Quick answers
- Does Michael D. Frumkin accept Medicare assignment?
- Yes. Medicare's clinician data says Michael D. Frumkin 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 Michael D. Frumkin see?
- In 2024, CMS data shows 592 Original Medicare patients and 816 services for Michael D. Frumkin. This counts Original Medicare only and measures volume, not quality.
- What is Michael D. Frumkin's NPI number?
- 1598785263. 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 Michael D. Frumkin, 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 | 592 |
|---|---|
| Services billed to Medicare | 816 |
| Different services or procedures | 33 |
| Participating Medicare provider | Yes |
| Average age of these patients | 77 |
Most frequent services
- Emergency department visit with high level of medical decision making (99285)380 services
- Electrocardiogram (ecg) 1 to 3 leads with review by physician only (93042)154 services
- Critical care, first 30-74 minutes (99291)111 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)60 services
- Emergency department visit with moderate level of medical decision making (99284)39 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%
- Arthritis58%
- Ischemic heart disease51%
- Diabetes44%
- Heart failure41%
Hospitals where Michael D. Frumkin works
Medicare's Facility Affiliation Data lists Michael D. Frumkin 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.
- Northwest Community Hospital 1Arlington Heights, IL · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 140252
- St Alexius Medical CenterHoffman Estates, IL · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 140290
Practice locations
Addresses where Michael D. Frumkin is enrolled with Medicare (CMS data updated October 2, 2026). The first 5 of 8; the Medicare profile lists all.
- 1450 Busch PkwyBuffalo Grove, IL 60089 (847) 725‑8640
- 1555 Barrington RdHoffman Estates, IL 60169 (847) 843‑2000
- 199 W Rand RdMount Prospect, IL 60056 (847) 618‑5400
- 21481 N Rand RdKildeer, IL 60047 (847) 618‑9696
- 21481 N Rand Rd, Fl 2Kildeer, IL 60047 (847) 866‑7846
Group practices
Medicare enrollment lists Michael D. Frumkin as a member of these groups (CMS data updated October 2, 2026).
- Endeavor Health Medical Group3,350 clinicians in the group
- Cepamerica Illinois LLP499 clinicians in the group
Specialties
- Emergency Medicineprimary
- Family Practicealso
Other emergency medicine doctors in Buffalo Grove
Clinicians with the same Medicare primary specialty in Buffalo Grove, IL — not a recommendation.
Other clinicians in Endeavor Health Medical Group
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Saint Louis University School Of Medicine |
| Graduation year | 1979 (47 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1598785263 |
| 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