Quick answers
- Which hospitals does Melissa D. Johnson work at?
- Medicare's official clinician data lists Melissa D. Johnson at 4 hospitals: Mercy Hospital Jefferson, Mercy Hospital South, Mercy Hospital St Louis and SSM St Clare Health Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Melissa D. Johnson see patients?
- Medicare's clinician data lists 1 practice location in Fenton, MO. Call before your visit to confirm the address.
- What is Melissa D. Johnson's specialty?
- Medicare lists Family Practice as the primary specialty.
- Does Melissa D. Johnson accept Medicare assignment?
- Yes. Medicare's clinician data says Melissa D. Johnson 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 D. Johnson offer telehealth?
- Medicare's clinician data says Melissa D. Johnson offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Melissa D. Johnson?
- (636) 660-9850, as listed in official Medicare / NPI Registry data.
- What is Melissa D. Johnson's NPI number?
- 1548284896. 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 D. Johnson works
Medicare's Facility Affiliation Data lists Melissa D. Johnson at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Mercy Hospital JeffersonCrystal City, MO · Acute Care Hospital · CCN 260023
- Mercy Hospital SouthSaint Louis, MO · Acute Care Hospital · CCN 260077
- Mercy Hospital St LouisSaint Louis, MO · Acute Care Hospital · CCN 260020
- SSM St Clare Health CenterFenton, MO · Acute Care Hospital · CCN 260081
Practice locations
Addresses where Melissa D. Johnson is enrolled with Medicare (CMS data updated 2026-10-02).
- 714 Gravois Rd, Suite 210Fenton, MO 63026 (636) 660‑9850
Group practices
Medicare enrollment lists Melissa D. Johnson as a member of this group (CMS data updated 2026-10-02).
- American Multispecialty Group Inc116 clinicians in the group
Specialties
- Family Practiceprimary
Other family doctors in Fenton
Clinicians with the same Medicare primary specialty in Fenton, MO — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Medical school | University Of Missouri, Kansas City, School Of Medicine |
| Graduation year | 2001 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1548284896 |
| 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