Quick answers
- Does Estephan N. Zayat accept Medicare assignment?
- Yes. Medicare's clinician data says Estephan N. Zayat 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 Estephan N. Zayat see?
- In 2024, CMS data shows 720 Original Medicare patients and 13,747 services for Estephan N. Zayat. This counts Original Medicare only and measures volume, not quality.
- What is Estephan N. Zayat's NPI number?
- 1558361261. 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 Estephan N. Zayat, 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 patients | 720 |
|---|---|
| Services billed to Medicare | 13,747 |
| Different services or procedures | 75 |
| Participating Medicare provider | Yes |
| Average age of these patients | 72 |
Most frequent services
- Injection, vedolizumab, intravenous, 1 mg (J3380)8,400 services
- Injection, infliximab, excludes biosimilar, 10 mg (J1745)1,200 services
- Pathology examination of tissue using a microscope, intermediate complexity (88305)880 services
- Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43239)289 services
- Removal of polyps or growths of large bowel using an endoscope with mechanical snare (45385)181 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 pressure73%
- Arthritis47%
- Ischemic heart disease30%
- Diabetes28%
- Depression28%
Hospitals where Estephan N. Zayat works
Medicare's Facility Affiliation Data lists Estephan N. Zayat 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.
- Ascension Via Christi Hospitals Wichita, Inc.Wichita, KS · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 170122
- Kansas Medical Center LLCAndover, KS · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 170197
- Susan B Allen Memorial HospitalEl Dorado, KS · Acute Care Hospital · Emergency services: listed by Medicare · CCN 170017
- Wesley Medical CenterWichita, KS · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 170123
- William Newton HospitalWinfield, KS · Critical Access Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 171383
Practice locations
Addresses where Estephan N. Zayat is enrolled with Medicare (CMS data updated October 2, 2026).
- 3121 N Webb RdWichita, KS 67226 (316) 928‑8930
Group practices
Medicare enrollment lists Estephan N. Zayat as a member of this group (CMS data updated October 2, 2026).
- Kansas Gastroenterology LLC20 clinicians in the group
Specialties
- Gastroenterologyprimary
- Internal Medicinealso
Other gastroenterologists in Wichita
Clinicians with the same Medicare primary specialty in Wichita, KS — not a recommendation.
Other clinicians in Kansas Gastroenterology LLC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1991 (35 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1558361261 |
| 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 October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- 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