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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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Methodologyโ€ขDownload Data
  1. Home
  2. Providers
  3. Nathaniel Berg
๐Ÿ“ก
MDIndividual

Nathaniel Berg, MD

NPI: 1265646806
Tamuning, GU
10 years of data
Diagnostic Radiology
$4.8M
Total Payments
59.3K
Beneficiaries
66.8K
Services
1.53x
Markup Ratio

Peer Comparison

99th
percentile in specialty
This provider$4.8M
Specialty median$115.6K

๐Ÿ“‹ Key Findings

1Billed $4.8M over 10 years
21.53x markup ratio
399th percentile in Diagnostic Radiology by payments
โœ“ No flags detected

๐Ÿ”Ž Data Analysis

This provider's $4.8M in total Medicare payments ranks in the 99th percentile of Diagnostic Radiology providers nationally.

This provider's billing patterns fall within normal ranges for their specialty.

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 โ€” the gap represents the markup.

YearAvg SubmittedAvg PaidMarkup RatioGap per ServiceTotal PaymentsServicesBeneficiaries
2014$116.53$77.831.50x$38.70$387.6K5.2K4.7K
2015$122.33$80.661.52x$41.67$338.4K4.4K3.8K
2016$145.67$97.701.49x$47.97$396.2K4.7K4.0K
2017$171.08$114.441.49x$56.64$543.0K6.0K5.5K
2018$165.92$117.031.42x$48.89$624.5K6.9K6.3K
2019$150.72$102.821.47x$47.90$608.6K7.5K6.8K
2020$171.71$88.861.93x$82.85$492.6K8.0K6.9K
2021$175.44$101.271.73x$74.17$365.2K7.0K6.1K
2022$193.85$107.731.80x$86.12$519.7K8.8K7.7K
2023$169.94$108.421.57x$61.52$502.3K8.3K7.3K

Top Procedures (20)

93306Ultrasound examination of heart including color-depicted blood flow rate, direction, and valve function
$902.7K
8.3K services$108.24/svc1.65x markup
78452Nuclear medicine study of vessels of heart using drugs or exercise multiple studies
$752.7K
1.8K services$425.01/svc1.35x markup
93458Insertion of catheter in left heart for imaging of blood vessels or grafts and left lower heart
$242.0K
365 services$663.15/svc1.51x markup
77067Mammography of both breasts
$220.7K
1.6K services$139.80/svc1.05x markup
G0202Screening mammography, producing direct digital image, bilateral, all views
$184.5K
1.3K services$139.60/svc1.06x markup
A9500Technetium tc-99m sestamibi, diagnostic, per study dose
$181.1K
1.8K services$101.98/svc1.89x markup
77080Bone density measurement using dedicated X-ray machine
$145.4K
3.4K services$43.11/svc1.14x markup
77049MRI of both breasts with and without contrast
$115.0K
355 services$323.87/svc1.62x markup
93226Heart rhythm analysis, interpretation and report of 48-hour EKG
$103.6K
3.7K services$27.92/svc1.70x markup
19083Biopsy of breast accessed through the skin with ultrasound guidance
$95.6K
181 services$527.96/svc1.54x markup
99214Established patient office or other outpatient, visit typically 25 minutes
$83.7K
917 services$91.23/svc1.39x markup
19081Biopsy of breast accessed through the skin with stereotactic guidance
$79.6K
146 services$545.29/svc1.48x markup
32408Core needle biopsy of lung or center cavity of chest (mediastinum), accessed through skin
$72.4K
94 services$770.69/svc1.51x markup
62323Injection of substance into spinal canal of lower back or sacrum using imaging guidance
$70.8K
346 services$204.49/svc1.55x markup
93017Exercise or drug-induced heart and blood vessel stress test with EKG tracing and monitoring
$70.5K
2.8K services$25.18/svc1.83x markup
78306Bone and/or joint imaging, whole body
$67.2K
291 services$230.82/svc1.43x markup
93925Ultrasound study of arteries and arterial grafts of both legs
$65.7K
314 services$209.23/svc1.42x markup
77065Mammography of one breast
$62.5K
677 services$92.26/svc1.61x markup
99213Established patient office or other outpatient visit, typically 15 minutes
$61.3K
916 services$66.89/svc1.49x markup
77012Radiological supervision and interpretation of CT guidance for needle insertion
$60.8K
551 services$110.33/svc1.72x markup
Show detailed table โ–พ
CodeDescriptionServicesPaymentsAvg/ServiceMarkup
93306Ultrasound examination of heart including color-depicted blood flow rate, direction, and valve function8.3K$902.7K$108.241.65x
78452Nuclear medicine study of vessels of heart using drugs or exercise multiple studies1.8K$752.7K$425.011.35x
93458Insertion of catheter in left heart for imaging of blood vessels or grafts and left lower heart365$242.0K$663.151.51x
77067Mammography of both breasts1.6K$220.7K$139.801.05x
G0202Screening mammography, producing direct digital image, bilateral, all views1.3K$184.5K$139.601.06x
A9500Technetium tc-99m sestamibi, diagnostic, per study dose1.8K$181.1K$101.981.89x
77080Bone density measurement using dedicated X-ray machine3.4K$145.4K$43.111.14x
77049MRI of both breasts with and without contrast355$115.0K$323.871.62x
93226Heart rhythm analysis, interpretation and report of 48-hour EKG3.7K$103.6K$27.921.70x
19083Biopsy of breast accessed through the skin with ultrasound guidance181$95.6K$527.961.54x
99214Established patient office or other outpatient, visit typically 25 minutes917$83.7K$91.231.39x
19081Biopsy of breast accessed through the skin with stereotactic guidance146$79.6K$545.291.48x
32408Core needle biopsy of lung or center cavity of chest (mediastinum), accessed through skin94$72.4K$770.691.51x
62323Injection of substance into spinal canal of lower back or sacrum using imaging guidance346$70.8K$204.491.55x
93017Exercise or drug-induced heart and blood vessel stress test with EKG tracing and monitoring2.8K$70.5K$25.181.83x
78306Bone and/or joint imaging, whole body291$67.2K$230.821.43x
93925Ultrasound study of arteries and arterial grafts of both legs314$65.7K$209.231.42x
77065Mammography of one breast677$62.5K$92.261.61x
99213Established patient office or other outpatient visit, typically 15 minutes916$61.3K$66.891.49x
77012Radiological supervision and interpretation of CT guidance for needle insertion551$60.8K$110.331.72x

Markup Analysis

Charge-to-Payment Ratio

1.53x

This provider submits charges 1.53 times higher than what Medicare actually pays.

What This Means

A markup ratio of 1.53x means for every $100 Medicare pays, this provider initially charges $153. This is lower than the national average.

Location

Tamuning, GU

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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