Quick answers
- Does Katherine Lottermoser accept Medicare assignment?
- Yes. Medicare's clinician data says Katherine Lottermoser 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 Katherine Lottermoser see?
- In 2024, CMS data shows 545 Original Medicare patients and 2,189 services for Katherine Lottermoser. This counts Original Medicare only and measures volume, not quality.
- What is Katherine Lottermoser's NPI number?
- 1609461078. 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 Katherine Lottermoser, 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 | 545 |
|---|---|
| Services billed to Medicare | 2,189 |
| Different services or procedures | 33 |
| Participating Medicare provider | Yes |
| Average age of these patients | 74 |
Most frequent services
- Destruction of precancer skin growth, 2-14 growths (17003)717 services
- Destruction of precancer skin growth, 1 growth (17000)253 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)246 services
- Biopsy of related skin growth, first growth (11102)209 services
- Destruction of skin growth, 1-14 growths (17110)168 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 pressure62%
- Arthritis44%
- Anxiety24%
- Ischemic heart disease21%
- Diabetes19%
Practice locations
Addresses where Katherine Lottermoser is enrolled with Medicare (CMS data updated October 2, 2026). The first 5 of 6; the Medicare profile lists all.
- 1531 S Grove Ave, Unit 101Barrington, IL 60010 (847) 381‑8899
- 230 Commons DrGeneva, IL 60134 (847) 381‑8899
- 353 Bank Dr, Suite 400McHenry, IL 60050 (847) 381‑8899
- 525 E Congress Pkwy, Suite 200Crystal Lake, IL 60014 (847) 381‑8899
- 85 W Algonquin Rd, Suite 220Arlington Heights, IL 60005 (847) 381‑8899
Group practices
Medicare enrollment lists Katherine Lottermoser as a member of this group (CMS data updated October 2, 2026).
- Derick Dermatology PLLC65 clinicians in the group
Specialties
- Physician Assistantprimary
Other physician assistants in Barrington
Clinicians with the same Medicare primary specialty in Barrington, IL — not a recommendation.
Other clinicians in Derick Dermatology PLLC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| School | Des Moines University Of Osteopathic Medicine And Health Sciences |
|---|---|
| Graduation year | 2022 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1609461078 |
| 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