Quick answers
- Does Karen Landy accept Medicare assignment?
- Yes. Medicare's clinician data says Karen Landy 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 Karen Landy see?
- In 2024, CMS data shows 202 Original Medicare patients and 1,409 services for Karen Landy. This counts Original Medicare only and measures volume, not quality.
- What is Karen Landy's NPI number?
- 1912100785. 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 Karen Landy, 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 | 202 |
|---|---|
| Services billed to Medicare | 1,409 |
| Different services or procedures | 58 |
| Participating Medicare provider | Yes |
| Average age of these patients | 73 |
Most frequent services
- Destruction of precancer skin growth, 2-14 growths (17003)476 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)177 services
- Destruction of precancer skin growth, 1 growth (17000)142 services
- Destruction of skin growth, 1-14 growths (17110)109 services
- Biopsy of related skin growth, first growth (11102)66 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 cholesterol72%
- High blood pressure69%
- Arthritis52%
- Diabetes28%
- Anxiety25%
- Ischemic heart disease24%
Practice locations
Addresses where Karen Landy is enrolled with Medicare (CMS data updated October 2, 2026).
- 135 Macaw Ln, Suite 200Simi Valley, CA 93065 (805) 522‑3300
- 3959 Laurel Canyon Blvd, Suite FStudio City, CA 91604 (818) 505‑9300
Group practices
Medicare enrollment lists Karen Landy as a member of this group (CMS data updated October 2, 2026).
- Golden State Dermatology Associates, Inc.125 clinicians in the group
Specialties
- Nurse Practitionerprimary
Other nurse practitioners in Simi Valley
Clinicians with the same Medicare primary specialty in Simi Valley, CA — not a recommendation.
Other clinicians in Golden State Dermatology Associates, Inc.
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | NP |
|---|---|
| Graduation year | 2007 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1912100785 |
| 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