Charles Chiang, M.D
Dermatology Physician · Fremont, CA
Charles Chiang, M.D is a dermatology physician with a practice address in Fremont, California, and NPI 1780889519, issued on Jun 20, 2007. Check the license (California A104751, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Charles Chiang
- Credential
- M.D
- Primary taxonomy
- Dermatology Physician 207N00000X
- License number
- A104751 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1860 Mowry Ave Ste 304, Fremont, CA 94538
- Phone
- (510) 456-2390
- Enumerated
- Jun 20, 2007
- Record last updated
- Nov 26, 2024
- Fax
- (510) 456-2380
- Medicare enrollment
- Enrolled (PECOS I20130628000753); accepts Medicare assignment
- Medical or professional school
- University Of California, San Diego School Of Medicine, 2007
- Entity
- Type 1 · individual
8 nearest dermatology physician records → All 2,083 in California → Look up another NPI →
Verify Charles Chiang in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A104751Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
37% fewer Medicare Part D claims than the average dermatology physician in 2024
503 Medicare Part D claims for 157 beneficiaries, against an average of 797 among the 12,802 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims.
Most prescribed
- Mometasone Furoate77 claims
- Hydrocortisone48 claims
- Clobetasol Propionate45 claims
- Mupirocin39 claims
- Triamcinolone Acetonide33 claims
- Ketoconazole29 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.
Industry payments in 2024: $2,394.60
131 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.
Bills Medicare through one group practice
- Berman Skin Institute Medical Group IncFremont, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Charles Chiang among 2,083 dermatology physician records in California
Charles Chiang, 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 2007, is newer than 44% of them.
- NPI issued2007 · 44% of these records are older, 45% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 70% of these records are
- Graduated2007 · median 2006 among the 1,450 with a school on file
- Record last updated2024 · 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 Fremont → Dermatology Physician nationwide →
The 8 dermatology physician records with the nearest ZIP codes
- Jeffrey Carmel, MDFremont, CA 945381235109893
- Sunil Dhawan, MDFremont, CA 945381326018987
- Stephanie Friduss, MDFremont, CA 945381215012976
- David Gorsulowsky, MDFremont, CA 945381649272832
- Tatiana Grzeszkiewicz, M.D., PH.D.Fremont, CA 945381841386489
- Ellen Haddock, MDFremont, CA 945381851823454
- Matthew Kanzler, MDFremont, CA 945381629032271
- Peter Lu, MDFremont, CA 945381275005209
Common questions
What is Charles Chiang, M.D's NPI number?
Charles Chiang, M.D's National Provider Identifier (NPI) is 1780889519, issued on Jun 20, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Charles Chiang, M.D located?
The NPPES record lists a practice address at 1860 Mowry Ave Ste 304, Fremont, CA, 94538. Phone: (510) 456-2390. Providers update this record themselves, so call before visiting.
How can I verify Charles Chiang, M.D's license?
NPPES lists California license number A104751, 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 Chiang, M.D prescribe under Medicare Part D?
In 2024, Charles Chiang, M.D had 503 Medicare Part D claims for 157 beneficiaries; the average among dermatology physician prescribers was 797. Part D covers Medicare prescriptions only.
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.