NPPES file of Aug 9, 2026

Tinyee Tsai Chang, MD

Dermatology Physician · Redding, CA

Tinyee Tsai Chang, MD is a dermatology physician with a practice address in Redding, California, and NPI 1386861409, issued on Apr 19, 2007. Check the license (California A88191, 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
1386861409
Name
Tinyee Tsai Chang
Credential
MD
Primary taxonomy
Dermatology Physician 207N00000X
License number
A88191 CA
Self-reported in NPPES; status is on the state search
Practice location
375 Smile Place Suite B, Redding, CA 96001
Phone
(530) 221-3376
Enumerated
Apr 19, 2007
Record last updated
May 30, 2019 (not updated in 7 years: call before relying on the address or phone)
Fax
(530) 221-3378
Medicaid IDs
RHM53955F CA
GR0089250 CA
Medicare enrollment
Enrolled (PECOS I20050315000579); accepts Medicare assignment
Medical or professional school
Tufts University School Of Medicine, 2002
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Verify Tinyee Tsai 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 A88191
    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

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3.7 times the Medicare Part D claims of the average dermatology physician in 2024

2,944 Medicare Part D claims for 1,028 beneficiaries, against an average of 797 among the 12,802 providers of this specialty who prescribed in Part D. Brand-name drugs were 19% of claims.

  1. Tinyee Chang2,944
  2. Specialty average797

Most prescribed

  1. Triamcinolone Acetonide556 claims
  2. Doxycycline Hyclate190 claims
  3. Clobetasol Propionate186 claims
  4. Fluorouracil160 claims
  5. Dupixent Pen147 claims
  6. Dupixent Syringe107 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 MIPS final score for 2023 (Medicare payment program): 100 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 score100.0
  2. Costnot scored (reweighted)
  3. Promoting interoperabilitynot scored (reweighted)
  4. Improvement activities40 of 40 points · 15%100.0

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

Industry payments in 2024: $2,855.37

162 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie 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.

  1. Tinyee Chang$2,855.37
  2. Specialty average$8,544.61

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

Tinyee Tsai Chang among 2,083 dermatology physician records in California

Tinyee Tsai Chang, MD 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
  • Graduated2002 · median 2006 among the 1,450 with a school on file
  • Record last updated2019 · 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.

The 8 dermatology physician records with the nearest ZIP codes

  1. Aseel Abu-NasserRedding, CA 960011609641711
  2. Richard Gerlic, MDRedding, CA 960011265434021
  3. Brian Reber, P.A.Redding, CA 960011952338907
  4. Ronald Reece, MDRedding, CA 960011144288523
  5. Jane Shiu, MDRedding, CA 960011073542148
  6. Elizabeth Stratte, M.D.Redding, CA 960011568538254
  7. Byron Van Dyke, M.D.Redding, CA 960011821084443
  8. Foy Cox, M.D.Yuba City, CA 959911184611048

Common questions

What is Tinyee Tsai Chang, MD's NPI number?

Tinyee Tsai Chang, MD's National Provider Identifier (NPI) is 1386861409, issued on Apr 19, 2007. An NPI identifies a provider in billing; it is not a license.

Where is Tinyee Tsai Chang, MD located?

The NPPES record lists a practice address at 375 Smile Place Suite B, Redding, CA, 96001. Phone: (530) 221-3376. Providers update this record themselves, so call before visiting.

How can I verify Tinyee Tsai Chang, MD's license?

NPPES lists California license number A88191, 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 Tinyee Tsai Chang, MD prescribe under Medicare Part D?

In 2024, Tinyee Tsai Chang, MD had 2,944 Medicare Part D claims for 1,028 beneficiaries; the average among dermatology physician prescribers was 797. Part D covers Medicare prescriptions only.

What is Tinyee Tsai Chang, MD's MIPS final score?

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

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.