Quick answers
- Which hospitals does Maryellen Johnson work at?
- Medicare's official clinician data lists Maryellen Johnson at 1 hospital: Greeneville Community Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Maryellen Johnson see patients?
- Medicare's clinician data lists 3 practice locations, including Greeneville, TN, Morristown, TN and Jefferson City, TN. Call before your visit to confirm the address.
- What is Maryellen Johnson's specialty?
- Medicare lists Nurse Practitioner as the primary specialty.
- Does Maryellen Johnson accept Medicare assignment?
- Yes. Medicare's clinician data says Maryellen 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.
- What is the phone number for Maryellen Johnson?
- (423) 922-9224, as listed in official Medicare / NPI Registry data.
- What is Maryellen Johnson's NPI number?
- 1710860432. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Maryellen Johnson works
Medicare's Facility Affiliation Data lists Maryellen Johnson at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Greeneville Community HospitalGreeneville, TN · Acute Care Hospital · CCN 440050
Practice locations
Addresses where Maryellen Johnson is enrolled with Medicare (CMS data updated 2026-10-02).
- 3225 E Andrew Johnson HwyGreeneville, TN 37745 (423) 922‑9224
- 420 W Morris Blvd, Suite 400hMorristown, TN 37813 (423) 586‑4545
- 657 E Broadway Blvd, Suite AJefferson City, TN 37760 (865) 475‑9062
Group practices
Medicare enrollment lists Maryellen Johnson as a member of this group (CMS data updated 2026-10-02).
- Healthstar Physicians PC88 clinicians in the group
Specialties
- Nurse Practitionerprimary
Other nurse practitioners in Greeneville
Clinicians with the same Medicare primary specialty in Greeneville, TN — not a recommendation.
Clinician information
| Graduation year | 2025 |
|---|---|
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1710860432 |
| 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