REBECCA D GUEST MD
NPI 1073553079
Preventive Medicine - Occupational Medicine in New York, NY
About Rebecca D Guest Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
REBECCA D GUEST MD (NPI 1073553079) is an individual occupational medicine provider in New York, New York, licensed in New York (246696) and active in the NPI registry since June 2006. She is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses 2
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Rebecca D Guest Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Rebecca Guest reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
New York, NY 10025
- Reassigned Medicare billing, New York enrollment
- 5,251 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.
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 7
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
NEW YORK, NY 10021
NEW YORK, NY 10021
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 Rebecca Guest's NPI number?
The NPI number for Rebecca Guest is 1073553079. It was assigned to this individual provider in the NPPES registry on June 7, 2006.
Where is Rebecca Guest located?
Rebecca Guest practices at 222 E 70th St Ehs Mskcc, New York, NY 10021. The listed phone number is (646) 888-4031.
What is Rebecca Guest's specialty?
The primary specialty registered for this NPI is Preventive Medicine, specializing in Occupational Medicine, with taxonomy code 2083X0100X.
Is Rebecca Guest enrolled in Medicare?
Yes. Rebecca Guest is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Rebecca Guest's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Rebecca Guest reassigns Medicare benefits to Montefiore Medical Center (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 Rebecca Guest'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 Rebecca Guest was last updated on February 10, 2009. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 17 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.
# Rebecca D Guest, MD · NPI 1073553079
Occupational Medicine physician in New York, New York. Individual provider, active in the CMS NPPES registry since June 7, 2006.
## Identity
- **NPI:** 1073553079 (Entity type: Individual)
- **Enumerated:** June 7, 2006
- **Primary specialty:** Preventive Medicine - Occupational Medicine · taxonomy 2083X0100X
- **State license:** 246696 (New York)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 222 E 70TH ST, EHS MSKCC, New York, NY 10021-5405
- **Phone:** (646) 888-4031
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** Montefiore Medical Center (NPI 1760288278, New York, NY), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** February 10, 2009
---
Source: [NPI Profile](https://npiprofile.com/npi/1073553079) · Data from the CMS NPPES public registry.