Karl David Bassler, M.D.
Dermatology Physician · Laguna Hills, CA
Karl David Bassler, M.D. is a dermatology physician with a practice address in Laguna Hills, California, and NPI 1215938949, issued on Aug 3, 2005. Check the license (California A64015, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Karl David Bassler
- Credential
- M.D.
- Primary taxonomy
- Dermatology Physician 207N00000X
- License number
- A64015 CA
Self-reported in NPPES; status is on the state search - Practice location
- 23961 Magdalena, Laguna Hills, CA 92653
- Phone
- (949) 855-3376
- Enumerated
- Aug 3, 2005
- Record last updated
- Mar 7, 2023
- Fax
- (949) 609-1971
- Medicare enrollment
- Enrolled (PECOS I20040204001055); accepts Medicare assignment
- Medical or professional school
- University Of California, Davis School Of Medicine, 1996
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest dermatology physician records → All 2,083 in California → Look up another NPI →
Also registered at 23961 Magdalena
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Michelle Algarin, M.D.Dermatology Physician1609872126
Verify Karl David Bassler in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A64015Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
11% fewer Medicare Part D claims than the average dermatology physician in 2024
711 Medicare Part D claims for 269 beneficiaries, against an average of 797 among the 12,802 providers of this specialty who prescribed in Part D. Brand-name drugs were 6% of claims.
Most prescribed
- Ketoconazole135 claims
- Clobetasol Propionate84 claims
- Triamcinolone Acetonide74 claims
- Mupirocin37 claims
- Imiquimod35 claims
- Valacyclovir33 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
No measured MIPS final score for 2023
CMS assigned the neutral MIPS final score of 75 without scoring Quality, Cost, Promoting Interoperability or Improvement Activities. It is an administrative threshold, so PlainDoctor does not compare it with measured clinicians.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $503.35
17 payments; by number, the most common kind was food and beverage; the largest payer was Leo Pharma Inc. The 10,250 providers of this specialty with any payment received $8,544.61 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Karl David Bassler among 2,083 dermatology physician records in California
Karl David Bassler, M.D. is one of 2,083 dermatology physician records with a practice address in California. 83% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 94% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 70% of these records are
- Graduated1996 · median 2006 among the 1,450 with a school on file
- Record last updated2023 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207N00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Dermatology Physician providers in California
There are 2,083 dermatology physician records in California.
All 2,083 in California → Every provider in Laguna Hills → Dermatology Physician nationwide →
The 8 dermatology physician records with the nearest ZIP codes
- Michelle Algarin, M.D.Laguna Hills, CA 926531609872126
- Jennifer ChannualLaguna Hills, CA 926531689986374
- Rollin Green, MDLaguna Hills, CA 926531245206705
- Edward Jeffes, M.D.Laguna Hills, CA 926531154438554
- Katherine Lee, M.D., M.A.Laguna Hills, CA 926531265693691
- Daniel McKenzie, MDLaguna Hills, CA 926531841259066
- Judith Romero, MDLaguna Hills, CA 926531710073697
- Cameron TrodelloLaguna Hills, CA 926531144717901
Common questions
What is Karl David Bassler, M.D.'s NPI number?
Karl David Bassler, M.D.'s National Provider Identifier (NPI) is 1215938949, issued on Aug 3, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Karl David Bassler, M.D. located?
The NPPES record lists a practice address at 23961 Magdalena, Laguna Hills, CA, 92653. Phone: (949) 855-3376. Providers update this record themselves, so call before visiting.
How can I verify Karl David Bassler, M.D.'s license?
NPPES lists California license number A64015, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Karl David Bassler, M.D. prescribe under Medicare Part D?
In 2024, Karl David Bassler, M.D. had 711 Medicare Part D claims for 269 beneficiaries; the average among dermatology physician prescribers was 797. Part D covers Medicare prescriptions only.
What is Karl David Bassler, M.D.'s MIPS final score?
CMS assigned the neutral MIPS final score of 75 for 2023 without scoring any category, so it is not a measured result.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.