Quick answers
- Which hospitals does John J. Okeefe Iii work at?
- Medicare's official clinician data lists John J. Okeefe Iii at 1 hospital: Mercy Hospital South. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does John J. Okeefe Iii see patients?
- Medicare's clinician data lists 1 practice location in Saint Louis, MO. Call before your visit to confirm the address.
- What is John J. Okeefe Iii's specialty?
- Medicare lists Neurology as the primary specialty.
- Does John J. Okeefe Iii accept Medicare assignment?
- Yes. Medicare's clinician data says John J. Okeefe Iii 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 John J. Okeefe Iii?
- (314) 849-5665, as listed in official Medicare / NPI Registry data.
- What is John J. Okeefe Iii's NPI number?
- 1891790788. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where John J. Okeefe Iii works
Medicare's Facility Affiliation Data lists John J. Okeefe Iii at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Mercy Hospital SouthSaint Louis, MO · Acute Care Hospital · CCN 260077
Practice locations
Addresses where John J. Okeefe Iii is enrolled with Medicare (CMS data updated 2026-10-02).
- 12818 Tesson Ferry Rd, Suite 201Saint Louis, MO 63128 (314) 849‑5665
Specialties
- Neurologyprimary
Other neurologists in Saint Louis
Clinicians with the same Medicare primary specialty in Saint Louis, MO — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | State University Of Ny Upstate Medical University |
| Graduation year | 1975 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1891790788 |
| 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