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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: 1225375587
San Antonio, TX
10 years of data
Ambulatory Surgical Center
$8.5M
Total Payments
28.3K
Beneficiaries
28.7K
Services
7.64x
Markup Ratio

Peer Comparison

96th
percentile in specialty
This provider$8.5M
Specialty median$657.1K

๐Ÿ“‹ Key Findings

1Billed $8.5M over 10 years
27.64x markup ratio (above median)
396th percentile in Ambulatory Surgical Center by payments
420 procedures with >3x markup
โœ“ No flags detected

๐Ÿ”Ž Data Analysis

This provider's $8.5M in total Medicare payments ranks in the 96th percentile of Ambulatory Surgical Center providers nationally.

Their average markup ratio of 7.64x is significantly above the specialty median of 6.1x.

Medicare payments to this provider grew 196% 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 โ€” the gap represents the markup.

YearAvg SubmittedAvg PaidMarkup RatioGap per ServiceTotal PaymentsServicesBeneficiaries
2014$1.9K$251.707.65x$1.7K$431.9K1.7K1.7K
2015$2.0K$281.527.01x$1.7K$646.3K2.4K2.3K
2016$2.1K$289.527.15x$1.8K$758.1K2.8K2.7K
2017$2.1K$294.817.27x$1.8K$828.6K3.0K3.0K
2018$2.1K$280.717.46x$1.8K$818.6K2.9K2.8K
2019$2.1K$262.067.95x$1.8K$896.6K3.1K3.0K
2020$2.3K$300.727.64x$2.0K$815.4K2.8K2.8K
2021$2.4K$293.238.06x$2.1K$954.4K3.1K3.1K
2022$2.5K$305.548.02x$2.1K$1.0M3.3K3.3K
2023$2.6K$320.578.25x$2.3K$1.3M3.7K3.7K

Top Procedures (20)

45385Removal of polyps or growths of large bowel using an endoscopeโš  6.3x markup
$3.2M
8.8K services$363.04/svc6.25x markup
43239Biopsy of the esophagus, stomach, and/or upper small bowel using an endoscopeโš  10.5x markup
$1.7M
8.0K services$214.33/svc10.48x markup
45380Biopsy of large bowel using an endoscopeโš  7.9x markup
$1.0M
3.7K services$280.53/svc7.94x markup
G0105Colorectal cancer screening; colonoscopy on individual at high riskโš  7.0x markup
$669.0K
2.0K services$329.57/svc6.96x markup
G0121Colorectal cancer screening; colonoscopy on individual not meeting criteria for high riskโš  7.0x markup
$540.6K
1.6K services$330.02/svc6.96x markup
45378Diagnostic examination of large bowel using an endoscopeโš  9.0x markup
$277.1K
1.1K services$245.85/svc8.98x markup
43249Balloon dilation of esophagus using an endoscopeโš  4.8x markup
$266.8K
573 services$465.57/svc4.77x markup
43248Insertion of guide wire with dilation of esophagus using an endoscopeโš  9.4x markup
$165.0K
653 services$252.72/svc9.40x markup
43450Dilation of esophagusโš  8.8x markup
$155.0K
636 services$243.75/svc8.75x markup
43235Diagnostic examination of esophagus, stomach, and/or upper small bowel using an endoscopeโš  8.2x markup
$120.5K
528 services$228.30/svc8.20x markup
43242Ultrasound guided needle aspiration or biopsy of esophagus, stomach, and/or upper small bowel using an endoscopeโš  6.0x markup
$76.2K
177 services$430.32/svc6.04x markup
43259Ultrasound examination of esophagus, stomach and/or upper small bowel using an endoscopeโš  5.5x markup
$74.9K
173 services$433.07/svc5.53x markup
45331Biopsy of large bowel using an endoscopeโš  9.2x markup
$72.7K
321 services$226.40/svc9.22x markup
43251Removal of polyps or growths of esophagus, stomach, and/or upper small bowel using an endoscopeโš  5.0x markup
$41.6K
90 services$462.32/svc4.98x markup
45381Injections of large bowel using an endoscopeโš  10.7x markup
$39.2K
188 services$208.27/svc10.68x markup
45390Removal of large bowel tissue using an endoscopeโš  4.4x markup
$19.9K
35 services$569.99/svc4.36x markup
45330Diagnostic examination of large bowel using an endoscopeโš  24.8x markup
$10.2K
116 services$87.67/svc24.80x markup
43247Removal of foreign bodies of esophagus, stomach, and/or upper small bowel using a flexible endoscopeโš  9.1x markup
$7.9K
28 services$283.03/svc9.13x markup
43245Dilation of stomach outlet using a flexible endoscopeโš  5.1x markup
$5.3K
11 services$481.92/svc5.11x markup
91035Monitoring and recording of gastroesophageal reflux with pH electrode insertion including analysis and interpretationโš  7.9x markup
$2.6K
15 services$171.17/svc7.89x markup
Show detailed table โ–พ
CodeDescriptionServicesPaymentsAvg/ServiceMarkup
45385Removal of polyps or growths of large bowel using an endoscope8.8K$3.2M$363.046.25x
43239Biopsy of the esophagus, stomach, and/or upper small bowel using an endoscope8.0K$1.7M$214.3310.48x
45380Biopsy of large bowel using an endoscope3.7K$1.0M$280.537.94x
G0105Colorectal cancer screening; colonoscopy on individual at high risk2.0K$669.0K$329.576.96x
G0121Colorectal cancer screening; colonoscopy on individual not meeting criteria for high risk1.6K$540.6K$330.026.96x
45378Diagnostic examination of large bowel using an endoscope1.1K$277.1K$245.858.98x
43249Balloon dilation of esophagus using an endoscope573$266.8K$465.574.77x
43248Insertion of guide wire with dilation of esophagus using an endoscope653$165.0K$252.729.40x
43450Dilation of esophagus636$155.0K$243.758.75x
43235Diagnostic examination of esophagus, stomach, and/or upper small bowel using an endoscope528$120.5K$228.308.20x
43242Ultrasound guided needle aspiration or biopsy of esophagus, stomach, and/or upper small bowel using an endoscope177$76.2K$430.326.04x
43259Ultrasound examination of esophagus, stomach and/or upper small bowel using an endoscope173$74.9K$433.075.53x
45331Biopsy of large bowel using an endoscope321$72.7K$226.409.22x
43251Removal of polyps or growths of esophagus, stomach, and/or upper small bowel using an endoscope90$41.6K$462.324.98x
45381Injections of large bowel using an endoscope188$39.2K$208.2710.68x
45390Removal of large bowel tissue using an endoscope35$19.9K$569.994.36x
45330Diagnostic examination of large bowel using an endoscope116$10.2K$87.6724.80x
43247Removal of foreign bodies of esophagus, stomach, and/or upper small bowel using a flexible endoscope28$7.9K$283.039.13x
43245Dilation of stomach outlet using a flexible endoscope11$5.3K$481.925.11x
91035Monitoring and recording of gastroesophageal reflux with pH electrode insertion including analysis and interpretation15$2.6K$171.177.89x

Markup Analysis

Charge-to-Payment Ratio

7.64x

This provider submits charges 7.64 times higher than what Medicare actually pays.

What This Means

A markup ratio of 7.64x means for every $100 Medicare pays, this provider initially charges $764. 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)
$8.5M
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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