Quick answers
- Where does David S. Leonard see patients?
- Medicare's clinician data lists 5 practice locations, including Saint Louis, MO and St Louis, MO. Call before your visit to confirm the address.
- What is David S. Leonard's specialty?
- Medicare lists Otolaryngology as the primary specialty.
- Does David S. Leonard accept Medicare assignment?
- Yes. Medicare's clinician data says David S. Leonard 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 David S. Leonard?
- (314) 454-6162, as listed in official Medicare / NPI Registry data.
- What is David S. Leonard's NPI number?
- 1740444041. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Practice locations
Addresses where David S. Leonard is enrolled with Medicare (CMS data updated 2026-10-02).
- 1 Childrens PlSaint Louis, MO 63110 (314) 454‑6162
- 1 Childrens Pl, Fl 3Saint Louis, MO 63110 (314) 454‑6162
- 660 S Euclid AveSaint Louis, MO 63110
- 660 S Euclid Ave Box, 8115 Dept of OtolaryngologySaint Louis, MO 63110 (314) 362‑7509
- 660 S Euclid Campus Box, 8115 Dept of OtolaryngologySt Louis, MO 63110
Group practices
Medicare enrollment lists David S. Leonard as a member of this group (CMS data updated 2026-10-02).
- Washington University3,029 clinicians in the group
Specialties
- Otolaryngologyprimary
Other ENT doctors in Saint Louis
Clinicians with the same Medicare primary specialty in Saint Louis, MO — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2000 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1740444041 |
| 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
- 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