DR. EFRAT LUTTWAK MD, MPH
NPI 1104552223
Internal Medicine in New York, NY
About Dr. Efrat Luttwak Md, Mph NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. EFRAT LUTTWAK MD, MPH (NPI 1104552223) is an individual internal medicine provider in New York, New York, licensed in New York (32933001) and active in the NPI registry since July 2022. She is enrolled in Medicare PECOS and is a graduate of Other (2014).
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. Efrat Luttwak Md, Mph 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
3Medicare enrollment records show Efrat Luttwak 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 10021
- Reassigned Medicare billing, New York enrollment
- 428 clinicians in this Medicare group
New York, NY 10065
- Reassigned Medicare billing, New York enrollment
- 248 clinicians in this Medicare group
Commack, NY 11725
- Reassigned Medicare billing, New York enrollment
- 265 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.
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.
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 Efrat Luttwak's NPI number?
The NPI number for Efrat Luttwak is 1104552223. It was assigned to this individual provider in the NPPES registry on July 29, 2022.
Where is Efrat Luttwak located?
Efrat Luttwak practices at 530 E 74th St, New York, NY 10021. The listed phone number is (347) 883-5266.
What is Efrat Luttwak's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Efrat Luttwak enrolled in Medicare?
Yes. Efrat Luttwak 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 Efrat Luttwak's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Efrat Luttwak reassigns Medicare benefits to 3 organizations: Memorial Hematology Lymphoma Group (New York, NY), Mskcc Clinical Practice Plan (New York, NY) and Mskcc Regional Network (Commack, 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 Efrat Luttwak'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 Efrat Luttwak was last updated on May 3, 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.
# Dr. Efrat Luttwak, MD, MPH · NPI 1104552223
Internal Medicine physician in New York, New York. Individual provider, active in the CMS NPPES registry since July 29, 2022.
## Identity
- **NPI:** 1104552223 (Entity type: Individual)
- **Enumerated:** July 29, 2022
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** 32933001 (New York)
- **Sole proprietor:** No
## Practice location
- **Address:** 530 E 74TH ST, New York, NY 10021-3459
- **Phone:** (347) 883-5266
## 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:** 3 organizations under Medicare reassignment (form CMS-855R): Memorial Hematology Lymphoma Group (NPI 1245945021, New York, NY); Mskcc Clinical Practice Plan (NPI 1306096508, New York, NY); Mskcc Regional Network (NPI 1740251297, Commack, NY) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2014
## Record status
- **NPPES last updated:** May 3, 2024
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Source: [NPI Profile](https://npiprofile.com/npi/1104552223) · Data from the CMS NPPES public registry.