Quick answers
- Which hospitals does Mark E. Halstead work at?
- Medicare's official clinician data lists Mark E. Halstead at 2 hospitals: Barnes Jewish Hospital and Progress West Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Mark E. Halstead see patients?
- Medicare's clinician data lists 2 practice locations, including O Fallon, MO and Saint Louis, MO. Call before your visit to confirm the address.
- What is Mark E. Halstead's specialty?
- Medicare lists Sports Medicine as the primary specialty, and also Orthopedic Surgery.
- Does Mark E. Halstead accept Medicare assignment?
- Yes. Medicare's clinician data says Mark E. Halstead 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 E. Halstead?
- (314) 514-3500, as listed in official Medicare / NPI Registry data.
- What is Mark E. Halstead's NPI number?
- 1598783227. 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 E. Halstead works
Medicare's Facility Affiliation Data lists Mark E. Halstead at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Barnes Jewish HospitalSaint Louis, MO · Acute Care Hospital · CCN 260032
- Progress West HospitalOfallon, MO · Acute Care Hospital · CCN 260219
Practice locations
Addresses where Mark E. Halstead is enrolled with Medicare (CMS data updated 2026-10-02).
- 20 Progress Point Pkwy, Suite 114O Fallon, MO 63368 (314) 514‑3500
- 4921 Parkview PlSaint Louis, MO 63110 (314) 514‑3500
Group practices
Medicare enrollment lists Mark E. Halstead as a member of this group (CMS data updated 2026-10-02).
- Washington University3,029 clinicians in the group
Specialties
- Sports Medicineprimary
- Orthopedic Surgeryalso
Other sports medicine doctors in Missouri
Clinicians with the same Medicare primary specialty in Missouri — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Wisconsin School Of Medicine |
| Graduation year | 1998 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1598783227 |
| 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