REBECCA FROST HOPPE MD
NPI 1922537851
Internal Medicine in Mount Kisco, NY
About Rebecca Frost Hoppe Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
REBECCA FROST HOPPE MD (NPI 1922537851) is an individual internal medicine provider in Mount Kisco, New York, licensed in New Mexico (MD2023-1053) and active in the NPI registry since June 2017. She is enrolled in Medicare PECOS, is affiliated with Northern Westchester Hospital, and maintains 4 additional practice locations.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Locations 4
Accepted Insurance
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
Rebecca Frost Hoppe 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
4Medicare enrollment records show Rebecca Hoppe reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Mount Kisco, NY 10549
- Reassigned Medicare billing, New York enrollment
- Medicare enrollment name: Optum Medical Care PC
- 1,601 clinicians in this Medicare group
Oxford, MA 01540
- Reassigned Medicare billing, Massachusetts enrollment
- 2,902 clinicians in this Medicare group
Hyannis, MA 02601
- Reassigned Medicare billing, Massachusetts enrollment
- 678 clinicians in this Medicare group
Humble, TX 77338
- Reassigned Medicare billing, New Mexico enrollment
- 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.
Areas of Expertise CMS Part B claims 4
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.
Northern Westchester Hospital
Acute Care Hospitals · Mount Kisco, NYPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 10549 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.
MOUNT KISCO, NY 10549
MOUNT KISCO, NY 10549
MOUNT KISCO, NY 10549
MOUNT KISCO, NY 10549
MOUNT KISCO, NY 10549
MOUNT KISCO, NY 10549
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 Hoppe's NPI number?
The NPI number for Rebecca Hoppe is 1922537851. It was assigned to this individual provider in the NPPES registry on June 5, 2017.
Where is Rebecca Hoppe located?
Rebecca Hoppe practices at 400 E Main St, Mount Kisco, NY 10549. The listed phone number is (914) 666-1371.
What is Rebecca Hoppe's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Rebecca Hoppe enrolled in Medicare?
Yes. Rebecca Hoppe 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 Rebecca Hoppe's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Rebecca Hoppe reassigns Medicare benefits to 4 organizations: Optum Medical Care, P.C. (Mount Kisco, NY), Umass Memorial Medical Group, Inc. (Oxford, MA), Physicians Of Cape Cod Hospital (Hyannis, MA) and Hospitalist Medicine Physicians Of Texas, PLLC (Humble, TX). 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 Rebecca Hoppe's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Rebecca Hoppe accept?
Health plans from Taro Health list Rebecca Hoppe as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
Is Rebecca Hoppe affiliated with any hospitals?
According to CMS data, Rebecca Hoppe is affiliated with Northern Westchester Hospital.
When was this NPI record last updated?
The NPPES record for Rebecca Hoppe was last updated on October 17, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 days 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 Frost Hoppe, MD · NPI 1922537851
Internal Medicine physician in Mount Kisco, New York. Individual provider, active in the CMS NPPES registry since June 5, 2017.
## Identity
- **NPI:** 1922537851 (Entity type: Individual)
- **Enumerated:** June 5, 2017
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** MD2023-1053 (New Mexico)
- **Sole proprietor:** No
## Practice location
- **Address:** 400 E MAIN ST, Mount Kisco, NY 10549-3417
- **Phone:** (914) 666-1371
## 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:** 4 organizations under Medicare reassignment (form CMS-855R): Optum Medical Care, P.C. (NPI 1982643003, Mount Kisco, NY); Umass Memorial Medical Group, Inc. (NPI 1982381018, Oxford, MA); Physicians Of Cape Cod Hospital (NPI 1679832364, Hyannis, MA); Hospitalist Medicine Physicians Of Texas, PLLC (NPI 1629307095, Humble, TX) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2017
## Record status
- **NPPES last updated:** October 17, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1922537851) · Data from the CMS NPPES public registry.