DENNIS S CHI MD
NPI 1245215565
Obstetrics & Gynecology - Gynecologic Oncology in New York, NY
About Dennis S Chi Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DENNIS S CHI MD (NPI 1245215565) is an individual gynecologic oncology provider in New York, New York, licensed in New York (187616) and active in the NPI registry since December 2005. He is enrolled in Medicare PECOS and is a graduate of New York University School Of Medicine (1990).
NPPES Registry Identity
Specialties & Licenses
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
Dennis S Chi Md 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
2Medicare enrollment records show Dennis Chi reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
New York, NY 10021
- Reassigned Medicare billing, New York enrollment
- 452 clinicians in this Medicare group
Montvale, NJ 07645
- Reassigned Medicare billing, New Jersey enrollment
- 401 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 9
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 10021 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.
Referred Medical Equipment & Supplies CMS DME claims 3
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
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 10021
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 Dennis Chi's NPI number?
The NPI number for Dennis Chi is 1245215565. It was assigned to this individual provider in the NPPES registry on December 9, 2005.
Where is Dennis Chi located?
Dennis Chi practices at 1275 York Ave, New York, NY 10021. The listed phone number is (646) 227-3813.
What is Dennis Chi's specialty?
The primary specialty registered for this NPI is Obstetrics & Gynecology, specializing in Gynecologic Oncology, with taxonomy code 207VX0201X.
Is Dennis Chi enrolled in Medicare?
Yes. Dennis Chi 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 Dennis Chi's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Dennis Chi reassigns Medicare benefits to 2 organizations: Mskcc Surgery Group (New York, NY) and Msk Bergen (Montvale, NJ). 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 Dennis Chi'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 Dennis Chi was last updated on July 13, 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.
# Dennis S Chi, MD · NPI 1245215565
Gynecologic Oncology physician in New York, New York. Individual provider, active in the CMS NPPES registry since December 9, 2005.
## Identity
- **NPI:** 1245215565 (Entity type: Individual)
- **Enumerated:** December 9, 2005
- **Primary specialty:** Obstetrics & Gynecology - Gynecologic Oncology · taxonomy 207VX0201X
- **State license:** 187616 (New York)
- **Sole proprietor:** No
## Practice location
- **Address:** 1275 YORK AVE, New York, NY 10021-6007
- **Phone:** (646) 227-3813
## 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:** 2 organizations under Medicare reassignment (form CMS-855R): Mskcc Surgery Group (NPI 1699766261, New York, NY); Msk Bergen (NPI 1558814657, Montvale, NJ) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** New York University School Of Medicine, class of 1990
## Record status
- **NPPES last updated:** July 13, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1245215565) · Data from the CMS NPPES public registry.