Quick answers
- Does Keith A. Lopatka accept Medicare assignment?
- Yes. Medicare's clinician data says Keith A. Lopatka 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 Keith A. Lopatka see?
- In 2024, CMS data shows 1,041 Original Medicare patients and 6,912 services for Keith A. Lopatka. This counts Original Medicare only and measures volume, not quality.
- What is Keith A. Lopatka's NPI number?
- 1770509648. 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 Keith A. Lopatka, 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 | 1,041 |
|---|---|
| Services billed to Medicare | 6,912 |
| Different services or procedures | 90 |
| Participating Medicare provider | Yes |
| Average age of these patients | 76 |
Most frequent services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)817 services
- Destruction of precancer skin growth, 2-14 growths (17003)696 services
- Ultrasonic guidance for placement of radiation therapy fields (G6001)548 services
- Superficial and/or low voltage radiation treatment delivery (77401)504 services
- Obtaining data needed to develop the optimal radiation treatment, 1 treatment area (77280)459 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 pressure74%
- Arthritis47%
- Ischemic heart disease31%
- Chronic kidney disease27%
- Diabetes24%
Practice locations
Addresses where Keith A. Lopatka is enrolled with Medicare (CMS data updated October 2, 2026).
- 11824 Southwest Hwy, Suite 210Palos Heights, IL 60463 (708) 671‑1374
- 1550 N Northwest Hwy, Suite 300Park Ridge, IL 60068 (847) 298‑1831
Group practices
Medicare enrollment lists Keith A. Lopatka as a member of this group (CMS data updated October 2, 2026).
- Illinois Dermatology Institute, LLC57 clinicians in the group
Specialties
Find other Micrographic Dermatologic Surgery (MDS) doctors in Illinois →
Other dermatologic surgeons in Illinois
Clinicians with the same Medicare primary specialty in Illinois — not a recommendation.
Other clinicians in Illinois Dermatology Institute, LLC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Loyola University Of Chicago, Stritch School Of Medicine |
| Graduation year | 2000 (26 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1770509648 |
| 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