Quick answers
- Does Billy L. Sullivan Ii accept Medicare assignment?
- Yes. Medicare's clinician data says Billy L. Sullivan Ii accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Billy L. Sullivan Ii see?
- In 2024, CMS data shows 28 Original Medicare patients and 113 services for Billy L. Sullivan Ii. This counts Original Medicare only and measures volume, not quality.
- What is Billy L. Sullivan Ii's NPI number?
- 1548720493. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Billy L. Sullivan Ii, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 28 |
|---|---|
| Services billed to Medicare | 113 |
| Different services or procedures | 22 |
| Participating Medicare provider | Yes |
| Average age of these patients | 75 |
Most frequent services
- Insertion of cage or mesh device to spine bone and disc space during spine fusion (22853)20 services
- Partial removal of spine bone with release of spinal cord and/or nerves, each additional segment (63048)15 services
- Fusion of lower spine bone through abdomen with partial removal of disc (22558)11 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High blood pressure75%
- High cholesterol75%
- Arthritis75%
- Ischemic heart disease43%
- Anxiety43%
- Depression39%
Hospitals where Billy L. Sullivan Ii works
Medicare's Facility Affiliation Data lists Billy L. Sullivan Ii at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- Baptist Memorial Hospital Union CountyNew Albany, MS · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 250006
- Baptist Memorial Hospital-Oktibbeha CountyStarkville, MS · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 250050
- Magnolia Regional Health CenterCorinth, MS · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 250009
- North Mississippi Medical CenterTupelo, MS · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 250004
- Tippah County HospitalRipley, MS · Critical Access Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 251337
Practice locations
Addresses where Billy L. Sullivan Ii is enrolled with Medicare (CMS data updated October 2, 2026).
- 100 Baptist Memorial Cir, Suite 330Oxford, MS 38655 (662) 767‑4200
- 1211 S Gloster St, Suite ATupelo, MS 38801 (662) 767‑4200
Group practices
Medicare enrollment lists Billy L. Sullivan Ii as a member of this group (CMS data updated October 2, 2026).
- Specialty Orthopedic Group of Mississippi PLLC41 clinicians in the group
Specialties
- Orthopedic Surgeryprimary
Other orthopedic surgeons in Oxford
Clinicians with the same Medicare primary specialty in Oxford, MS — not a recommendation.
Other clinicians in Specialty Orthopedic Group of Mississippi PLLC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Mississippi School Of Medicine |
| Graduation year | 2019 (7 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1548720493 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians