OpenMedicare
Start Here
Explore
Fraud
Investigations
Data
Tools
About

Footer

OpenMedicare

Independent Medicare data journalism

Sister Sites

  • OpenMedicaid
  • OpenFeds
  • OpenSpending

Explore

  • Providers
  • Procedures
  • States
  • Specialties
  • Search

Fraud Analysis

  • Still Out There (AI)
  • Fraud Overview
  • Fraud Watchlist
  • Deep Dive Profiles
  • Impossible Numbers
  • Report Fraud

Investigations

  • The Algorithm Knows
  • How We Built the Model
  • Internal Medicine Crisis
  • Florida & California Fraud
  • Million Dollar Flagged
  • All Investigations

Tools

  • Provider Lookup
  • Compare
  • Cost Calculator
  • Your Medicare Dollar
  • Downloads

About

  • About OpenMedicare
  • Methodology
  • Glossary
  • Data Sources
  • API Docs
  • Updates
Data Sources: Centers for Medicare & Medicaid Services (CMS), Medicare Provider Utilization and Payment Data
Disclaimer: This site is an independent journalism project. Data analysis and editorial content are not affiliated with or endorsed by CMS or any government agency. All spending figures are based on publicly available Medicare payment records.
Sister Sites: OpenMedicaid ยท OpenFeds ยท OpenSpending

ยฉ 2026 OpenMedicare. Independent data journalism. Built by TheDataProject.ai

Methodologyโ€ขDownload Data
  1. Home
  2. Providers
  3. Tinyee Chang
๐Ÿงด
MDIndividual

Tinyee Chang, MD

NPI: 1386861409
Redding, CA
10 years of data
Dermatology
$11.9M
Total Payments
97.5K
Beneficiaries
146.5K
Services
2.77x
Markup Ratio

Peer Comparison

99th
percentile in specialty
This provider$11.9M
Specialty median$212.7K

๐Ÿ“‹ Key Findings

1Billed $11.9M over 10 years
22.77x markup ratio (above median)
399th percentile in Dermatology by payments
459 services/day โ€” unusually high
5Payments surged 56% in 2015
62 procedures with >3x markup

This provider averages 59 services per working day

Based on 146.5K total services over 10 years (250 working days/year). Learn about impossible service volumes โ†’

๐Ÿ”Ž Data Analysis

This provider's $11.9M in total Medicare payments ranks in the 99th percentile of Dermatology providers nationally.

Averaging 59 services per working day raises questions about billing patterns.

Medicare payments to this provider grew 204% from 2014 to 2023.

AI-generated analysis based on Medicare payment data.

Annual Medicare Payments

Annual Services Provided

Avg Payment per Service

Markup Ratio Over Time

๐Ÿ“ˆ

Notable: Payments increased 56% in 2015

Year-over-year payment surges can indicate changes in practice volume, new services, or billing pattern shifts.

Submitted Charges vs. Medicare Payments

Average per-service amounts submitted by the provider compared to what Medicare actually paid โ€” the gap represents the markup.

YearAvg SubmittedAvg PaidMarkup RatioGap per ServiceTotal PaymentsServicesBeneficiaries
2014$289.10$104.822.76x$184.28$490.8K7.1K5.1K
2015$285.87$110.032.60x$175.84$764.9K10.6K7.7K
2016$284.46$105.772.69x$178.69$915.3K13.3K9.0K
2017$284.73$104.862.72x$179.87$930.8K13.9K9.4K
2018$290.65$108.012.69x$182.64$1.2M15.6K10.3K
2019$310.40$120.802.57x$189.60$1.8M17.6K11.0K
2020$309.74$121.052.56x$188.69$1.6M16.8K10.6K
2021$306.62$121.762.52x$184.86$1.4M16.3K11.5K
2022$303.41$112.912.69x$190.50$1.3M16.9K11.4K
2023$291.55$111.762.61x$179.79$1.5M18.3K11.6K

Top Procedures (20)

17004Destruction of 15 or more skin growths
$2.7M
22.4K services$122.64/svc2.89x markup
99213Established patient office or other outpatient visit, typically 15 minutes
$1.6M
29.5K services$53.88/svc2.71x markup
17110Destruction of up to 14 skin growths
$1.2M
14.0K services$89.01/svc2.64x markup
J7308Aminolevulinic acid hcl for topical administration, 20%, single unit dosage form (354 mg)
$1.1M
3.5K services$297.94/svc2.65x markup
99214Established patient office or other outpatient, visit typically 25 minutes
$751.1K
8.6K services$87.20/svc2.48x markup
17000Destruction of skin growthโš  4.5x markup
$573.7K
15.1K services$38.03/svc4.47x markup
17111Destruction of 15 or more skin growths
$376.8K
3.5K services$107.89/svc2.57x markup
96573Application of light and light-sensitive drugs to aid destruction of premalignant skin growths, per day
$295.1K
1.6K services$178.84/svc2.24x markup
99203New patient office or other outpatient visit, typically 30 minutesโš  3.0x markup
$291.1K
4.1K services$71.13/svc3.05x markup
96920Laser treatment (total area less than 250 sq centimeters) for inflammatory skin disease
$261.0K
1.9K services$135.01/svc2.77x markup
11603Removal of malignant growth (2.1 to 3.0 centimeters) of the trunk, arms, or legs
$232.9K
1.0K services$223.48/svc2.61x markup
11301Shaving of 0.6 centimeters to 1.0 centimeters skin growth of the trunk, arms, or legs
$231.9K
2.9K services$80.93/svc2.41x markup
11302Shaving of 1.1 to 2.0 centimeters skin growth of the trunk, arms, or legs
$222.8K
2.2K services$103.09/svc2.25x markup
96567Application of light to aid destruction of premalignant and/or malignant skin growths, each session
$202.7K
1.9K services$107.96/svc2.34x markup
99212Established patient office or other outpatient visit, typically 10 minutes
$188.9K
4.8K services$39.07/svc2.28x markup
96921Laser treatment (250 to 500 sq centimeters) for inflammatory skin disease
$165.3K
1.1K services$146.76/svc2.59x markup
11303Shaving of over 2.0 centimeters skin growth of the trunk, arms, or legs
$129.6K
1.1K services$118.16/svc2.31x markup
11311Shaving of 0.6 centimeters to 1.0 centimeters skin growth of face, ears, eyelids, nose, lips, or mouth
$115.3K
1.5K services$79.13/svc2.81x markup
11602Removal of malignant growth (1.1 to 2.0 centimeters) of the trunk, arms, or legs
$111.8K
627 services$178.26/svc2.89x markup
11604Removal of malignant growth (3.1 to 4 centimeters) of the trunk, arms, or legs
$105.3K
416 services$253.16/svc2.55x markup
Show detailed table โ–พ
CodeDescriptionServicesPaymentsAvg/ServiceMarkup
17004Destruction of 15 or more skin growths22.4K$2.7M$122.642.89x
99213Established patient office or other outpatient visit, typically 15 minutes29.5K$1.6M$53.882.71x
17110Destruction of up to 14 skin growths14.0K$1.2M$89.012.64x
J7308Aminolevulinic acid hcl for topical administration, 20%, single unit dosage form (354 mg)3.5K$1.1M$297.942.65x
99214Established patient office or other outpatient, visit typically 25 minutes8.6K$751.1K$87.202.48x
17000Destruction of skin growth15.1K$573.7K$38.034.47x
17111Destruction of 15 or more skin growths3.5K$376.8K$107.892.57x
96573Application of light and light-sensitive drugs to aid destruction of premalignant skin growths, per day1.6K$295.1K$178.842.24x
99203New patient office or other outpatient visit, typically 30 minutes4.1K$291.1K$71.133.05x
96920Laser treatment (total area less than 250 sq centimeters) for inflammatory skin disease1.9K$261.0K$135.012.77x
11603Removal of malignant growth (2.1 to 3.0 centimeters) of the trunk, arms, or legs1.0K$232.9K$223.482.61x
11301Shaving of 0.6 centimeters to 1.0 centimeters skin growth of the trunk, arms, or legs2.9K$231.9K$80.932.41x
11302Shaving of 1.1 to 2.0 centimeters skin growth of the trunk, arms, or legs2.2K$222.8K$103.092.25x
96567Application of light to aid destruction of premalignant and/or malignant skin growths, each session1.9K$202.7K$107.962.34x
99212Established patient office or other outpatient visit, typically 10 minutes4.8K$188.9K$39.072.28x
96921Laser treatment (250 to 500 sq centimeters) for inflammatory skin disease1.1K$165.3K$146.762.59x
11303Shaving of over 2.0 centimeters skin growth of the trunk, arms, or legs1.1K$129.6K$118.162.31x
11311Shaving of 0.6 centimeters to 1.0 centimeters skin growth of face, ears, eyelids, nose, lips, or mouth1.5K$115.3K$79.132.81x
11602Removal of malignant growth (1.1 to 2.0 centimeters) of the trunk, arms, or legs627$111.8K$178.262.89x
11604Removal of malignant growth (3.1 to 4 centimeters) of the trunk, arms, or legs416$105.3K$253.162.55x

Markup Analysis

Charge-to-Payment Ratio

2.77x

This provider submits charges 2.77 times higher than what Medicare actually pays.

What This Means

A markup ratio of 2.77x means for every $100 Medicare pays, this provider initially charges $277. This is higher than the national average.

Location

Redding, CA

Provider Verification

Always verify provider credentials and location before scheduling appointments. This data reflects Medicare payments and may not include all practice locations.

Similar Providers

Other Dermatology providers in CA for peer comparison.

Tinyee Chang (you)
$11.9M
Artur Henke, MD
$35.6M
Show detailed table โ–พ
ProviderLocationTotal PaymentsStatus
Artur Henke, MDRoseville, CA$35.6Mโœ“ Clear

Related

Browse
โ† Back to Provider Directory
State
All providers in CA โ†’
Specialty
All Dermatology providers โ†’
Tool
Compare this provider โ†’
Analysis
Fraud Watchlist โ†’
Search
Search all providers โ†’

Share This Provider

Share this provider's Medicare payment information

Share:

Data Sources

  • โ€ข Centers for Medicare & Medicaid Services (CMS)
  • โ€ข Medicare Provider Utilization and Payment Data (2014-2023)
  • โ€ข National Plan and Provider Enumeration System (NPPES)

Last Updated: February 2026 (data through 2023, the latest CMS release)

Note: All data is from publicly available Medicare records. OpenMedicare is an independent journalism project not affiliated with CMS.

Believe this data is inaccurate? Dispute this data