Quick answers
- Does Christopher S. Lillie accept Medicare assignment?
- Yes. Medicare's clinician data says Christopher S. Lillie 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 Christopher S. Lillie see?
- In 2024, CMS data shows 486 Original Medicare patients and 3,681 services for Christopher S. Lillie. This counts Original Medicare only and measures volume, not quality.
- What is Christopher S. Lillie's NPI number?
- 1023419884. 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 Christopher S. Lillie, 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 | 486 |
|---|---|
| Services billed to Medicare | 3,681 |
| Different services or procedures | 58 |
| Participating Medicare provider | Yes |
| Average age of these patients | 74 |
Most frequent services
- Destruction of precancer skin growth, 2-14 growths (17003)691 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)393 services
- Injection, triamcinolone acetonide, not otherwise specified, 10 mg (J3301)209 services
- Destruction of precancer skin growth, 1 growth (17000)206 services
- Destruction of skin growth, 1-14 growths (17110)186 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 pressure67%
- Arthritis42%
- Ischemic heart disease22%
- Diabetes20%
- Chronic kidney disease20%
Hospitals where Christopher S. Lillie works
Medicare's Facility Affiliation Data lists Christopher S. Lillie 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.
- Riverside Medical CenterKankakee, IL · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 140186
Practice locations
Addresses where Christopher S. Lillie is enrolled with Medicare (CMS data updated October 2, 2026).
- 1124 Essington Rd, Suite AJoliet, IL 60435 (815) 744‑8554
- 2323 Naperville Rd, Suite 120Naperville, IL 60563 (630) 462‑8680
- 4550 Southwest HwyOak Lawn, IL 60453 (708) 231‑1445
Group practices
Medicare enrollment lists Christopher S. Lillie as a member of this group (CMS data updated October 2, 2026).
- Pinnacle Dermatology SC148 clinicians in the group
Specialties
- Physician Assistantprimary
Other physician assistants in Joliet
Clinicians with the same Medicare primary specialty in Joliet, IL — not a recommendation.
Other clinicians in Pinnacle Dermatology SC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Graduation year | 2014 |
|---|---|
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1023419884 |
| 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