DR. ROY F WILLIAMS MD
NPI 1679561609
Specialist in Miami Beach, FL
About Dr. Roy F Williams Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. ROY F WILLIAMS MD (NPI 1679561609) is an individual specialist in Miami Beach, Florida, licensed in Florida (ME0071333) and active in the NPI registry since October 2005. He is enrolled in Medicare PECOS, is affiliated with Mount Sinai Medical Center Of Florida, Inc, and is a graduate of State University Of New York Downstate Medical Center (1988).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 3
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
Dr. Roy F Williams 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 Roy Williams reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Miami Beach, FL 33140
- Reassigned Medicare billing, Florida enrollment
- 240 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.
Mount Sinai Medical Center Of Florida, Inc
Acute Care Hospitals · Miami Beach, FLMedicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
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 BEACH, FL 33140
MIAMI BEACH, FL 33140
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 Roy Williams's NPI number?
The NPI number for Roy Williams is 1679561609. It was assigned to this individual provider in the NPPES registry on October 13, 2005.
Where is Roy Williams located?
Roy Williams practices at 4300 Alton Rd Suite 2110, Miami Beach, FL 33140. The listed phone number is (305) 674-2780.
What is Roy Williams's specialty?
The primary specialty registered for this NPI is Specialist with taxonomy code 174400000X.
Is Roy Williams enrolled in Medicare?
Yes. Roy Williams 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 Roy Williams's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Roy Williams reassigns Medicare benefits to Physician Practices Of Msmc, LLC (Miami Beach, 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 Roy Williams's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Roy Williams accept?
Health plans from AvMed, Cigna HealthCare of Florida, Inc., Cigna Healthcare, Florida Blue (BlueCross BlueShield FL) and Florida Blue HMO (a BlueCross BlueShield FL company) and 1 other insurer list Roy Williams 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 Roy Williams affiliated with any hospitals?
According to CMS data, Roy Williams is affiliated with Mount Sinai Medical Center Of Florida, Inc.
When was this NPI record last updated?
The NPPES record for Roy Williams was last updated on October 17, 2012. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 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.