Quick answers
- Which hospitals does Dayton E. Dmello work at?
- Medicare's official clinician data lists Dayton E. Dmello at 3 hospitals: Mercy Hospital South, Mercy Hospital St Louis and Mercy Hospital Washington. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Dayton E. Dmello see patients?
- Medicare's clinician data lists 2 practice locations, including Chesterfield, MO and Saint Louis, MO. Call before your visit to confirm the address.
- What is Dayton E. Dmello's specialty?
- Medicare lists Critical Care (Intensivists) as the primary specialty, and also Internal Medicine.
- Does Dayton E. Dmello accept Medicare assignment?
- Yes. Medicare's clinician data says Dayton E. Dmello 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 Dayton E. Dmello?
- (314) 881-4000, as listed in official Medicare / NPI Registry data.
- What is Dayton E. Dmello's NPI number?
- 1699723890. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Dayton E. Dmello works
Medicare's Facility Affiliation Data lists Dayton E. Dmello 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
- Mercy Hospital St LouisSaint Louis, MO · Acute Care Hospital · CCN 260020
- Mercy Hospital WashingtonWashington, MO · Acute Care Hospital · CCN 260052
Practice locations
Addresses where Dayton E. Dmello is enrolled with Medicare (CMS data updated 2026-10-02).
- 14561 N Outer 40 RdChesterfield, MO 63017 (314) 881‑4000
- 615 S New Ballas RdSaint Louis, MO 63141 (314) 251‑6486
Group practices
Medicare enrollment lists Dayton E. Dmello as a member of these groups (CMS data updated 2026-10-02).
- Mercy Clinic Adult Critical Care LLC60 clinicians in the group
- Mercy Clinic Pulmonology - St. Louis, LLC24 clinicians in the group
Specialties
Find other Critical Care (Intensivists) doctors in Missouri →
Other critical care doctors in Chesterfield
Clinicians with the same Medicare primary specialty in Chesterfield, MO — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1993 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1699723890 |
| 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