REBECCA S. SINAI, D.O., CHTD
NPI 1538281886
Internal Medicine in Las Vegas, NV
About Rebecca S. Sinai, D.o., Chtd NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
REBECCA S. SINAI, D.O., CHTD (NPI 1538281886) is a healthcare organization registered as an internal medicine in Las Vegas, Nevada and active in the NPI registry since April 2007. The organization lists Rebecca Sinai, President, as its authorized official.
NPPES Registry Identity
Specialties & Licenses
Group Practice 1
Medicare Participation & PECOS CMS
Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Rebecca S. Sinai, D.o., Chtd is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Clinicians Billing Medicare Through This Organization
Medicare enrollment records show 1 clinician reassigns Medicare billing to Rebecca S. Sinai, D.O., Chtd, which bills Medicare for the services this clinician delivers.
Clinician (1)
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
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 Rebecca S. Sinai, D.O., Chtd's NPI number?
The NPI number for Rebecca S. Sinai, D.O., Chtd is 1538281886. It was assigned to this organization in the NPPES registry on April 6, 2007.
Where is Rebecca S. Sinai, D.O., Chtd located?
Rebecca S. Sinai, D.O., Chtd is located at 7455 W Washington Ave Ste 200, Las Vegas, NV 89128. The listed phone number is (702) 749-8891.
What is Rebecca S. Sinai, D.O., Chtd's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Rebecca S. Sinai, D.O., Chtd enrolled in Medicare?
Yes. Rebecca S. Sinai, D.O., Chtd is registered in the Medicare PECOS enrollment system.
How many clinicians bill Medicare through Rebecca S. Sinai, D.O., Chtd?
According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Internal Medicine) reassigns their Medicare billing to Rebecca S. Sinai, D.O., Chtd. A 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 the clinician's services. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
When was this NPI record last updated?
The NPPES record for Rebecca S. Sinai, D.O., Chtd was last updated on July 27, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.
# Rebecca S. Sinai, D.o., Chtd · NPI 1538281886
Internal Medicine organization in Las Vegas, Nevada. Organization record, active in the CMS NPPES registry since April 6, 2007.
## Identity
- **NPI:** 1538281886 (Entity type: Organization)
- **Enumerated:** April 6, 2007
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **Organization subpart:** No
- **Authorized official:** Rebecca Sinai, PRESIDENT
## Practice location
- **Address:** 7455 W WASHINGTON AVE STE 200, Las Vegas, NV 89128-4338
- **Phone:** (702) 749-8891
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Clinicians billing through this organization:** 1 clinician (Internal Medicine) reassigns Medicare billing to this organization (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** July 27, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1538281886) · Data from the CMS NPPES public registry.