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Methodology•Download Data
  1. Home
  2. Providers
  3. Richard Chang
⚕️
MDIndividual

Richard Chang, M.D.

NPI: 1275669954
Walnut Creek, CA
10 years of data
Undefined Physician type
$4.1M
Total Payments
34.7K
Beneficiaries
58.9K
Services
3.79x
Markup Ratio

Peer Comparison

99th
percentile in specialty
This provider$4.1M
Specialty median$100.2K

📋 Key Findings

1Billed $4.1M over 10 years
23.79x markup ratio (above median)
399th percentile in Undefined Physician type by payments
415 procedures with >3x markup
✓ No flags detected

🔎 Data Analysis

This provider's $4.1M in total Medicare payments ranks in the 99th percentile of Undefined Physician type providers nationally.

Medicare payments to this provider grew 86% 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

Submitted Charges vs. Medicare Payments

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

YearAvg SubmittedAvg PaidMarkup RatioGap per ServiceTotal PaymentsServicesBeneficiaries
2014$480.20$116.184.13x$364.02$294.0K3.0K2.2K
2015$521.89$105.814.93x$416.08$342.3K4.1K3.0K
2016$552.51$108.165.11x$444.35$370.4K5.3K3.3K
2017$542.43$97.455.57x$444.98$391.8K6.0K3.4K
2018$484.34$111.834.33x$372.51$388.3K5.9K3.4K
2019$400.51$94.924.22x$305.59$407.5K6.3K3.5K
2020$647.99$134.534.82x$513.46$430.1K6.4K3.4K
2021$453.54$100.844.50x$352.70$459.3K6.8K3.9K
2022$597.89$124.544.80x$473.35$472.4K7.3K4.4K
2023$653.88$134.584.86x$519.30$547.5K7.6K4.1K

Top Procedures (20)

99215Established patient office or other outpatient, visit typically 40 minutes
$605.0K
4.5K services$133.72/svc2.61x markup
99214Established patient office or other outpatient, visit typically 25 minutes
$548.8K
5.7K services$96.62/svc2.74x markup
93306Ultrasound examination of heart including color-depicted blood flow rate, direction, and valve function⚠ 3.7x markup
$497.7K
4.7K services$106.44/svc3.69x markup
99233Subsequent hospital inpatient care, typically 35 minutes per day⚠ 3.1x markup
$261.1K
2.7K services$95.20/svc3.12x markup
93351Ultrasound examination and continuous monitoring of the heart performed during rest, exercise, and/or drug-induced stress with interpretation and report⚠ 3.3x markup
$157.4K
663 services$237.38/svc3.25x markup
93297Remote evaluations of implantable heart monitoring system with physician analysis, review, and report up to 30 days⚠ 3.4x markup
$152.1K
6.8K services$22.47/svc3.36x markup
G2066Interrogation device evaluation(s), (remote) up to 30 days; implantable cardiovascular physiologic monitor system, implantable loop recorder system, or subcutaneous cardiac rhythm monitor system, remote data acquisition(s), receipt of transmissions and tec⚠ 3.5x markup
$152.0K
4.1K services$37.18/svc3.52x markup
99223Initial hospital inpatient care, typically 70 minutes per day
$143.3K
818 services$175.15/svc2.85x markup
99291Critical care delivery critically ill or injured patient, first 30-74 minutes⚠ 3.1x markup
$140.4K
720 services$195.00/svc3.08x markup
99205New patient office or other outpatient visit, typically 60 minutes
$136.7K
763 services$179.17/svc2.66x markup
92928Catheter insertion of stents in major coronary artery or branch, accessed through the skin⚠ 6.6x markup
$121.7K
272 services$447.53/svc6.62x markup
93458Insertion of catheter in left heart for imaging of blood vessels or grafts and left lower heart⚠ 8.7x markup
$109.2K
579 services$188.53/svc8.65x markup
93296Remote evaluations of single, dual, or multiple lead pacemaker or cardioverter-defibrillator transmissions, technician review, support, and distribution of results up to 90 days⚠ 4.8x markup
$93.6K
3.6K services$25.81/svc4.82x markup
93280Evaluation, testing, and programming adjustment of permanent dual lead pacemaker system with physician analysis, review, and report⚠ 3.0x markup
$73.3K
1.2K services$62.16/svc3.02x markup
93294Remote evaluations of single, dual, or multiple lead pacemaker with physician analysis, review, and report up to 90 days⚠ 4.4x markup
$73.0K
2.7K services$27.25/svc4.41x markup
93880Ultrasound scanning of blood flow (outside the brain) on both sides of head and neck⚠ 3.5x markup
$70.0K
401 services$174.47/svc3.52x markup
99204New patient office or other outpatient visit, typically 45 minutes
$66.3K
469 services$141.41/svc2.84x markup
33208Insertion of new or replacement of permanent pacemaker including upper and lower chamber electrodes⚠ 5.3x markup
$58.9K
131 services$449.34/svc5.27x markup
93000Routine EKG using at least 12 leads including interpretation and report⚠ 6.7x markup
$55.4K
3.9K services$14.38/svc6.70x markup
93295Remote evaluations of single, dual, or multiple lead cardioverter-defibrillator with physician analysis, review, and report up to 90 days⚠ 4.7x markup
$49.2K
1.1K services$44.97/svc4.68x markup
Show detailed table ▾
CodeDescriptionServicesPaymentsAvg/ServiceMarkup
99215Established patient office or other outpatient, visit typically 40 minutes4.5K$605.0K$133.722.61x
99214Established patient office or other outpatient, visit typically 25 minutes5.7K$548.8K$96.622.74x
93306Ultrasound examination of heart including color-depicted blood flow rate, direction, and valve function4.7K$497.7K$106.443.69x
99233Subsequent hospital inpatient care, typically 35 minutes per day2.7K$261.1K$95.203.12x
93351Ultrasound examination and continuous monitoring of the heart performed during rest, exercise, and/or drug-induced stress with interpretation and report663$157.4K$237.383.25x
93297Remote evaluations of implantable heart monitoring system with physician analysis, review, and report up to 30 days6.8K$152.1K$22.473.36x
G2066Interrogation device evaluation(s), (remote) up to 30 days; implantable cardiovascular physiologic monitor system, implantable loop recorder system, or subcutaneous cardiac rhythm monitor system, remote data acquisition(s), receipt of transmissions and tec4.1K$152.0K$37.183.52x
99223Initial hospital inpatient care, typically 70 minutes per day818$143.3K$175.152.85x
99291Critical care delivery critically ill or injured patient, first 30-74 minutes720$140.4K$195.003.08x
99205New patient office or other outpatient visit, typically 60 minutes763$136.7K$179.172.66x
92928Catheter insertion of stents in major coronary artery or branch, accessed through the skin272$121.7K$447.536.62x
93458Insertion of catheter in left heart for imaging of blood vessels or grafts and left lower heart579$109.2K$188.538.65x
93296Remote evaluations of single, dual, or multiple lead pacemaker or cardioverter-defibrillator transmissions, technician review, support, and distribution of results up to 90 days3.6K$93.6K$25.814.82x
93280Evaluation, testing, and programming adjustment of permanent dual lead pacemaker system with physician analysis, review, and report1.2K$73.3K$62.163.02x
93294Remote evaluations of single, dual, or multiple lead pacemaker with physician analysis, review, and report up to 90 days2.7K$73.0K$27.254.41x
93880Ultrasound scanning of blood flow (outside the brain) on both sides of head and neck401$70.0K$174.473.52x
99204New patient office or other outpatient visit, typically 45 minutes469$66.3K$141.412.84x
33208Insertion of new or replacement of permanent pacemaker including upper and lower chamber electrodes131$58.9K$449.345.27x
93000Routine EKG using at least 12 leads including interpretation and report3.9K$55.4K$14.386.70x
93295Remote evaluations of single, dual, or multiple lead cardioverter-defibrillator with physician analysis, review, and report up to 90 days1.1K$49.2K$44.974.68x

Markup Analysis

Charge-to-Payment Ratio

3.79x

This provider submits charges 3.79 times higher than what Medicare actually pays.

What This Means

A markup ratio of 3.79x means for every $100 Medicare pays, this provider initially charges $379. This is higher than the national average.

Location

Walnut Creek, CA

Provider Verification

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

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Data Sources

  • • Centers for Medicare & Medicaid Services (CMS)
  • • Medicare Provider Utilization and Payment Data (2014-2023)
  • • 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.

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