Quick answers
- Which hospitals does Melanie Ondrejko work at?
- Medicare's official clinician data lists Melanie Ondrejko at 2 hospitals: Frederick Health Hospital and Northwest Hospital Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Melanie Ondrejko see patients?
- Medicare's clinician data lists 2 practice locations, including Frederick, MD and Randallstown, MD. Call before your visit to confirm the address.
- What is Melanie Ondrejko's specialty?
- Medicare lists Nurse Practitioner as the primary specialty.
- Does Melanie Ondrejko accept Medicare assignment?
- Yes. Medicare's clinician data says Melanie Ondrejko 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 Melanie Ondrejko?
- (240) 566-3300, as listed in official Medicare / NPI Registry data.
- What is Melanie Ondrejko's NPI number?
- 1992265656. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Melanie Ondrejko works
Medicare's Facility Affiliation Data lists Melanie Ondrejko at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Frederick Health HospitalFrederick, MD · Acute Care Hospital · CCN 210005
- Northwest Hospital CenterRandallstown, MD · Acute Care Hospital · CCN 210040
Practice locations
Addresses where Melanie Ondrejko is enrolled with Medicare (CMS data updated 2026-10-02).
- 400 W 7th St, Frederick Health HospitalFrederick, MD 21701 (240) 566‑3300
- 5401 Old Court RdRandallstown, MD 21133 (410) 521‑2200
Group practices
Medicare enrollment lists Melanie Ondrejko as a member of these groups (CMS data updated 2026-10-02).
- Lifebridge Community Physicians Inc183 clinicians in the group
- Hospitalist Medicine Physicians of Maryland-Laurel PC19 clinicians in the group
Specialties
- Nurse Practitionerprimary
Other nurse practitioners in Frederick
Clinicians with the same Medicare primary specialty in Frederick, MD — not a recommendation.
Clinician information
| Credential | NP |
|---|---|
| Graduation year | 2018 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1992265656 |
| 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