Registry data as of Aug 27, 2026

Charles Linden, MD

Dermatology Physician · Tarzana, CA

Charles Linden, MD is a dermatology physician with a practice address in Tarzana, California, and NPI 1508861634, issued on Jun 15, 2005. Check the license (California G42744, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.

Record from CMS NPPES, loaded Aug 27, 2026 · Medicare files 2023 and 2024 · method · Verify with CMS →

NPPES recordas of Aug 27, 2026
1508861634
Name
Charles Linden
Credential
MD
Primary taxonomy
Dermatology Physician 207N00000X
License number
G42744 CA
Self-reported in NPPES; status is on the state search
Practice location
18364 Clark St, Tarzana, CA 91356
Phone
(818) 345-7122
Enumerated
Jun 15, 2005
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
Download card Updates feed

Also registered at 18364 Clark St

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Daniel Gross, MDDermatology Physician1396740056
  2. Ada Winkielman, MDDermatopathology Physician1992798870

Verify Charles Linden in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license G42744
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
Open the California license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

Statewide context: the Medical Board of California reported 374 disciplinary actions in FY 2022-23. California discipline data →

53% fewer Medicare Part D claims than the average dermatology physician in 2024

377 Medicare Part D claims for 186 beneficiaries, against an average of 799 among the 11,754 providers of this specialty who prescribed in Part D. Brand-name drugs were 5% of claims.

  1. Charles Linden377
  2. Specialty average799

Most prescribed

  1. Triamcinolone Acetonide69 claims
  2. Doxycycline Hyclate39 claims
  3. Valacyclovir34 claims
  4. Fluocinonide27 claims
  5. Ketoconazole23 claims
  6. Clobetasol Propionate21 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.

The Medicare quality score for 2023: 0 of 100

The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.

  1. Qualityout of 100 · 30% of the final score0.0
  2. Costout of 100 · 30%
  3. Promoting interoperabilityout of 100 · 25%
  4. Improvement activities0 of 40 points · 15%0.0

Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).

Industry payments in 2024: $33.84

1 payment, mostly food and beverage; the largest payer was Abbvie Inc.. The 9,431 providers of this specialty with any payment received $8,593.06 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Charles Linden$33.84
  2. Specialty average$8,593.06

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

2 hospital and facility affiliations

  1. Simi Dermatologic Medical Center, IncSimi Valley, CA
  2. Valley Dermatologic Medical Group IncTarzana, CA

Source: CMS Doctors and Clinicians affiliations; Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.

Dermatology Physician providers in California

There are 2,004 dermatology physician records in California.

Other dermatology physician records in California

  1. Sumaira Aasi, MDStanford, CA1780675181
  2. Christopher Abbott, M.D.San Diego, CA1578866885
  3. Eman Abdallah, D.O.Los Angeles, CA1528321957
  4. Farah Abdulla, MDDuarte, CA1093934390
  5. Sayyida Abdus-Salaam, M.D.Daly City, CA1114241296
  6. Robert Abergel, M.D.Santa Monica, CA1841565843
  7. Glynis Ablon, M.D.Manhattan Beach, CA1144292889
  8. Arthur Abrams, MDMountain View, CA1518093178
  9. Aseel Abu-NasserRedding, CA1609641711
  10. Faud Abuabara, M.D.Mountain View, CA1164472890

Common questions

What is Charles Linden, MD's NPI number?

Charles Linden, MD's National Provider Identifier (NPI) is 1508861634, issued on Jun 15, 2005. An NPI identifies a provider in billing; it is not a license.

Where is Charles Linden, MD located?

The NPPES record lists a practice address at 18364 Clark St, Tarzana, CA, 91356. Phone: (818) 345-7122. Providers update this record themselves, so call before visiting.

How can I verify Charles Linden, MD's license?

NPPES lists California license number G42744, 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 Charles Linden, MD prescribe under Medicare Part D?

In 2024, Charles Linden, MD had 377 Medicare Part D claims for 186 beneficiaries; the average among dermatology physician prescribers was 799. Part D covers Medicare prescriptions only.

What is Charles Linden, MD's Medicare quality score?

The 2023 MIPS final score is 0 of 100. The average among 454,083 clinicians with a measured score was 83.5.

Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 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.

Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.