoir Rd NW, Washington, DC 20007. The listed phone number is (202) 687-9087.
What is Sarah Keung's specialty?
The primary specialty registered for this NPI is Registered Nurse, specializing in Critical Care Medicine, with taxonomy code 163WC0200X.
Is Sarah Keung enrolled in Medicare?
Yes. Sarah Keung 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 Sarah Keung's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Sarah Keung reassigns Medicare benefits to Us Anesthesia Partners Of Colorado Inc. (Greenwood Village, CO). 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 Sarah Keung'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 Sarah Keung was last updated on August 12, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 months 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.
# Sarah Sau-Ai Keung, RN · NPI 1609506450
Critical Care Medicine provider in Washington, District of Columbia. Individual provider, active in the CMS NPPES registry since June 14, 2022.
## Identity
- **NPI:** 1609506450 (Entity type: Individual)
- **Enumerated:** June 14, 2022
- **Primary specialty:** Registered Nurse - Critical Care Medicine · taxonomy 163WC0200X
- **State license:** 95199485 (California)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 3700 RESERVOIR RD NW, Washington, DC 20007-2111
- **Phone:** (202) 687-9087
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging
- **Bills Medicare through:** Us Anesthesia Partners Of Colorado Inc. (NPI 1922365782, Greenwood Village, CO), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2025
## Record status
- **NPPES last updated:** August 12, 2025
- **Other identifiers:** Other 95199485 (CA)
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Source: [NPI Profile](https://npiprofile.com/npi/1609506450) · Data from the CMS NPPES public registry.