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Internal Medicine

Audrey A. Sernyak, MD

Works at hospitals in Newark, DE · Elkton, MD · Delaware, Maryland

Summary

Dr. Audrey A. Sernyak, MD is an internal medicine doctor at 106 Bow St, Elkton, MD 21921. Phone: (410) 398-4000. Accepts Medicare assignment. In 2024, Audrey A. Sernyak had 837 Original Medicare patients and 1,311 services. NPI 1922096494. Source: CMS National Downloadable File, updated October 2, 2026; CMS Facility Affiliation Data, updated October 2, 2026; CMS Medicare Physician & Other Practitioners, data year 2024.

  • Specialty: Internal medicine doctor (Medicare lists Internal Medicine)
  • Address: 106 Bow St, Elkton, MD 21921 · Directions (1 more location)
  • Phone: (410) 398‑4000
  • Medicare: Accepts Medicare assignment
  • Hospitals: Christiana Hospital, Union Hospital of Cecil County
  • Group practice: Christiana Care Health Services Inc (+1 more)
  • Medical school: Virginia Commonwealth University, School Of Medicine · graduated 1995 (31 years since medical school)
  • Gender (as listed): Female

From official Medicare data

This page shows what Medicare's official clinician data says about Audrey A. Sernyak, 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 Audrey A. Sernyak accept Medicare assignment?
Yes. Medicare's clinician data says Audrey A. Sernyak 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.
How many Medicare patients does Audrey A. Sernyak see?
In 2024, CMS data shows 837 Original Medicare patients and 1,311 services for Audrey A. Sernyak. This counts Original Medicare only and measures volume, not quality.
What is Audrey A. Sernyak's NPI number?
1922096494. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Medicare activity in 2024

Official CMS public-use data for Audrey A. Sernyak, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.

Original Medicare patients837
Services billed to Medicare1,311
Different services or procedures27
Participating Medicare providerYes
Average age of these patients76

Most frequent services

  1. Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only (93010)478 services
  2. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)205 services
  3. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)154 services
  4. Ultrasound of heart with color-depicted blood flow, rate, direction and valve function (93306)85 services
  5. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)82 services

Chronic conditions among these patients

Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).

  • High blood pressure75%
  • High cholesterol75%
  • Ischemic heart disease58%
  • Arthritis53%
  • Heart failure47%
  • Diabetes45%

Hospitals where Audrey A. Sernyak works

Medicare's Facility Affiliation Data lists Audrey A. Sernyak 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.

  • Christiana HospitalNewark, DE · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 080001
  • Union Hospital of Cecil CountyElkton, MD · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: not listed by Medicare · CCN 210032

Practice locations

Addresses where Audrey A. Sernyak is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Audrey A. Sernyak as a member of these groups (CMS data updated October 2, 2026).

  • Christiana Care Health Services Inc1,483 clinicians in the group
  • Union Hospital of Cecil County288 clinicians in the group

Specialties

Find other Internal Medicine doctors in Maryland →

Other internal medicine doctors in Elkton

Clinicians with the same Medicare primary specialty in Elkton, MD — not a recommendation.

All internal medicine doctors in Elkton →

Other clinicians in Christiana Care Health Services Inc

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

Clinician information

CredentialMD
Medical schoolVirginia Commonwealth University, School Of Medicine
Graduation year1995 (31 years since medical school)
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1922096494
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. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
  5. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  6. Medicare Care Compare — official Medicare tool to look up clinicians