Doctor profile · Federal record

Dr. Karl Bassler, M.D.

Dermatology Physician (CMS: Dermatology) · Dermatopathology Physician · Procedural Dermatology Physician · Laguna Hills, CA

  • NPI 1215938949
  • Accepts Medicare
  • MIPS 75.0 / 100 · 2023
  • 30 yrs in practice
  • Male
  • Group practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
23961 Magdalena, #520
Laguna Hills, CA 92653
(949) 855-3376
fax (949) 609-1971

Credentials & registration

NPPES · NUCC
NPI registered
August 2005 — 21 yrs on file
Profile last updated
March 7, 2023
Year of graduation
1996 — 30 yrs since
Specialty taxonomy
207N00000X — NUCC code
State license (1)
California #A64015

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1215938949. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
5,771
Distinct HCPCS
10
Medicare allowed
$355,053
HCPCS Description Services Patients Avg allowed
17003 Destruction of precancer skin growth, 2-14 growths 2,113 272 $8
99213 Established patient office or other outpatient visit, 20-29 minutes 830 440 $98
88305 Pathology examination of tissue using a microscope, intermediate complexity 700 330 $40
17000 Destruction of precancer skin growth, 1 growth 499 332 $48
11102 Biopsy of related skin growth, first growth 453 315 $95
17110 Destruction of skin growth, 1-14 growths 369 277 $127
17004 Destruction of precancer skin growth, 15 or more growths 294 149 $191
11103 Biopsy of related skin growth, each additional growth 183 108 $57
99203 New patient office or other outpatient visit, 30-44 minutes 87 87 $122
99214 Established patient office or other outpatient visit, 30-39 minutes 77 69 $139

In context: peer comparison

Among 4 peers in this city , average services per provider: 207. This provider delivers 28× the peer median.

Open Payments

Industry payments received

CMS Open Payments
All-time total
$503
Transactions
17
Manufacturers
9
Payer (manufacturer) Industry Txns Amount
LEO Pharma Inc. 5 $111.27
Janssen Biotech, Inc. 2 $98.50
Galderma Laboratories, L.P. 1 $83.85
SUN PHARMACEUTICAL INDUSTRIES INC. 3 $61.87
Amgen Inc. 2 $43.48
UCB, Inc. 1 $38.99
ABBVIE INC. 1 $31.83
Arcutis Biotherapeutics, Inc. 1 $17.47
Incyte Corporation 1 $16.09

By nature of payment

Food and Beverage
$431
Education
$72

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
529
Patients
307
Total drug cost
$115,552
Drug Type Claims Patients Total cost
Ketoconazole Generic 120 65 $3,096
Clobetasol Propionate Generic 60 32 $4,653
Triamcinolone Acetonide Generic 50 41 $258
Mupirocin Generic 46 34 $385
Valacyclovir (Valacyclovir Hcl) Brand 41 18 $1,095
Hydrocortisone Generic 32 28 $169
Metronidazole Generic 32 18 $1,905
Minocycline Hcl Generic 32 25 $328
Fluorouracil Generic 24 21 $2,295
Fluocinonide Generic 22 12 $766

Frequently asked questions

Auto-generated from federal data
What is Dr. Karl Bassler's medical specialty?
Dr. Karl Bassler practices Dermatology Physician in Laguna Hills, CA.
Where does Dr. Karl Bassler practice?
Dr. Karl Bassler practices at 23961 Magdalena, Laguna Hills, CA 92653. Office phone: 9498553376.
What is Dr. Karl Bassler's NPI?
Dr. Karl Bassler's National Provider Identifier (NPI) is 1215938949, issued by NPPES.
Does Dr. Karl Bassler accept Medicare assignment?
Yes. Dr. Karl Bassler accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Karl Bassler commonly perform?
Top Medicare-reported procedures in 2023: Destruction of precancer skin growth, 2-14 growths (HCPCS 17003); Established patient office or other outpatient visit (HCPCS 99213); Pathology examination of tissue using a microscope, intermediate complexity (HCPCS 88305). Source: CMS Medicare Physician & Other Practitioners file.