DR. GRANT ELLSWORTH MD
NPI 1730455866
Internal Medicine - Infectious Disease in New York, NY
About Dr. Grant Ellsworth Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. GRANT ELLSWORTH MD (NPI 1730455866) is an individual infectious disease provider in New York, New York, licensed in New York (291619) and active in the NPI registry since March 2012. He is enrolled in Medicare PECOS, is affiliated with New York-presbyterian Hospital, and is a graduate of Js Weill Medical College, Cornell University (2018).
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. Grant Ellsworth 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 Reassignment
Medicare enrollment records show Grant Ellsworth reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
New York, NY 10013
- Reassigned Medicare billing, New York enrollment
- Medicare enrollment name: Weill Medical College Of Cornell
- 980 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 5
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.
New York-Presbyterian Hospital
Acute Care Hospitals · New York, NYPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 10010 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.
Other Providers at the Same Location NPPES 8
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
NEW YORK, NY 10010
NEW YORK, NY 10010
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 Grant Ellsworth's NPI number?
The NPI number for Grant Ellsworth is 1730455866. It was assigned to this individual provider in the NPPES registry on March 22, 2012.
Where is Grant Ellsworth located?
Grant Ellsworth practices at 53 W 23rd St Fl 6, New York, NY 10010. The listed phone number is (212) 746-7204.
What is Grant Ellsworth's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Infectious Disease, with taxonomy code 207RI0200X.
Is Grant Ellsworth enrolled in Medicare?
Yes. Grant Ellsworth 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 organization bills Medicare for Grant Ellsworth's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Grant Ellsworth reassigns Medicare benefits to Weill Medical College Of Cornell University (New York, NY). The 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 Grant Ellsworth's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Grant Ellsworth affiliated with any hospitals?
According to CMS data, Grant Ellsworth is affiliated with New York-Presbyterian Hospital.
When was this NPI record last updated?
The NPPES record for Grant Ellsworth was last updated on March 13, 2018. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 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. Grant Ellsworth, MD · NPI 1730455866
Infectious Disease physician in New York, New York. Individual provider, active in the CMS NPPES registry since March 22, 2012.
## Identity
- **NPI:** 1730455866 (Entity type: Individual)
- **Enumerated:** March 22, 2012
- **Primary specialty:** Internal Medicine - Infectious Disease · taxonomy 207RI0200X
- **State license:** 291619 (New York)
- **Sole proprietor:** No
## Practice location
- **Address:** 53 W 23RD ST FL 6, New York, NY 10010-4237
- **Phone:** (212) 746-7204 · **Fax:** (212) 746-7203
## 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:** Weill Medical College Of Cornell University (NPI 1801188313, New York, NY), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Js Weill Medical College, Cornell University, class of 2018
## Record status
- **NPPES last updated:** March 13, 2018
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Source: [NPI Profile](https://npiprofile.com/npi/1730455866) · Data from the CMS NPPES public registry.