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Gastroenterology

Steven M. Zeddun, MD

Works at hospitals in Washington, DC · District of Columbia

Summary

Dr. Steven M. Zeddun, MD is a gastroenterologist at 2021 K Nwst, Suite 500, Washington, DC 20006. Phone: (240) 737-0085. Accepts Medicare assignment. In 2024, Steven M. Zeddun had 350 Original Medicare patients and 15,414 services. NPI 1952578700. 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: 2021 K Nwst, Suite 500, Washington, DC 20006 · Directions (1 more location)
  • Phone: (240) 737‑0085
  • Medicare: Accepts Medicare assignment
  • Hospital: Sibley Memorial Hospital
  • Group practice: Capital Digestive Care LLC
  • Medical school: University Of Wisconsin School Of Medicine · graduated 2002 (24 years since medical school)
  • Gender (as listed): Male
  • Telehealth: offered

From official Medicare data

This page shows what Medicare's official clinician data says about Steven M. Zeddun, 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 Steven M. Zeddun accept Medicare assignment?
Yes. Medicare's clinician data says Steven M. Zeddun 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 Steven M. Zeddun see?
In 2024, CMS data shows 350 Original Medicare patients and 15,414 services for Steven M. Zeddun. This counts Original Medicare only and measures volume, not quality.
What is Steven M. Zeddun's NPI number?
1952578700. 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 Steven M. Zeddun, 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 patients350
Services billed to Medicare15,414
Different services or procedures47
Participating Medicare providerYes
Average age of these patients76

Most frequent services

  1. Injection, vedolizumab, intravenous, 1 mg (J3380)8,700 services
  2. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)139 services
  3. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)122 services
  4. Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43239)95 services
  5. Removal of polyps or growths of large bowel using an endoscope with mechanical snare (45385)60 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 cholesterol75%
  • High blood pressure65%
  • Arthritis52%
  • Ischemic heart disease25%
  • Diabetes23%
  • Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)22%

Hospitals where Steven M. Zeddun works

Medicare's Facility Affiliation Data lists Steven M. Zeddun 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 Steven M. Zeddun is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Steven M. Zeddun as a member of this group (CMS data updated October 2, 2026).

  • Capital Digestive Care LLC241 clinicians in the group

Specialties

Find other Gastroenterology doctors in District of Columbia →

Other gastroenterologists in Washington

Clinicians with the same Medicare primary specialty in Washington, DC — not a recommendation.

All gastroenterologists in Washington →

Other clinicians in Capital Digestive Care LLC

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

Clinician information

CredentialMD
Medical schoolUniversity Of Wisconsin School Of Medicine
Graduation year2002 (24 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
TelehealthOffers telehealth services
NPI (National Provider Identifier)1952578700
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