NPPES file of Aug 9, 2026

Dong L. Chang, M.D., INC.

Dermatopathology Physician · Arcadia, CA

Dong L. Chang, M.D., INC. is a dermatopathology physician with a practice address in Arcadia, California, and NPI 1235136243, issued on Jul 5, 2005. Check the license (California A33186, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2023 and 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1235136243
Name
Dong L. Chang
Credential
M.D., INC.
Primary taxonomy
Dermatopathology Physician 207ND0900X
License number
A33186 CA
Self-reported in NPPES; status is on the state search
Practice location
100 N Santa Anita Ave, Arcadia, CA 91006
Phone
(626) 821-5998
Enumerated
Jul 5, 2005
Record last updated
Oct 6, 2023
Fax
(626) 821-5990
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.
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Also registered at 100 N Santa Anita Ave

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

  1. Carl Chang, M.D.Dermatology Physician1891983078
  2. Jeany Cheng, N.P.Hematology & Oncology Physician1205855772
  3. Jaylynna HuaPhysician Assistant1124973466
  4. Lilian Hwang, PA-CMedical Physician Assistant1619321858
  5. Dana Kang, MDSpecialist1982803813
  6. Alexis ThamPhysician Assistant1043979461

Verify Dong L. Chang in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A33186
    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.

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65% fewer Medicare Part D claims than the average dermatopathology physician in 2024

244 Medicare Part D claims for 70 beneficiaries, against an average of 693 among the 249 providers of this specialty who prescribed in Part D. Brand-name drugs were 18% of claims.

  1. Dong Chang244
  2. Specialty average693

Most prescribed

  1. Dupixent Pen26 claims
  2. Triamcinolone Acetonide20 claims
  3. Ketoconazole17 claims
  4. Clobetasol Propionate13 claims
  5. Amoxicillin-Clavulanate Potass11 claims
  6. Mupirocin11 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, group reporting; category weights for 2023 (qpp.cms.gov).

Industry payments in 2024: $55.77

2 payments; by number, the most common kind was food and beverage; the largest payer was United Therapeutics Corporation. The 233 providers of this specialty with any payment received $2,984.42 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Dong Chang$55.77
  2. Specialty average$2,984.42

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

Dong L. Chang among 64 dermatopathology physician records in California

Dong L. Chang, M.D., INC. is one of 64 dermatopathology physician records with a practice address in California. 80% 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, 83% newer
  • In a Medicare fileYes · 80% of these records are
  • In the CMS Doctors and Clinicians fileNo · 69% of these records are
  • Record last updated2023 · 59% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207ND0900X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Dermatopathology Physician providers in California

There are 64 dermatopathology physician records in California.

The 8 dermatopathology physician records with the nearest ZIP codes

  1. Christiane Querfeld, MD, PHDDuarte, CA 910101467772533
  2. John Honch, M.D.La Canada, CA 910111134121460
  3. Mandy Ramani, M.D.La Canada, CA 910111497750640
  4. Karen Sherwood, M.D.La Canada, CA 910111386646503
  5. James Esther, M.D.Pasadena, CA 911011932281888
  6. Marilyn Mehlmauer, MDPasadena, CA 911051831389964
  7. Mehran Nowfar-Rad, M.D.Pasadena, CA 911051912979048
  8. Ada Winkielman, MDTarzana, CA 913561992798870

Common questions

What is Dong L. Chang, M.D., INC.'s NPI number?

Dong L. Chang, M.D., INC.'s National Provider Identifier (NPI) is 1235136243, issued on Jul 5, 2005. An NPI identifies a provider in billing; it is not a license.

Where is Dong L. Chang, M.D., INC. located?

The NPPES record lists a practice address at 100 N Santa Anita Ave, Arcadia, CA, 91006. Phone: (626) 821-5998. Providers update this record themselves, so call before visiting.

How can I verify Dong L. Chang, M.D., INC.'s license?

NPPES lists California license number A33186, 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 Dong L. Chang, M.D., INC. prescribe under Medicare Part D?

In 2024, Dong L. Chang, M.D., INC. had 244 Medicare Part D claims for 70 beneficiaries; the average among dermatopathology physician prescribers was 693. Part D covers Medicare prescriptions only.

What is Dong L. Chang, M.D., INC.'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.