DR. WILLIAM BARRY CASEY M.D.
NPI 1811933047
Radiology - Radiation Oncology in Sebring, FL
About Dr. William Barry Casey M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. WILLIAM BARRY CASEY M.D. (NPI 1811933047) is an individual radiation oncology provider in Sebring, Florida, licensed in Florida (ME138036) and active in the NPI registry since June 2006. He is enrolled in Medicare PECOS, is affiliated with Adventhealth Sebring, and maintains 4 additional practice locations.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Locations 4
Other Identifiers 2
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. William Barry Casey M.d. 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
8Medicare enrollment records show William Casey reassigns Medicare billing to 8 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Orlando, FL 32827
- Reassigned Medicare billing, Florida enrollment
- 433 clinicians in this Medicare group
Orlando, FL 32803
- Reassigned Medicare billing, Florida enrollment
- 428 clinicians in this Medicare group
Springfield, MA 01104
- Reassigned Medicare billing, Massachusetts enrollment
- 22 clinicians in this Medicare group
Fairhaven, MA 02719
- Reassigned Medicare billing, Massachusetts enrollment
- 1,144 clinicians in this Medicare group
Worcester, MA 01608
- Reassigned Medicare billing, Massachusetts enrollment
- 197 clinicians in this Medicare group
Watertown, MA 02472
- Reassigned Medicare billing, Massachusetts enrollment
- 1,103 clinicians in this Medicare group
Boston, MA 02215
- Reassigned Medicare billing, Massachusetts enrollment
- 1,477 clinicians in this Medicare group
Boston, MA 02215
- Reassigned Medicare billing, Massachusetts enrollment
- 2,579 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 6
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 5
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Adventhealth Sebring
Acute Care Hospitals · Sebring, FLMercy Medical Ctr
Acute Care Hospitals · Springfield, MASouthcoast Hospitals Group
Acute Care Hospitals · Fall River, MABeth Israel Deaconess Medical Center
Acute Care Hospitals · Boston, MAWinchester Hospital
Acute Care Hospitals · Winchester, MAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 33872 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 4
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
SEBRING, FL 33872
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 William Casey's NPI number?
The NPI number for William Casey is 1811933047. It was assigned to this individual provider in the NPPES registry on June 22, 2006.
Where is William Casey located?
William Casey practices at 4416 Sun N Lake Blvd, Sebring, FL 33872. The listed phone number is (863) 382-2049.
What is William Casey's specialty?
The primary specialty registered for this NPI is Radiology, specializing in Radiation Oncology, with taxonomy code 2085R0001X.
Is William Casey enrolled in Medicare?
Yes. William Casey 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 William Casey's services?
According to the CMS Revalidation Reassignment List (October 2026 release), William Casey reassigns Medicare benefits to 8 organizations: Florida Radiology Imaging At Lake Mary, LLC (Orlando, FL), Florida Hospital Medical Group Inc (Orlando, FL), Mercy Medical Group, Inc. (Springfield, MA), Southcoast Physicians Group, Inc. (Fairhaven, MA), Saint Vincent Physician Services, Inc. (Worcester, MA) and 3 more organizations, listed in the Medicare section above. 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 William Casey's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does William Casey accept?
Health plans from Anthem Blue Cross and Blue Shield and Taro Health list William Casey 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 William Casey affiliated with any hospitals?
According to CMS data, William Casey is affiliated with Adventhealth Sebring, Mercy Medical Ctr, Southcoast Hospitals Group, Beth Israel Deaconess Medical Center and Winchester Hospital.
When was this NPI record last updated?
The NPPES record for William Casey was last updated on February 12, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 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.
# Dr. William Barry Casey, M.D. · NPI 1811933047
Radiation Oncology physician in Sebring, Florida. Individual provider, active in the CMS NPPES registry since June 22, 2006.
## Identity
- **NPI:** 1811933047 (Entity type: Individual)
- **Enumerated:** June 22, 2006
- **Primary specialty:** Radiology - Radiation Oncology · taxonomy 2085R0001X
- **State license:** ME138036 (Florida)
- **Sole proprietor:** No
## Practice location
- **Address:** 4416 SUN N LAKE BLVD, Sebring, FL 33872-2164
- **Phone:** (863) 382-2049 · **Fax:** (863) 382-2830
## 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:** 8 organizations under Medicare reassignment (form CMS-855R): Florida Radiology Imaging At Lake Mary, LLC (NPI 1003208620, Orlando, FL); Florida Hospital Medical Group Inc (NPI 1073785044, Orlando, FL); Mercy Medical Group, Inc. (NPI 1316213143, Springfield, MA); Southcoast Physicians Group, Inc. (NPI 1336137629, Fairhaven, MA); Saint Vincent Physician Services, Inc. (NPI 1013997329, Worcester, MA); and 3 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Georgetown University School Of Medicine, class of 1988
## Record status
- **NPPES last updated:** February 12, 2026
- **Other identifiers:** Medicaid 44485361 (CO); Medicaid 129764600 (FL)
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Source: [NPI Profile](https://npiprofile.com/npi/1811933047) · Data from the CMS NPPES public registry.