Quick answers
- Does Ali S. Karakurum accept Medicare assignment?
- Yes. Medicare's clinician data says Ali S. Karakurum 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 Ali S. Karakurum see?
- In 2024, CMS data shows 496 Original Medicare patients and 1,134 services for Ali S. Karakurum. This counts Original Medicare only and measures volume, not quality.
- What is Ali S. Karakurum's NPI number?
- 1275570285. 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 Ali S. Karakurum, 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 | 496 |
|---|---|
| Services billed to Medicare | 1,134 |
| Different services or procedures | 27 |
| Participating Medicare provider | Yes |
| Average age of these patients | 73 |
Most frequent services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)423 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)227 services
- Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43239)149 services
- New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)83 services
- Removal of polyps or growths of large bowel using an endoscope with mechanical snare (45385)58 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%
- Arthritis59%
- Ischemic heart disease35%
- Diabetes31%
- Anxiety30%
Hospitals where Ali S. Karakurum works
Medicare's Facility Affiliation Data lists Ali S. Karakurum 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.
- John T Mather Memorial Hospital of Port JeffersonPort Jefferson, NY · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 330185
- St Charles HospitalPort Jefferson, NY · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 330246
Practice locations
Addresses where Ali S. Karakurum is enrolled with Medicare (CMS data updated October 2, 2026).
- 70 N Country Rd, Suite 201Port Jefferson, NY 11777 (631) 331‑0200
Group practices
Medicare enrollment lists Ali S. Karakurum as a member of this group (CMS data updated October 2, 2026).
- Advanced Gastroenterology and Endoscopy PC4 clinicians in the group
Specialties
- Gastroenterologyprimary
- Internal Medicinealso
Other gastroenterologists in Port Jefferson
Clinicians with the same Medicare primary specialty in Port Jefferson, NY — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1986 (40 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1275570285 |
| 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