Quick answers
- Does Karl D. Bassler accept Medicare assignment?
- Yes. Medicare's clinician data says Karl D. Bassler 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 Karl D. Bassler see?
- In 2024, CMS data shows 653 Original Medicare patients and 6,656 services for Karl D. Bassler. This counts Original Medicare only and measures volume, not quality.
- What is Karl D. Bassler's NPI number?
- 1215938949. 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 Karl D. Bassler, 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 | 653 |
|---|---|
| Services billed to Medicare | 6,656 |
| Different services or procedures | 53 |
| Participating Medicare provider | Yes |
| Average age of these patients | 77 |
Most frequent services
- Destruction of precancer skin growth, 2-14 growths (17003)2,294 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)932 services
- Pathology examination of tissue using a microscope, intermediate complexity (88305)774 services
- Destruction of precancer skin growth, 1 growth (17000)555 services
- Biopsy of related skin growth, first growth (11102)524 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 pressure70%
- Arthritis47%
- Ischemic heart disease24%
- Chronic kidney disease24%
- Anxiety22%
Practice locations
Addresses where Karl D. Bassler is enrolled with Medicare (CMS data updated October 2, 2026).
- 23961 Calle De La Magdalena, Suite 520Laguna Hills, CA 92653 (949) 855‑3376
Specialties
- Dermatologyprimary
Other dermatologists in Laguna Hills
Clinicians with the same Medicare primary specialty in Laguna Hills, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of California, Davis School Of Medicine |
| Graduation year | 1996 (30 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1215938949 |
| 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