DR. LOUISE CHUU M.D.
NPI 1811044001
Obstetrics & Gynecology in New York, NY
About Dr. Louise Chuu M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. LOUISE CHUU M.D. (NPI 1811044001) is an individual obstetrics & gynecology provider in New York, New York, licensed in New York (241629) and active in the NPI registry since January 2007. She is enrolled in Medicare PECOS, is affiliated with Lenox Hill Hospital, and is a graduate of State University Of Ny Upstate Medical University (2002).
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
Dr. Louise Chuu M.d. 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 Louise Chuu 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 10019
- Reassigned Medicare billing, New York enrollment
- 81 clinicians in this Medicare group
New Hyde Park, NY 11040
- Reassigned Medicare billing, New York enrollment
- 9,353 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
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
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Lenox Hill Hospital
Acute Care Hospitals · New York, NYPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 10019 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
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
NEW YORK, NY 10019
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 Louise Chuu's NPI number?
The NPI number for Louise Chuu is 1811044001. It was assigned to this individual provider in the NPPES registry on January 3, 2007.
Where is Louise Chuu located?
Louise Chuu practices at 4 West 58th Street 9th Floor 9th Floor, New York, NY 10019. The listed phone number is (929) 480-5400.
What is Louise Chuu's specialty?
The primary specialty registered for this NPI is Obstetrics & Gynecology with taxonomy code 207V00000X.
Is Louise Chuu enrolled in Medicare?
Yes. Louise Chuu 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 Louise Chuu's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Louise Chuu reassigns Medicare benefits to 2 organizations: Icahn School Of Medicine At Mount Sinai (New York, NY) and North Shore - Lij Medical PC (New Hyde Park, 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 Louise Chuu's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Louise Chuu affiliated with any hospitals?
According to CMS data, Louise Chuu is affiliated with Lenox Hill Hospital.
When was this NPI record last updated?
The NPPES record for Louise Chuu was last updated on June 4, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.
# Dr. Louise Chuu, M.D. · NPI 1811044001
Obstetrics & Gynecology physician in New York, New York. Individual provider, active in the CMS NPPES registry since January 3, 2007.
## Identity
- **NPI:** 1811044001 (Entity type: Individual)
- **Enumerated:** January 3, 2007
- **Primary specialty:** Obstetrics & Gynecology · taxonomy 207V00000X
- **State license:** 241629 (New York)
- **Sole proprietor:** No
## Practice location
- **Address:** 4 WEST 58TH STREET 9TH FLOOR, 9TH FLOOR, New York, NY 10019
- **Phone:** (929) 480-5400 · **Fax:** (917) 261-2841
## 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): Icahn School Of Medicine At Mount Sinai (NPI 1922411065, New York, NY); North Shore - Lij Medical PC (NPI 1790043479, New Hyde Park, NY) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** State University Of Ny Upstate Medical University, class of 2002
## Record status
- **NPPES last updated:** June 4, 2021
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Source: [NPI Profile](https://npiprofile.com/npi/1811044001) · Data from the CMS NPPES public registry.