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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.
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. Gcsa Ambulatory Surgery Center, Llc
๐Ÿ”ช
Organization

Gcsa Ambulatory Surgery Center, Llc

NPI: 1275870537
San Antonio, TX
10 years of data
Ambulatory Surgical Center
$10.0M
Total Payments
32.4K
Beneficiaries
32.9K
Services
7.42x
Markup Ratio

Peer Comparison

97th
percentile in specialty
This provider$10.0M
Specialty median$657.1K

๐Ÿ“‹ Key Findings

1Billed $10.0M over 10 years
27.42x markup ratio (above median)
397th percentile in Ambulatory Surgical Center by payments
4Payments surged 56% in 2017
520 procedures with >3x markup
โœ“ No flags detected

๐Ÿ”Ž Data Analysis

This provider's $10.0M in total Medicare payments ranks in the 97th percentile of Ambulatory Surgical Center providers nationally.

Their average markup ratio of 7.42x is significantly above the specialty median of 6.1x.

Medicare payments to this provider grew 177% 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 2017

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$1.9K$241.777.83x$1.7K$556.5K2.1K2.1K
2015$1.9K$256.237.39x$1.6K$795.8K2.9K2.8K
2016$2.0K$270.447.38x$1.7K$597.0K2.2K2.1K
2017$2.1K$294.177.27x$1.8K$932.9K3.3K3.3K
2018$2.1K$296.067.23x$1.8K$1.0M3.5K3.5K
2019$2.2K$307.787.11x$1.9K$1.1M3.8K3.7K
2020$2.3K$338.516.92x$2.0K$980.9K3.2K3.2K
2021$2.5K$364.556.78x$2.1K$1.2M3.6K3.5K
2022$2.6K$350.817.31x$2.2K$1.3M4.0K3.9K
2023$2.8K$377.667.30x$2.4K$1.5M4.3K4.3K

Top Procedures (20)

45385Removal of polyps or growths of large bowel using an endoscopeโš  6.3x markup
$3.0M
8.2K services$361.53/svc6.30x markup
43239Biopsy of the esophagus, stomach, and/or upper small bowel using an endoscopeโš  10.1x markup
$1.7M
7.7K services$224.08/svc10.06x markup
45380Biopsy of large bowel using an endoscopeโš  7.3x markup
$1.3M
4.5K services$301.99/svc7.31x markup
G0105Colorectal cancer screening; colonoscopy on individual at high riskโš  6.9x markup
$917.3K
2.8K services$329.74/svc6.89x markup
G0121Colorectal cancer screening; colonoscopy on individual not meeting criteria for high riskโš  7.0x markup
$778.0K
2.4K services$327.85/svc6.95x markup
43235Diagnostic examination of esophagus, stomach, and/or upper small bowel using an endoscopeโš  8.0x markup
$453.9K
1.9K services$243.90/svc7.98x markup
45378Diagnostic examination of large bowel using an endoscopeโš  9.1x markup
$411.1K
1.7K services$243.71/svc9.10x markup
43249Balloon dilation of esophagus using an endoscopeโš  4.8x markup
$407.0K
850 services$478.85/svc4.77x markup
43259Ultrasound examination of esophagus, stomach and/or upper small bowel using an endoscopeโš  6.3x markup
$260.0K
528 services$492.40/svc6.32x markup
43242Ultrasound guided needle aspiration or biopsy of esophagus, stomach, and/or upper small bowel using an endoscopeโš  5.2x markup
$215.2K
443 services$485.76/svc5.17x markup
43248Insertion of guide wire with dilation of esophagus using an endoscopeโš  9.1x markup
$133.5K
513 services$260.27/svc9.12x markup
43251Removal of polyps or growths of esophagus, stomach, and/or upper small bowel using an endoscopeโš  5.0x markup
$82.9K
182 services$455.57/svc5.02x markup
45381Injections of large bowel using an endoscopeโš  11.0x markup
$73.7K
367 services$200.71/svc10.96x markup
45390Removal of large bowel tissue using an endoscopeโš  4.3x markup
$67.1K
99 services$677.48/svc4.26x markup
45331Biopsy of large bowel using an endoscopeโš  9.8x markup
$58.9K
274 services$214.90/svc9.85x markup
43450Dilation of esophagusโš  8.0x markup
$50.6K
207 services$244.47/svc8.00x markup
45330Diagnostic examination of large bowel using an endoscopeโš  24.9x markup
$26.8K
315 services$84.95/svc24.91x markup
43237Ultrasound examination of esophagus, stomach, and/or upper small bowel using an endoscopeโš  6.0x markup
$6.4K
16 services$401.39/svc5.98x markup
43238Ultrasound guided needle aspiration or biopsies of esophagus using an endoscopeโš  4.6x markup
$6.1K
12 services$510.38/svc4.64x markup
45338Removal of polyps or growths of lower large bowel using a flexible endoscope with mechanical snareโš  6.5x markup
$4.1K
11 services$373.87/svc6.53x markup
Show detailed table โ–พ
CodeDescriptionServicesPaymentsAvg/ServiceMarkup
45385Removal of polyps or growths of large bowel using an endoscope8.2K$3.0M$361.536.30x
43239Biopsy of the esophagus, stomach, and/or upper small bowel using an endoscope7.7K$1.7M$224.0810.06x
45380Biopsy of large bowel using an endoscope4.5K$1.3M$301.997.31x
G0105Colorectal cancer screening; colonoscopy on individual at high risk2.8K$917.3K$329.746.89x
G0121Colorectal cancer screening; colonoscopy on individual not meeting criteria for high risk2.4K$778.0K$327.856.95x
43235Diagnostic examination of esophagus, stomach, and/or upper small bowel using an endoscope1.9K$453.9K$243.907.98x
45378Diagnostic examination of large bowel using an endoscope1.7K$411.1K$243.719.10x
43249Balloon dilation of esophagus using an endoscope850$407.0K$478.854.77x
43259Ultrasound examination of esophagus, stomach and/or upper small bowel using an endoscope528$260.0K$492.406.32x
43242Ultrasound guided needle aspiration or biopsy of esophagus, stomach, and/or upper small bowel using an endoscope443$215.2K$485.765.17x
43248Insertion of guide wire with dilation of esophagus using an endoscope513$133.5K$260.279.12x
43251Removal of polyps or growths of esophagus, stomach, and/or upper small bowel using an endoscope182$82.9K$455.575.02x
45381Injections of large bowel using an endoscope367$73.7K$200.7110.96x
45390Removal of large bowel tissue using an endoscope99$67.1K$677.484.26x
45331Biopsy of large bowel using an endoscope274$58.9K$214.909.85x
43450Dilation of esophagus207$50.6K$244.478.00x
45330Diagnostic examination of large bowel using an endoscope315$26.8K$84.9524.91x
43237Ultrasound examination of esophagus, stomach, and/or upper small bowel using an endoscope16$6.4K$401.395.98x
43238Ultrasound guided needle aspiration or biopsies of esophagus using an endoscope12$6.1K$510.384.64x
45338Removal of polyps or growths of lower large bowel using a flexible endoscope with mechanical snare11$4.1K$373.876.53x

Markup Analysis

Charge-to-Payment Ratio

7.42x

This provider submits charges 7.42 times higher than what Medicare actually pays.

What This Means

A markup ratio of 7.42x means for every $100 Medicare pays, this provider initially charges $742. This is higher than the national average.

Location

San Antonio, TX

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 Ambulatory Surgical Center providers in TX for peer comparison.

Gcsa Ambulatory Surgery Center, Llc (you)
$10.0M
Ophthalmology Surgery Center Of Dallas, Llc
$76.6M
Round Rock Surgery Center Llc
$56.6M
Amarillo Cataract And Eye Surgery
$33.3M
Show detailed table โ–พ
ProviderLocationTotal PaymentsStatus
Ophthalmology Surgery Center Of Dallas, LlcDallas, TX$76.6Mโœ“ Clear
Round Rock Surgery Center LlcRound Rock, TX$56.6Mโœ“ Clear
Amarillo Cataract And Eye SurgeryAmarillo, TX$33.3Mโœ“ Clear

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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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