Quick answers
- Does Nina H. Merel accept Medicare assignment?
- Yes. Medicare's clinician data says Nina H. Merel 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 Nina H. Merel see?
- In 2024, CMS data shows 409 Original Medicare patients and 2,946 services for Nina H. Merel. This counts Original Medicare only and measures volume, not quality.
- What is Nina H. Merel's NPI number?
- 1285616300. 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 Nina H. Merel, 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 | 409 |
|---|---|
| Services billed to Medicare | 2,946 |
| Different services or procedures | 22 |
| 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)166 services
- New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)116 services
- Removal of polyps or growths of large bowel using an endoscope with mechanical snare (45385)107 services
- Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43239)90 services
- Biopsy of large bowel using a flexible endoscope (45380)61 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 pressure56%
- Arthritis51%
- Osteoporosis27%
- Anxiety24%
- Ischemic heart disease19%
Hospitals where Nina H. Merel works
Medicare's Facility Affiliation Data lists Nina H. Merel 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.
- Advocate Lutheran General HospitalPark Ridge, IL · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 140223
- Northshore University Healthsystem - Evanston HospitalEvanston, IL · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 140010
- Northwestern Lake Forest HospitalLake Forest, IL · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 140130
Practice locations
Addresses where Nina H. Merel is enrolled with Medicare (CMS data updated October 2, 2026).
- 1415 S Arlington Heights RdArlington Heights, IL 60005
- 2501 Compass Rd, Suite 130Glenview, IL 60026 (847) 677‑1170
- 745 Fletcher Dr, Suite 202Elgin, IL 60123 (847) 888‑1300
Group practices
Medicare enrollment lists Nina H. Merel as a member of this group (CMS data updated October 2, 2026).
- Illinois Gastroenterology Group LLC115 clinicians in the group
Specialties
- Gastroenterologyprimary
Other gastroenterologists in Arlington Heights
Clinicians with the same Medicare primary specialty in Arlington Heights, IL — not a recommendation.
Other clinicians in Illinois Gastroenterology Group LLC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Rush Medical College Of Rush University |
| Graduation year | 1997 (29 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1285616300 |
| 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