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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. Riverwalk Ambulatory Surgery Center Llc
๐Ÿ”ช
Organization

Riverwalk Ambulatory Surgery Center Llc

NPI: 1588839609
Bradenton, FL
10 years of data
Ambulatory Surgical Center
$15.2M
Total Payments
18.2K
Beneficiaries
20.6K
Services
5.36x
Markup Ratio

Peer Comparison

98th
percentile in specialty
This provider$15.2M
Specialty median$657.1K

๐Ÿ“‹ Key Findings

1Billed $15.2M over 10 years
25.36x markup ratio (above median)
398th percentile in Ambulatory Surgical Center by payments
4Payments surged 79% in 2019
520 procedures with >3x markup
โœ“ No flags detected

๐Ÿ”Ž Data Analysis

This provider's $15.2M in total Medicare payments ranks in the 98th percentile of Ambulatory Surgical Center providers nationally.

Their average markup ratio of 5.36x is significantly above the specialty median of 6.1x.

Medicare payments to this provider grew 88% 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 79% 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$4.9K$1.2K3.99x$3.7K$1.2M1.9K1.7K
2015$4.8K$1.1K4.35x$3.7K$1.3M2.0K1.7K
2016$4.9K$1.2K4.21x$3.8K$1.5M2.1K1.8K
2017$3.8K$969.303.92x$2.8K$1.2M2.0K1.8K
2018$3.3K$781.534.20x$2.5K$776.2K1.7K1.5K
2019$5.1K$1.2K4.09x$3.8K$1.4M2.3K2.1K
2020$7.0K$1.2K5.96x$5.9K$1.6M2.2K1.9K
2021$8.6K$1.2K6.92x$7.3K$1.8M2.4K2.1K
2022$9.9K$1.5K6.74x$8.4K$2.3M2.1K1.9K
2023$9.9K$1.6K6.09x$8.3K$2.3M1.9K1.7K

Top Procedures (20)

64590Insertion or replacement of peripheral or gastric neurostimulator generatorโš  4.3x markup
$3.3M
248 services$13.3K/svc4.26x markup
52000Diagnostic examination of the bladder and bladder canal (urethra) using an endoscopeโš  5.4x markup
$1.4M
6.7K services$215.01/svc5.36x markup
64561Insertion of sacral nerve neurostimulator electrodes, accessed through the skinโš  6.2x markup
$1.1M
328 services$3.5K/svc6.17x markup
52601Electro-removal of prostate through bladder canal (urethra) with control of bleeding using an endoscopeโš  5.3x markup
$890.5K
608 services$1.5K/svc5.34x markup
52281Dilation of bladder canal (urethra) using an endoscopeโš  5.2x markup
$760.2K
1.3K services$586.11/svc5.22x markup
55700Biopsy of prostate glandโš  4.9x markup
$702.3K
1.2K services$583.32/svc4.89x markup
64581Incision to insert sacral nerve neurostimulator electrodesโš  5.9x markup
$543.2K
149 services$3.6K/svc5.93x markup
52356Crushing of stone in urinary duct (ureter) with stent using an endoscopeโš  5.4x markup
$527.5K
360 services$1.5K/svc5.44x markup
52332Insertion of stent in urinary duct (ureter) using an endoscopeโš  7.0x markup
$516.9K
710 services$728.06/svc7.00x markup
52234Destruction and/or removal of (0.5 to 2.0 centimeters) small growths of the bladder using an endoscopeโš  6.1x markup
$386.7K
404 services$957.24/svc6.09x markup
C9740Cystourethroscopy, with insertion of transprostatic implant; 4 or more implantsโš  5.9x markup
$384.7K
73 services$5.3K/svc5.87x markup
50590Shock wave crushing of kidney stonesโš  6.0x markup
$378.9K
313 services$1.2K/svc6.03x markup
52235Destruction and/or removal of (2.0 to 5.0 centimeters) medium growths of the bladder and bladder canal (urethra) using an endoscopeโš  5.4x markup
$362.2K
392 services$923.94/svc5.37x markup
64555Implantation of peripheral nerve neurostimulator electrodes, accessed through the skinโš  3.4x markup
$352.3K
109 services$3.2K/svc3.37x markup
55875Insertion of needles or catheters into prostate for radiation therapyโš  6.5x markup
$298.4K
231 services$1.3K/svc6.47x markup
52224Destruction of (less than 0.5 centimeters) growths of the bladder and bladder canal (urethra) using an endoscopeโš  5.0x markup
$296.2K
394 services$751.68/svc4.95x markup
52204Biopsy of the bladder using an endoscopeโš  6.3x markup
$267.6K
517 services$517.60/svc6.25x markup
64635Destruction of lower or sacral spinal facet joint nerves using imaging guidanceโš  6.6x markup
$232.2K
384 services$604.57/svc6.62x markup
55706Needle stereotactic and image-guided biopsy of prostate glandโš  5.8x markup
$220.2K
242 services$910.03/svc5.85x markup
52240Destruction and/or removal of large growths of the bladder using an endoscopeโš  5.8x markup
$174.7K
137 services$1.3K/svc5.83x markup
Show detailed table โ–พ
CodeDescriptionServicesPaymentsAvg/ServiceMarkup
64590Insertion or replacement of peripheral or gastric neurostimulator generator248$3.3M$13.3K4.26x
52000Diagnostic examination of the bladder and bladder canal (urethra) using an endoscope6.7K$1.4M$215.015.36x
64561Insertion of sacral nerve neurostimulator electrodes, accessed through the skin328$1.1M$3.5K6.17x
52601Electro-removal of prostate through bladder canal (urethra) with control of bleeding using an endoscope608$890.5K$1.5K5.34x
52281Dilation of bladder canal (urethra) using an endoscope1.3K$760.2K$586.115.22x
55700Biopsy of prostate gland1.2K$702.3K$583.324.89x
64581Incision to insert sacral nerve neurostimulator electrodes149$543.2K$3.6K5.93x
52356Crushing of stone in urinary duct (ureter) with stent using an endoscope360$527.5K$1.5K5.44x
52332Insertion of stent in urinary duct (ureter) using an endoscope710$516.9K$728.067.00x
52234Destruction and/or removal of (0.5 to 2.0 centimeters) small growths of the bladder using an endoscope404$386.7K$957.246.09x
C9740Cystourethroscopy, with insertion of transprostatic implant; 4 or more implants73$384.7K$5.3K5.87x
50590Shock wave crushing of kidney stones313$378.9K$1.2K6.03x
52235Destruction and/or removal of (2.0 to 5.0 centimeters) medium growths of the bladder and bladder canal (urethra) using an endoscope392$362.2K$923.945.37x
64555Implantation of peripheral nerve neurostimulator electrodes, accessed through the skin109$352.3K$3.2K3.37x
55875Insertion of needles or catheters into prostate for radiation therapy231$298.4K$1.3K6.47x
52224Destruction of (less than 0.5 centimeters) growths of the bladder and bladder canal (urethra) using an endoscope394$296.2K$751.684.95x
52204Biopsy of the bladder using an endoscope517$267.6K$517.606.25x
64635Destruction of lower or sacral spinal facet joint nerves using imaging guidance384$232.2K$604.576.62x
55706Needle stereotactic and image-guided biopsy of prostate gland242$220.2K$910.035.85x
52240Destruction and/or removal of large growths of the bladder using an endoscope137$174.7K$1.3K5.83x

Markup Analysis

Charge-to-Payment Ratio

5.36x

This provider submits charges 5.36 times higher than what Medicare actually pays.

What This Means

A markup ratio of 5.36x means for every $100 Medicare pays, this provider initially charges $536. This is higher than the national average.

Location

Bradenton, FL

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 FL for peer comparison.

Riverwalk Ambulatory Surgery Center Llc (you)
$15.2M
Laser & Surgical Services At Center For Sight Llc
$47.1M
St Lukes Surgical Center Inc
$39.9M
West Florida Medical Center Clinic Pa
$36.5M
Murdock Ambulatory Surgery Center Llc
$36.2M
Show detailed table โ–พ
ProviderLocationTotal PaymentsStatus
Laser & Surgical Services At Center For Sight LlcSarasota, FL$47.1Mโœ“ Clear
St Lukes Surgical Center IncTarpon Springs, FL$39.9Mโœ“ Clear
West Florida Medical Center Clinic PaPensacola, FL$36.5Mโœ“ Clear
Murdock Ambulatory Surgery Center LlcPort Charlotte, FL$36.2Mโœ“ 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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