Quick answers
- Does Sherif Y. Isshak Ibrahim accept Medicare assignment?
- Yes. Medicare's clinician data says Sherif Y. Isshak Ibrahim 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 Sherif Y. Isshak Ibrahim see?
- In 2024, CMS data shows 390 Original Medicare patients and 10,844 services for Sherif Y. Isshak Ibrahim. This counts Original Medicare only and measures volume, not quality.
- What is Sherif Y. Isshak Ibrahim's NPI number?
- 1699897579. 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 Sherif Y. Isshak Ibrahim, 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 | 390 |
|---|---|
| Services billed to Medicare | 10,844 |
| Different services or procedures | 68 |
| Participating Medicare provider | Yes |
| Average age of these patients | 74 |
Most frequent services
- Dialysis services, per day, less than full month service (20 years or older) (90970)1,133 services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)774 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)372 services
- Uric acid level, blood (84550)272 services
- Insertion of needle into vein for collection of blood sample (36415)269 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%
- Chronic kidney disease75%
- Diabetes61%
- Heart failure56%
- Ischemic heart disease50%
Hospitals where Sherif Y. Isshak Ibrahim works
Medicare's Facility Affiliation Data lists Sherif Y. Isshak Ibrahim 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.
- AdventHealth Heart of FloridaDavenport, FL · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 100137
- AdventHealth Lake WalesLake Wales, FL · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 100099
- AdventHealth OrlandoOrlando, FL · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 100007
- Bartow Regional Medical CenterBartow, FL · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 100121
- Winter Haven HospitalWinter Haven, FL · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 100052
Practice locations
Addresses where Sherif Y. Isshak Ibrahim is enrolled with Medicare (CMS data updated October 2, 2026).
- 325 1st St NWinter Haven, FL 33881 (863) 293‑1191
Group practices
Medicare enrollment lists Sherif Y. Isshak Ibrahim as a member of this group (CMS data updated October 2, 2026).
- AdventHealth Bond Clinic, Inc.86 clinicians in the group
Specialties
- Nephrologyprimary
Other nephrologists in Winter Haven
Clinicians with the same Medicare primary specialty in Winter Haven, FL — not a recommendation.
Other clinicians in AdventHealth Bond Clinic, Inc.
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1994 (32 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) | 1699897579 |
| 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