WEIWEI CHI MD
NPI 1669714291
Internal Medicine - Rheumatology in New York, NY
About Weiwei Chi Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
WEIWEI CHI MD (NPI 1669714291) is an individual rheumatology provider in New York, New York, licensed in New York (277803) and active in the NPI registry since March 2013. She is enrolled in Medicare PECOS, is affiliated with Mount Sinai Hospital, and maintains a secondary practice location in New York.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 1
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Weiwei Chi Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
3Medicare enrollment records show Weiwei Chi reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
New York, NY 10029
- Reassigned Medicare billing, New York enrollment
- 33 clinicians in this Medicare group
Elmhurst, NY 11373
- Reassigned Medicare billing, New York enrollment
- 3 clinicians in this Medicare group
Flushing, NY 11354
- Reassigned Medicare billing, New York enrollment
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.
Hospital Affiliations CMS Care Compare 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Mount Sinai Hospital
Acute Care Hospitals · New York, NYMount Sinai Beth Israel
Acute Care Hospitals · New York, NYPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 10029 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.
NEW YORK, NY 10029
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 Weiwei Chi's NPI number?
The NPI number for Weiwei Chi is 1669714291. It was assigned to this individual provider in the NPPES registry on March 21, 2013.
Where is Weiwei Chi located?
Weiwei Chi practices at 5 E 98th St, New York, NY 10029. The listed phone number is (212) 241-1671.
What is Weiwei Chi's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Rheumatology, with taxonomy code 207RR0500X.
Is Weiwei Chi enrolled in Medicare?
Yes. Weiwei Chi is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Weiwei Chi's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Weiwei Chi reassigns Medicare benefits to 3 organizations: Icahn School Of Medicine At Mount Sinai (New York, NY), C & W Medical, LLC (Elmhurst, NY) and W. C. Rheumatology, PLLC (Flushing, NY). 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 Weiwei Chi's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Weiwei Chi affiliated with any hospitals?
According to CMS data, Weiwei Chi is affiliated with Mount Sinai Hospital and Mount Sinai Beth Israel.
When was this NPI record last updated?
The NPPES record for Weiwei Chi was last updated on February 25, 2019. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 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.
# Weiwei Chi, MD · NPI 1669714291
Rheumatology physician in New York, New York. Individual provider, active in the CMS NPPES registry since March 21, 2013.
## Identity
- **NPI:** 1669714291 (Entity type: Individual)
- **Enumerated:** March 21, 2013
- **Primary specialty:** Internal Medicine - Rheumatology · taxonomy 207RR0500X
- **State license:** 277803 (New York)
- **Sole proprietor:** No
## Practice location
- **Address:** 5 E 98TH ST, New York, NY 10029-6501
- **Phone:** (212) 241-1671
## 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:** 3 organizations under Medicare reassignment (form CMS-855R): Icahn School Of Medicine At Mount Sinai (NPI 1043571086, New York, NY); C & W Medical, LLC (NPI 1962690446, Elmhurst, NY); W. C. Rheumatology, PLLC (NPI 1396585287, Flushing, NY) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Icahn School Of Medicine At Mount Sinai, class of 2013
## Record status
- **NPPES last updated:** February 25, 2019
---
Source: [NPI Profile](https://npiprofile.com/npi/1669714291) · Data from the CMS NPPES public registry.