Quick answers
- Which hospitals does Mark J. Van Ess work at?
- Medicare's official clinician data lists Mark J. Van Ess at 4 hospitals: Mercy Hospital Joplin, Mercy Hospital Lebanon, Mercy Hospital Northwest Arkansas and Mercy Hospital Springfield. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Mark J. Van Ess see patients?
- Medicare's clinician data lists 1 practice location in Joplin, MO. Call before your visit to confirm the address.
- What is Mark J. Van Ess's specialty?
- Medicare lists Otolaryngology as the primary specialty.
- Does Mark J. Van Ess accept Medicare assignment?
- Yes. Medicare's clinician data says Mark J. Van Ess 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.
- What is the phone number for Mark J. Van Ess?
- (417) 820-5750, as listed in official Medicare / NPI Registry data.
- What is Mark J. Van Ess's NPI number?
- 1841404613. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Mark J. Van Ess works
Medicare's Facility Affiliation Data lists Mark J. Van Ess at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Mercy Hospital JoplinJoplin, MO · Acute Care Hospital · CCN 260001
- Mercy Hospital LebanonLebanon, MO · Acute Care Hospital · CCN 260059
- Mercy Hospital Northwest ArkansasRogers, AR · Acute Care Hospital · CCN 040010
- Mercy Hospital SpringfieldSpringfield, MO · Acute Care Hospital · CCN 260065
Practice locations
Addresses where Mark J. Van Ess is enrolled with Medicare (CMS data updated 2026-10-02).
- 100 Mercy Way, 560 Sgfmc Ent Joplin Suite 560Joplin, MO 64804 (417) 820‑5750
Group practices
Medicare enrollment lists Mark J. Van Ess as a member of this group (CMS data updated 2026-10-02).
- Mercy Clinic Springfield Communities1,120 clinicians in the group
Specialties
- Otolaryngologyprimary
Other ENT doctors in Joplin
Clinicians with the same Medicare primary specialty in Joplin, MO — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Graduation year | 2003 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1841404613 |
| 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