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Gastroenterology

Mark Wilkinson, MD

Works at hospitals in Lewes, DE · Delaware

Summary

Dr. Mark Wilkinson, MD is a gastroenterologist at 33663 Bayview Medical Dr, Unit 2, Lewes, DE 19958. Phone: (302) 645-9325. Accepts Medicare assignment. In 2024, Mark Wilkinson had 867 Original Medicare patients and 1,532 services. NPI 1326235623. 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: Gastroenterologist (Medicare lists Gastroenterology)
  • Address: 33663 Bayview Medical Dr, Unit 2, Lewes, DE 19958 · Directions (1 more location)
  • Phone: (302) 645‑9325
  • Medicare: Accepts Medicare assignment
  • Hospital: Beebe Medical Center
  • Group practice: Beebe Physician Network Inc.
  • Medical school: graduated 2003 (23 years since medical school)
  • Gender (as listed): Male

From official Medicare data

This page shows what Medicare's official clinician data says about Mark Wilkinson, 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 Mark Wilkinson accept Medicare assignment?
Yes. Medicare's clinician data says Mark Wilkinson 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 Mark Wilkinson see?
In 2024, CMS data shows 867 Original Medicare patients and 1,532 services for Mark Wilkinson. This counts Original Medicare only and measures volume, not quality.
What is Mark Wilkinson's NPI number?
1326235623. 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 Mark Wilkinson, 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 patients867
Services billed to Medicare1,532
Different services or procedures54
Participating Medicare providerYes
Average age of these patients74

Most frequent services

  1. Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43239)233 services
  2. Initial hospital care with straightforward or low level of medical decision making, per day, if using time, at least 40 minutes (99221)230 services
  3. Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)191 services
  4. Biopsy of large bowel using a flexible endoscope (45380)114 services
  5. Removal of polyps or growths of large bowel using an endoscope with mechanical snare (45385)109 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%
  • Arthritis50%
  • Ischemic heart disease49%
  • Diabetes35%
  • Chronic kidney disease33%

Hospitals where Mark Wilkinson works

Medicare's Facility Affiliation Data lists Mark Wilkinson 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.

  • Beebe Medical CenterLewes, DE · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 080007

Practice locations

Addresses where Mark Wilkinson is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Mark Wilkinson as a member of this group (CMS data updated October 2, 2026).

  • Beebe Physician Network Inc.310 clinicians in the group

Specialties

Find other Gastroenterology doctors in Delaware →

Other gastroenterologists in Lewes

Clinicians with the same Medicare primary specialty in Lewes, DE — not a recommendation.

All gastroenterologists in Lewes →

Other clinicians in Beebe Physician Network Inc.

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

Clinician information

CredentialMD
Graduation year2003 (23 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1326235623
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