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

Methodologyโ€ขDownload Data
  1. Home
  2. Providers
  3. Han-Chih Chang
๐ŸŽ—๏ธ
MDIndividual

Han-Chih Chang, M.D.

NPI: 1790776755
Nashville, TN
10 years of data
Radiation Oncology
$14.3M
Total Payments
17.6K
Beneficiaries
59.0K
Services
6.14x
Markup Ratio

Peer Comparison

99th
percentile in specialty
This provider$14.3M
Specialty median$300.5K

๐Ÿ“‹ Key Findings

1Billed $14.3M over 10 years
26.14x markup ratio (above median)
399th percentile in Radiation Oncology by payments
4Payments surged 865% in 2019
519 procedures with >3x markup
โœ“ No flags detected

๐Ÿ”Ž Data Analysis

This provider's $14.3M in total Medicare payments ranks in the 99th percentile of Radiation Oncology providers nationally.

Their average markup ratio of 6.14x is significantly above the specialty median of 5.0x.

Medicare payments to this provider grew 2198% from 2014 to 2023.

68% of their billing comes from a single procedure code (77523 โ€” Proton treatment delivery, intermediate).

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 865% in 2019

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$642.91$92.116.98x$550.80$111.0K2.0K897
2015$640.53$91.766.98x$548.77$117.9K2.1K898
2016$648.05$97.076.68x$550.98$144.8K2.6K1.1K
2017$630.91$96.946.51x$533.97$123.3K2.1K986
2018$790.84$120.566.56x$670.28$154.3K1.5K442
2019$1.4K$266.905.21x$1.1K$1.5M4.9K1.2K
2020$1.4K$266.355.32x$1.2K$3.3M10.9K2.7K
2021$1.6K$285.215.57x$1.3K$3.5M12.5K3.2K
2022$1.6K$261.555.96x$1.3K$2.8M10.4K2.9K
2023$1.2K$196.945.95x$974.03$2.6M10.1K3.3K

Top Procedures (20)

77523Proton treatment delivery, intermediateโš  6.3x markup
$9.4M
13.7K services$690.34/svc6.28x markup
G6002Stereoscopic x-ray guidance for localization of target volume for the delivery of radiation therapyโš  5.9x markup
$816.0K
17.7K services$46.04/svc5.86x markup
55874Injection of biodegradable material next to prostateโš  5.7x markup
$731.9K
327 services$2.2K/svc5.66x markup
77427Radiation treatment management, 5 treatmentsโš  5.9x markup
$725.1K
4.9K services$146.99/svc5.87x markup
G6015Intensity modulated treatment delivery, single or multiple fields/arcs,via narrow spatially and temporally modulated beams, binary, dynamic mlc, per treatment sessionโš  8.7x markup
$344.3K
1.4K services$253.14/svc8.70x markup
77295Management of radiation therapy, 3Dโš  6.5x markup
$254.5K
763 services$333.61/svc6.46x markup
77336Radiation therapy consultation per weekโš  5.0x markup
$223.5K
3.8K services$58.27/svc4.98x markup
77290Management of radiation therapy, simulation, complexโš  5.7x markup
$203.3K
685 services$296.76/svc5.65x markup
77280Management of radiation therapy simulation, simpleโš  5.5x markup
$151.7K
986 services$153.81/svc5.51x markup
77334Radiation treatment devices, design and construction, complexโš  6.0x markup
$150.7K
1.7K services$86.17/svc5.95x markup
99205New patient office or other outpatient visit, typically 60 minutesโš  4.4x markup
$142.2K
910 services$156.27/svc4.42x markup
77014CT scan guidance for insertion of radiation therapy fieldsโš  5.2x markup
$128.4K
1.6K services$81.81/svc5.17x markup
77263Management of radiation therapy, complexโš  6.3x markup
$104.0K
804 services$129.36/svc6.35x markup
77525Proton treatment delivery, complexโš  5.7x markup
$101.0K
131 services$770.82/svc5.71x markup
77301Management of modulation radiotherapy planningโš  6.0x markup
$85.9K
131 services$655.51/svc6.03x markup
A4648Tissue marker, implantable, any type, each
$68.4K
381 services$179.62/svc2.11x markup
99214Established patient office or other outpatient, visit typically 25 minutesโš  3.6x markup
$66.6K
801 services$83.19/svc3.59x markup
99213Established patient office or other outpatient visit, typically 15 minutesโš  4.3x markup
$64.5K
1.2K services$55.10/svc4.35x markup
77307Radiation therapy planโš  5.1x markup
$61.1K
284 services$215.02/svc5.13x markup
77370Radiation therapy consultationโš  5.0x markup
$56.3K
613 services$91.87/svc4.95x markup
Show detailed table โ–พ
CodeDescriptionServicesPaymentsAvg/ServiceMarkup
77523Proton treatment delivery, intermediate13.7K$9.4M$690.346.28x
G6002Stereoscopic x-ray guidance for localization of target volume for the delivery of radiation therapy17.7K$816.0K$46.045.86x
55874Injection of biodegradable material next to prostate327$731.9K$2.2K5.66x
77427Radiation treatment management, 5 treatments4.9K$725.1K$146.995.87x
G6015Intensity modulated treatment delivery, single or multiple fields/arcs,via narrow spatially and temporally modulated beams, binary, dynamic mlc, per treatment session1.4K$344.3K$253.148.70x
77295Management of radiation therapy, 3D763$254.5K$333.616.46x
77336Radiation therapy consultation per week3.8K$223.5K$58.274.98x
77290Management of radiation therapy, simulation, complex685$203.3K$296.765.65x
77280Management of radiation therapy simulation, simple986$151.7K$153.815.51x
77334Radiation treatment devices, design and construction, complex1.7K$150.7K$86.175.95x
99205New patient office or other outpatient visit, typically 60 minutes910$142.2K$156.274.42x
77014CT scan guidance for insertion of radiation therapy fields1.6K$128.4K$81.815.17x
77263Management of radiation therapy, complex804$104.0K$129.366.35x
77525Proton treatment delivery, complex131$101.0K$770.825.71x
77301Management of modulation radiotherapy planning131$85.9K$655.516.03x
A4648Tissue marker, implantable, any type, each381$68.4K$179.622.11x
99214Established patient office or other outpatient, visit typically 25 minutes801$66.6K$83.193.59x
99213Established patient office or other outpatient visit, typically 15 minutes1.2K$64.5K$55.104.35x
77307Radiation therapy plan284$61.1K$215.025.13x
77370Radiation therapy consultation613$56.3K$91.874.95x

Markup Analysis

Charge-to-Payment Ratio

6.14x

This provider submits charges 6.14 times higher than what Medicare actually pays.

What This Means

A markup ratio of 6.14x means for every $100 Medicare pays, this provider initially charges $614. This is higher than the national average.

Location

Nashville, TN

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

  • 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.

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