Quick answers
- Which hospitals does Melissa N. Weis work at?
- Medicare's official clinician data lists Melissa N. Weis at 5 hospitals: AdventHealth Deland, AdventHealth Gordon, Anmed Health, Havasu Regional Medical Center and HSHS St Elizabeth's Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Melissa N. Weis see patients?
- Medicare's clinician data lists 2 practice locations, including Saint Louis, MO and O Fallon, IL. Call before your visit to confirm the address.
- What is Melissa N. Weis's specialty?
- Medicare lists Pulmonary Disease as the primary specialty, and also Internal Medicine.
- Does Melissa N. Weis accept Medicare assignment?
- Yes. Medicare's clinician data says Melissa N. Weis 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.
- Does Melissa N. Weis offer telehealth?
- Medicare's clinician data says Melissa N. Weis offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Melissa N. Weis?
- (314) 514-6060, as listed in official Medicare / NPI Registry data.
- What is Melissa N. Weis's NPI number?
- 1821242462. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Melissa N. Weis works
Medicare's Facility Affiliation Data lists Melissa N. Weis at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- AdventHealth DelandDeland, FL · Acute Care Hospital · CCN 100045
- AdventHealth GordonCalhoun, GA · Acute Care Hospital · CCN 110023
- Anmed HealthAnderson, SC · Acute Care Hospital · CCN 420027
- Havasu Regional Medical CenterLake Havasu City, AZ · Acute Care Hospital · CCN 030069
- HSHS St Elizabeth's HospitalO Fallon, IL · Acute Care Hospital · CCN 140187
Practice locations
Addresses where Melissa N. Weis is enrolled with Medicare (CMS data updated 2026-10-02).
- 1 Cityplace Dr, Suite 570Saint Louis, MO 63141 (314) 514‑6060
- 1 Saint Elizabeth BlvdO Fallon, IL 62269 (618) 234‑2120
Group practices
Medicare enrollment lists Melissa N. Weis as a member of these groups (CMS data updated 2026-10-02).
- Cep America Illinois Intensivists48 clinicians in the group
- Critical Care Services PC33 clinicians in the group
Specialties
- Pulmonary Diseaseprimary
- Internal Medicinealso
Other pulmonologists in Saint Louis
Clinicians with the same Medicare primary specialty in Saint Louis, MO — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2008 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1821242462 |
| 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