DR. GRACE TYNDALL MD
NPI 1063704880
Internal Medicine in Greenlawn, NY
About Dr. Grace Tyndall Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. GRACE TYNDALL MD (NPI 1063704880) is an individual internal medicine provider in Greenlawn, New York, licensed in New York (278944) and active in the NPI registry since May 2011. She is enrolled in Medicare PECOS, is affiliated with North Shore University Hospital, and is a graduate of State University Of New York At Stony Brook, School Of Medicine (2010).
NPPES Registry Identity
Specialties & Licenses
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
Dr. Grace Tyndall 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 Grace Tyndall reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Greenlawn, NY 11740
- Reassigned Medicare billing, New York enrollment
- 572 clinicians in this Medicare group
Mount Kisco, NY 10549
- Reassigned Medicare billing, New York enrollment
- Medicare enrollment name: Optum Medical Care PC
- 1,601 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 26
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.
North Shore University Hospital
Acute Care Hospitals · Manhasset, NYPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 11740 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Referred Medical Equipment & Supplies CMS DME claims
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.
GREENLAWN, NY 11740
GREENLAWN, NY 11740
GREENLAWN, NY 11740
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 Grace Tyndall's NPI number?
The NPI number for Grace Tyndall is 1063704880. It was assigned to this individual provider in the NPPES registry on May 12, 2011.
Where is Grace Tyndall located?
Grace Tyndall practices at 5 Cuba Hill Rd, Greenlawn, NY 11740. The listed phone number is (631) 628-5000.
What is Grace Tyndall's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Grace Tyndall enrolled in Medicare?
Yes. Grace Tyndall 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 Grace Tyndall's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Grace Tyndall reassigns Medicare benefits to 2 organizations: North Shore Medical Group Of The Mount Sinai School Of Medicine (Greenlawn, NY) and Optum Medical Care, P.C. (Mount Kisco, 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 Grace Tyndall's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Grace Tyndall affiliated with any hospitals?
According to CMS data, Grace Tyndall is affiliated with North Shore University Hospital.
When was this NPI record last updated?
The NPPES record for Grace Tyndall was last updated on January 30, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.