Karl Bassler, M.D.
NPI 1215938949 · Dermatology Physician · Laguna Hills, CA
Enrolled with Medicare as Practitioner - Dermatology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Karl Bassler, M.D. is a Dermatology Physician provider in Laguna Hills, CA (NPI 1215938949).
Provider details
- NPI number
- 1215938949
- Entity type
- Individual
- Primary specialty
- Dermatology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- A64015 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
20 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
6,452 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Destruction of Precancer Skin Growth, 2-14 Growths17003 | 2,294 | $8 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 932 | $98 |
| Pathology Examination of Tissue Using a Microscope, Intermediate Complexity88305 | 774 | $39 |
| Destruction of Precancer Skin Growth, 1 Growth17000 | 555 | $48 |
| Biopsy of Related Skin Growth, First Growth11102 | 524 | $91 |
| Destruction of Skin Growth, 1-14 Growths17110 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 16 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Ketoconazole | 135 | 78 |
| Clobetasol Propionate | 84 | 38 |
| Triamcinolone Acetonide | 74 | 52 |
| Mupirocin | 37 | 28 |
| Imiquimod | 35 | 19 |
| Valacyclovir Hclbrand: Valacyclovir | 33 | 20 |
| Fluorouracil | 32 | 30 |
| Metronidazole | 30 | 21 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$503 across 17 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-08-03
- Last updated
- 2023-03-07
Frequently asked questions
- What is Karl Bassler's NPI number?
- Karl Bassler's National Provider Identifier (NPI) is 1215938949, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Karl Bassler's specialty?
- Karl Bassler is listed in the NPPES registry with a primary specialty of Dermatology Physician (Allopathic & Osteopathic Physicians).
- Where is Karl Bassler located?
- Karl Bassler's practice location on file with NPPES is 23961 Magdalena, Laguna Hills, CA 92653.
- What is Karl Bassler's phone number?
- The practice phone number listed in the NPPES registry for Karl Bassler is (949) 855-3376.
- Does Karl Bassler accept Medicare?
- Karl Bassler is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Karl Bassler's NPI active?
- Yes — Karl Bassler's NPI (1215938949) is active in the NPPES registry as of the last update on 2023-03-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.