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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. Medstar Medical Group - Southern Maryland Llc
๐Ÿ”ช
Organization

Medstar Medical Group - Southern Maryland Llc

NPI: 1730571118
Waldorf, MD
9 years of data
Ambulatory Surgical Center
$9.5M
Total Payments
29.7K
Beneficiaries
30.8K
Services
3.83x
Markup Ratio

Peer Comparison

97th
percentile in specialty
This provider$9.5M
Specialty median$657.1K

๐Ÿ“‹ Key Findings

1Billed $9.5M over 9 years
23.83x markup ratio (above median)
397th percentile in Ambulatory Surgical Center by payments
4Payments surged 986% in 2016
512 procedures with >3x markup
โœ“ No flags detected

๐Ÿ”Ž Data Analysis

This provider's $9.5M in total Medicare payments ranks in the 97th percentile of Ambulatory Surgical Center providers nationally.

Medicare payments to this provider grew 2016% from 2015 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 986% in 2016

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
2015$1.1K$256.554.12x$801.16$79.1K301298
2016$998.65$289.443.45x$709.21$859.0K3.1K3.0K
2017$1.1K$293.593.64x$775.88$895.8K3.3K3.2K
2018$1.0K$292.733.57x$751.15$986.9K3.6K3.5K
2019$1.1K$300.453.69x$809.11$1.1M3.8K3.7K
2020$1.2K$358.883.25x$807.90$833.4K2.6K2.5K
2021$1.1K$346.463.23x$773.12$1.5M4.4K4.2K
2022$1.2K$365.683.19x$799.27$1.6M4.9K4.8K
2023$1.9K$625.863.08x$1.3K$1.7M4.8K4.6K

Top Procedures (20)

45380Biopsy of large bowel using an endoscopeโš  4.3x markup
$1.9M
6.8K services$278.06/svc4.31x markup
45385Removal of polyps or growths of large bowel using an endoscopeโš  3.3x markup
$1.9M
5.1K services$362.32/svc3.30x markup
43239Biopsy of the esophagus, stomach, and/or upper small bowel using an endoscopeโš  5.3x markup
$1.8M
8.2K services$221.83/svc5.30x markup
45390Removal of large bowel tissue using an endoscope
$1.0M
1.3K services$795.99/svc1.48x markup
45378Diagnostic examination of large bowel using an endoscopeโš  4.6x markup
$499.6K
1.9K services$262.95/svc4.60x markup
45384Removal of polyps or growths in large bowel using an endoscopeโš  3.1x markup
$340.9K
987 services$345.38/svc3.12x markup
45381Injections of large bowel using an endoscopeโš  5.8x markup
$335.0K
1.6K services$203.30/svc5.80x markup
43248Insertion of guide wire with dilation of esophagus using an endoscopeโš  3.4x markup
$333.7K
1.1K services$301.15/svc3.38x markup
43251Removal of polyps or growths of esophagus, stomach, and/or upper small bowel using an endoscopeโš  3.0x markup
$290.3K
600 services$483.88/svc3.01x markup
G0121Colorectal cancer screening; colonoscopy on individual not meeting criteria for high risk
$270.0K
817 services$330.53/svc2.70x markup
43249Balloon dilation of esophagus using an endoscope
$248.5K
505 services$492.03/svc2.68x markup
43235Diagnostic examination of esophagus, stomach, and/or upper small bowel using an endoscopeโš  3.7x markup
$188.2K
690 services$272.82/svc3.74x markup
45382Control of bleeding in large bowel using an endoscopeโš  5.5x markup
$106.2K
477 services$222.73/svc5.55x markup
43226Insertion of guide wire for dilation of esophagus using an endoscope
$78.5K
161 services$487.67/svc2.98x markup
33285Insertion of heart rhythm monitor under skinโš  3.1x markup
$67.5K
12 services$5.6K/svc3.15x markup
43255Control of bleeding of esophagus, stomach, and/or upper small bowel using an endoscope
$60.7K
119 services$510.21/svc2.85x markup
44361Biopsy of small bowel using an endoscopeโš  3.1x markup
$30.1K
62 services$485.16/svc3.09x markup
45331Biopsy of large bowel using an endoscope
$17.4K
75 services$231.84/svc2.91x markup
G0105Colorectal cancer screening; colonoscopy on individual at high risk
$13.0K
39 services$332.44/svc2.69x markup
45330Diagnostic examination of large bowel using an endoscope
$8.7K
97 services$89.91/svc2.81x markup
Show detailed table โ–พ
CodeDescriptionServicesPaymentsAvg/ServiceMarkup
45380Biopsy of large bowel using an endoscope6.8K$1.9M$278.064.31x
45385Removal of polyps or growths of large bowel using an endoscope5.1K$1.9M$362.323.30x
43239Biopsy of the esophagus, stomach, and/or upper small bowel using an endoscope8.2K$1.8M$221.835.30x
45390Removal of large bowel tissue using an endoscope1.3K$1.0M$795.991.48x
45378Diagnostic examination of large bowel using an endoscope1.9K$499.6K$262.954.60x
45384Removal of polyps or growths in large bowel using an endoscope987$340.9K$345.383.12x
45381Injections of large bowel using an endoscope1.6K$335.0K$203.305.80x
43248Insertion of guide wire with dilation of esophagus using an endoscope1.1K$333.7K$301.153.38x
43251Removal of polyps or growths of esophagus, stomach, and/or upper small bowel using an endoscope600$290.3K$483.883.01x
G0121Colorectal cancer screening; colonoscopy on individual not meeting criteria for high risk817$270.0K$330.532.70x
43249Balloon dilation of esophagus using an endoscope505$248.5K$492.032.68x
43235Diagnostic examination of esophagus, stomach, and/or upper small bowel using an endoscope690$188.2K$272.823.74x
45382Control of bleeding in large bowel using an endoscope477$106.2K$222.735.55x
43226Insertion of guide wire for dilation of esophagus using an endoscope161$78.5K$487.672.98x
33285Insertion of heart rhythm monitor under skin12$67.5K$5.6K3.15x
43255Control of bleeding of esophagus, stomach, and/or upper small bowel using an endoscope119$60.7K$510.212.85x
44361Biopsy of small bowel using an endoscope62$30.1K$485.163.09x
45331Biopsy of large bowel using an endoscope75$17.4K$231.842.91x
G0105Colorectal cancer screening; colonoscopy on individual at high risk39$13.0K$332.442.69x
45330Diagnostic examination of large bowel using an endoscope97$8.7K$89.912.81x

Markup Analysis

Charge-to-Payment Ratio

3.83x

This provider submits charges 3.83 times higher than what Medicare actually pays.

What This Means

A markup ratio of 3.83x means for every $100 Medicare pays, this provider initially charges $383. This is higher than the national average.

Location

Waldorf, MD

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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