Quick answers
- Which hospitals does William J. Sullivan work at?
- Medicare's official clinician data lists William J. Sullivan at 4 hospitals: Freeman Health System - Freeman West, Girard Medical Center, Mercy Hospital Joplin and Mercy Hospital Pittsburg, Inc. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does William J. Sullivan see patients?
- Medicare's clinician data lists 1 practice location in Frontenac, KS. Call before your visit to confirm the address.
- What is William J. Sullivan's specialty?
- Medicare lists Internal Medicine as the primary specialty.
- Does William J. Sullivan accept Medicare assignment?
- Yes. Medicare's clinician data says William J. Sullivan accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- Does William J. Sullivan offer telehealth?
- Medicare's clinician data says William J. Sullivan offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for William J. Sullivan?
- (620) 231-8849, as listed in official Medicare / NPI Registry data.
- What is William J. Sullivan's NPI number?
- 1093805897. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where William J. Sullivan works
Medicare's Facility Affiliation Data lists William J. Sullivan at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Freeman Health System - Freeman WestJoplin, MO · Acute Care Hospital · CCN 260137
- Girard Medical CenterGirard, KS · Critical Access Hospital · CCN 171376
- Mercy Hospital JoplinJoplin, MO · Acute Care Hospital · CCN 260001
- Mercy Hospital Pittsburg, IncPittsburg, KS · Acute Care Hospital · CCN 170006
Practice locations
Addresses where William J. Sullivan is enrolled with Medicare (CMS data updated 2026-10-02).
- 608 Willard StFrontenac, KS 66763 (620) 231‑8849
Group practices
Medicare enrollment lists William J. Sullivan as a member of this group (CMS data updated 2026-10-02).
- Freeman-Oak Hill Health System394 clinicians in the group
Specialties
- Internal Medicineprimary
Other internal medicine doctors in Kansas
Clinicians with the same Medicare primary specialty in Kansas — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Kansas City University Of Med & Biosciences, College Of Osteo Med |
| Graduation year | 1990 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1093805897 |
| 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 2026-10-02, retrieved 2026-10-29
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- 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