Quick answers
- Which hospitals does Mary E. Karis work at?
- Medicare's official clinician data lists Mary E. Karis at 2 hospitals: Milton S Hershey Medical Center and Penn State Health St. Joseph. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Mary E. Karis see patients?
- Medicare's clinician data lists 1 practice location in Hershey, PA. Call before your visit to confirm the address.
- What is Mary E. Karis's specialty?
- Medicare lists Nurse Practitioner as the primary specialty.
- Does Mary E. Karis accept Medicare assignment?
- Yes. Medicare's clinician data says Mary E. Karis 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 Mary E. Karis offer telehealth?
- Medicare's clinician data says Mary E. Karis offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Mary E. Karis?
- (717) 533-4141, as listed in official Medicare / NPI Registry data.
- What is Mary E. Karis's NPI number?
- 1790448355. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Mary E. Karis works
Medicare's Facility Affiliation Data lists Mary E. Karis at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Milton S Hershey Medical CenterHershey, PA · Acute Care Hospital · CCN 390256
- Penn State Health St. JosephReading, PA · Acute Care Hospital · CCN 390096
Practice locations
Addresses where Mary E. Karis is enrolled with Medicare (CMS data updated 2026-10-02).
- 1120 Cocoa AveHershey, PA 17033 (717) 533‑4141
Group practices
Medicare enrollment lists Mary E. Karis as a member of this group (CMS data updated 2026-10-02).
- Penn State Health Medical Group LLC734 clinicians in the group
Specialties
- Nurse Practitionerprimary
Other nurse practitioners in Hershey
Clinicians with the same Medicare primary specialty in Hershey, PA — not a recommendation.
Clinician information
| Credential | NP |
|---|---|
| Graduation year | 2021 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1790448355 |
| 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