ROSEMARY TREWIN MD
NPI 1457092710
Emergency Medicine in Miami, FL
About Rosemary Trewin Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
ROSEMARY TREWIN MD (NPI 1457092710) is an individual emergency medicine provider in Miami, Florida, licensed in Florida (ME174628) and active in the NPI registry since April 2022. She is enrolled in Medicare PECOS, is affiliated with Hca Florida Mercy Hospital, and maintains a secondary practice location in Miami.
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Location 1
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
Rosemary Trewin 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 Rosemary Trewin reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Aventura, FL 33180
- Reassigned Medicare billing, Florida enrollment
- 1,912 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.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Hca Florida Mercy Hospital
Acute Care Hospitals · Miami, FLPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 33133 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.
MIAMI, FL 33133
MIAMI, FL 33133
MIAMI, FL 33133
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 Rosemary Trewin's NPI number?
The NPI number for Rosemary Trewin is 1457092710. It was assigned to this individual provider in the NPPES registry on April 2, 2022.
Where is Rosemary Trewin located?
Rosemary Trewin practices at 3663 S Miami Ave, Miami, FL 33133. The listed phone number is (786) 597-6577.
What is Rosemary Trewin's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is Rosemary Trewin enrolled in Medicare?
Yes. Rosemary Trewin 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 Rosemary Trewin's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Rosemary Trewin reassigns Medicare benefits to Emergency Medicine Services Of Fl, LLC (Aventura, FL). 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 Rosemary Trewin's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Rosemary Trewin accept?
Health plans from Oscar Health Maintenance Organization of Florida list Rosemary Trewin 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 Rosemary Trewin affiliated with any hospitals?
According to CMS data, Rosemary Trewin is affiliated with Hca Florida Mercy Hospital.
When was this NPI record last updated?
The NPPES record for Rosemary Trewin was last updated on June 4, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 months 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.
# Rosemary Trewin, MD · NPI 1457092710
Emergency Medicine physician in Miami, Florida. Individual provider, active in the CMS NPPES registry since April 2, 2022.
## Identity
- **NPI:** 1457092710 (Entity type: Individual)
- **Enumerated:** April 2, 2022
- **Primary specialty:** Emergency Medicine · taxonomy 207P00000X
- **State license:** ME174628 (Florida)
- **Sole proprietor:** No
## Practice location
- **Address:** 3663 S MIAMI AVE, Miami, FL 33133-4253
- **Phone:** (786) 597-6577
## 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:** Emergency Medicine Services Of Fl, LLC (NPI 1043917180, Aventura, FL), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2022
## Record status
- **NPPES last updated:** June 4, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1457092710) · Data from the CMS NPPES public registry.