KATHARINE FROST MD
NPI 1548898869
Obstetrics & Gynecology in Greenlawn, NY
About Katharine Frost Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
KATHARINE FROST MD (NPI 1548898869) is an individual obstetrics & gynecology provider in Greenlawn, New York, licensed in New York (329690) and active in the NPI registry since March 2020. She is enrolled in Medicare PECOS, is affiliated with Ns/lij Hs Huntington Hospital, and is a graduate of State University Of New York At Stony Brook, School Of Medicine (2020).
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
Katharine Frost 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 Katharine Frost 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
Great Neck, NY 11021
- Reassigned Medicare billing, New York enrollment
- 9,353 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 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Ns/Lij Hs Huntington Hospital
Acute Care Hospitals · Huntington, NYMount Sinai South Nassau
Acute Care Hospitals · Oceanside, 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.
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
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 Katharine Frost's NPI number?
The NPI number for Katharine Frost is 1548898869. It was assigned to this individual provider in the NPPES registry on March 31, 2020.
Where is Katharine Frost located?
Katharine Frost practices at 5 Cuba Hill Rd, Greenlawn, NY 11740. The listed phone number is (631) 628-5000.
What is Katharine Frost's specialty?
The primary specialty registered for this NPI is Obstetrics & Gynecology with taxonomy code 207V00000X.
Is Katharine Frost enrolled in Medicare?
Yes. Katharine Frost 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 Katharine Frost's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Katharine Frost reassigns Medicare benefits to 2 organizations: North Shore Medical Group Of The Mount Sinai School Of Medicine (Greenlawn, NY) and North Shore-Lij Medical PC (Great Neck, 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 Katharine Frost's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Katharine Frost affiliated with any hospitals?
According to CMS data, Katharine Frost is affiliated with Ns/Lij Hs Huntington Hospital and Mount Sinai South Nassau.
When was this NPI record last updated?
The NPPES record for Katharine Frost was last updated on August 22, 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.
# Katharine Frost, MD · NPI 1548898869
Obstetrics & Gynecology physician in Greenlawn, New York. Individual provider, active in the CMS NPPES registry since March 31, 2020.
## Identity
- **NPI:** 1548898869 (Entity type: Individual)
- **Enumerated:** March 31, 2020
- **Primary specialty:** Obstetrics & Gynecology · taxonomy 207V00000X
- **State license:** 329690 (New York)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 5 CUBA HILL RD, Greenlawn, NY 11740-1624
- **Phone:** (631) 628-5000
## 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:** 2 organizations under Medicare reassignment (form CMS-855R): North Shore Medical Group Of The Mount Sinai School Of Medicine (NPI 1275640609, Greenlawn, NY); North Shore-Lij Medical PC (NPI 1053688572, Great Neck, NY) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** State University Of New York At Stony Brook, School Of Medicine, class of 2020
## Record status
- **NPPES last updated:** August 22, 2024
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Source: [NPI Profile](https://npiprofile.com/npi/1548898869) · Data from the CMS NPPES public registry.