Medical emergency?Emergency? Call 911. Nearest emergency roomsNearest ERs

Internal Medicine

Marylena R. Mizerak, MD

Works at hospitals in Hershey, PA · Enola, PA · Camp Hill, PA … · Pennsylvania

Summary

Dr. Marylena R. Mizerak, MD is an internal medicine doctor at 1540 Alexandra Ln, Harrisburg, PA 17110. Phone: (717) 798-3363. Accepts Medicare assignment. NPI 1326614116. Source: CMS National Downloadable File, updated October 2, 2026; CMS Facility Affiliation Data, updated October 2, 2026.

From official Medicare data

This page shows what Medicare's official clinician data says about Marylena R. Mizerak, joined by NPI number (data updated October 2, 2026). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

Quick answers

Does Marylena R. Mizerak accept Medicare assignment?
Yes. Medicare's clinician data says Marylena R. Mizerak accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
What is Marylena R. Mizerak's NPI number?
1326614116. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Hospitals where Marylena R. Mizerak works

Medicare's Facility Affiliation Data lists Marylena R. Mizerak at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.

Practice locations

Addresses where Marylena R. Mizerak is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Marylena R. Mizerak as a member of this group (CMS data updated October 2, 2026).

  • Penn State Health Medical Group LLC734 clinicians in the group

Specialties

Find other Internal Medicine doctors in Pennsylvania →

Other internal medicine doctors in Harrisburg

Clinicians with the same Medicare primary specialty in Harrisburg, PA — not a recommendation.

All internal medicine doctors in Harrisburg →

Other clinicians in Penn State Health Medical Group LLC

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

Clinician information

CredentialMD
Medical schoolPennsylvania State University College Of Medicine
Graduation year2021 (5 years since medical school)
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1326614116
CorrectionsReport 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

  1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
  2. Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
  3. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
  4. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  5. Medicare Care Compare — official Medicare tool to look up clinicians