Quick answers
- Does Richard S. Siegel accept Medicare assignment?
- Yes. Medicare's clinician data says Richard S. Siegel 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 Richard S. Siegel see?
- In 2024, CMS data shows 778 Original Medicare patients and 170,327 services for Richard S. Siegel. This counts Original Medicare only and measures volume, not quality.
- What is Richard S. Siegel's NPI number?
- 1730176322. 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 Richard S. Siegel, 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 | 778 |
|---|---|
| Services billed to Medicare | 170,327 |
| Different services or procedures | 140 |
| Participating Medicare provider | Yes |
| Average age of these patients | 77 |
Most frequent services
- Injection, fosaprepitant, 1 mg (J1453)12,150 services
- Injection, pembrolizumab, 1 mg (J9271)11,500 services
- Injection, darbepoetin alfa, 1 microgram (non-esrd use) (J0881)11,045 services
- Injection, paclitaxel, 1 mg (J9267)6,048 services
- Injection, aprepitant, 1 mg (J0185)3,120 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%
- Arthritis54%
- Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)51%
- Ischemic heart disease36%
- Diabetes26%
Hospitals where Richard S. Siegel works
Medicare's Facility Affiliation Data lists Richard S. Siegel 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
- Northwestern Medicine Central Dupage HospitalWinfield, IL · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 140242
- Northwestern Medicine McHenryMcHenry, IL · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 140116
Practice locations
Addresses where Richard S. Siegel is enrolled with Medicare (CMS data updated October 2, 2026).
- 880 W Central Rd, Suite 8200Arlington Heights, IL 60005 (847) 259‑4482
Group practices
Medicare enrollment lists Richard S. Siegel as a member of this group (CMS data updated October 2, 2026).
- Illinois Cancer Specialists26 clinicians in the group
Specialties
- Hematology/Oncologyprimary
- Internal Medicinealso
Other hematologist-oncologists in Arlington Heights
Clinicians with the same Medicare primary specialty in Arlington Heights, IL — not a recommendation.
Other clinicians in Illinois Cancer Specialists
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Michigan Medical School |
| Graduation year | 1993 (33 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1730176322 |
| 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