Quick answers
- Does Allen J. Rosenbaum accept Medicare assignment?
- Yes. Medicare's clinician data says Allen J. Rosenbaum 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 Allen J. Rosenbaum see?
- In 2024, CMS data shows 92 Original Medicare patients and 3,886 services for Allen J. Rosenbaum. This counts Original Medicare only and measures volume, not quality.
- What is Allen J. Rosenbaum's NPI number?
- 1508862368. 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 Allen J. Rosenbaum, 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 | 92 |
|---|---|
| Services billed to Medicare | 3,886 |
| Different services or procedures | 21 |
| Participating Medicare provider | Yes |
| Average age of these patients | 73 |
Most frequent services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)57 services
- New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)37 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 cholesterol74%
- High blood pressure70%
- Arthritis51%
- Anxiety32%
- Diabetes30%
- Ischemic heart disease29%
Practice locations
Addresses where Allen J. Rosenbaum is enrolled with Medicare (CMS data updated October 2, 2026).
- 900 Rand Rd, Suite 120Des Plaines, IL 60016 (312) 767‑3244
- 950 N York Rd, Suite 101Hinsdale, IL 60521 (312) 767‑3244
Group practices
Medicare enrollment lists Allen J. Rosenbaum as a member of this group (CMS data updated October 2, 2026).
- Midwest Digestive Health and Nutrition, PLLC25 clinicians in the group
Specialties
- Gastroenterologyprimary
- Internal Medicinealso
Other gastroenterologists in Des Plaines
Clinicians with the same Medicare primary specialty in Des Plaines, IL — not a recommendation.
Other clinicians in Midwest Digestive Health and Nutrition, PLLC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Illinois College Of Med (chi/peor/rock/chm-Urb) |
| Graduation year | 1979 (47 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) | 1508862368 |
| 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
- 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