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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. Aspen Surgery Center, Llc
๐Ÿ”ช
Organization

Aspen Surgery Center, Llc

NPI: 1710177795
Walnut Creek, CA
10 years of data
Ambulatory Surgical Center
$33.2M
Total Payments
305
Beneficiaries
75.9K
Services
4.26x
Markup Ratio

Peer Comparison

99th
percentile in specialty
This provider$33.2M
Specialty median$657.1K

๐Ÿ“‹ Key Findings

1Billed $33.2M over 10 years
24.26x markup ratio (above median)
399th percentile in Ambulatory Surgical Center by payments
415 procedures with >3x markup
โœ“ No flags detected

๐Ÿ”Ž Data Analysis

This provider's $33.2M in total Medicare payments ranks in the 99th percentile of Ambulatory Surgical Center providers nationally.

Medicare payments to this provider grew 213% 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$939.20$252.723.72x$686.48$1.8M7.3K24
2015$3.3K$854.533.88x$2.5K$1.8M2.1K23
2016$3.5K$906.373.86x$2.6K$2.2M2.5K25
2017$3.3K$839.673.96x$2.5K$2.5M3.0K26
2018$3.1K$703.974.34x$2.4K$2.9M4.1K28
2019$2.3K$511.664.45x$1.8K$3.7M7.2K37
2020$1.3K$313.234.27x$1.0K$3.4M11.0K32
2021$1.9K$443.104.32x$1.5K$4.3M9.6K37
2022$1.7K$390.054.48x$1.4K$4.8M12.3K35
2023$1.5K$341.874.41x$1.2K$5.7M16.8K38

Top Procedures (20)

66984Removal of cataract with insertion of prosthetic lensโš  3.2x markup
$11.8M
11.0K services$1.1K/svc3.19x markup
45385Removal of polyps or growths of large bowel using an endoscope with mechanical snareโš  4.6x markup
$1.8M
3.2K services$551.77/svc4.57x markup
45380Biopsy of large bowel using a flexible endoscopeโš  5.9x markup
$1.6M
3.8K services$426.34/svc5.89x markup
43239Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscopeโš  10.6x markup
$1.3M
4.0K services$317.22/svc10.56x markup
36561Insertion of central venous tube with port (5 years or older)โš  3.5x markup
$908.9K
645 services$1.4K/svc3.54x markup
V2785Processing, preserving and transporting corneal tissue
$840.4K
251 services$3.3K/svc1.27x markup
19301Partial removal of breastโš  5.2x markup
$805.8K
936 services$860.94/svc5.21x markup
66982Complex removal of cataract with insertion of prosthetic lensโš  3.4x markup
$799.6K
797 services$1.0K/svc3.40x markup
49650Repair of groin hernia using an endoscopeโš  3.7x markup
$739.1K
343 services$2.2K/svc3.74x markup
J1097Phenylephrine 10.16 mg/ml and ketorolac 2.88 mg/ml ophthalmic irrigation solution, 1 mlโš  8.6x markup
$729.4K
9.1K services$80.00/svc8.61x markup
38525Biopsy or removal of deep lymph nodes of underarmโš  3.2x markup
$685.3K
581 services$1.2K/svc3.24x markup
0191TInternal insertion of eye fluid drainage device
$633.5K
259 services$2.4K/svc2.05x markup
0275TRemoval of bone from lower spine for decompression of nerve tissue using imaging guidance, accessed through the skin
$588.9K
144 services$4.1K/svc1.52x markup
50590Shock wave crushing of kidney stonesโš  8.5x markup
$551.7K
388 services$1.4K/svc8.54x markup
15823Removal of excessive skin and fat of upper eyelidโš  6.2x markup
$540.3K
805 services$671.15/svc6.18x markup
55875Insertion of needle or tube into prostate for radiation therapyโš  5.1x markup
$474.7K
203 services$2.3K/svc5.07x markup
C2643Brachytherapy source, non-stranded, cesium-131, per source
$441.6K
6.5K services$67.97/svc1.40x markup
58558Biopsy of lining of uterus and/or removal of polyp using an endoscopeโš  4.2x markup
$428.4K
336 services$1.3K/svc4.24x markup
65820Incision to improve eye fluid flow
$405.6K
225 services$1.8K/svc2.02x markup
G0105Colorectal cancer screening; colonoscopy on individual at high riskโš  7.5x markup
$403.6K
806 services$500.78/svc7.53x markup
Show detailed table โ–พ
CodeDescriptionServicesPaymentsAvg/ServiceMarkup
66984Removal of cataract with insertion of prosthetic lens11.0K$11.8M$1.1K3.19x
45385Removal of polyps or growths of large bowel using an endoscope with mechanical snare3.2K$1.8M$551.774.57x
45380Biopsy of large bowel using a flexible endoscope3.8K$1.6M$426.345.89x
43239Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope4.0K$1.3M$317.2210.56x
36561Insertion of central venous tube with port (5 years or older)645$908.9K$1.4K3.54x
V2785Processing, preserving and transporting corneal tissue251$840.4K$3.3K1.27x
19301Partial removal of breast936$805.8K$860.945.21x
66982Complex removal of cataract with insertion of prosthetic lens797$799.6K$1.0K3.40x
49650Repair of groin hernia using an endoscope343$739.1K$2.2K3.74x
J1097Phenylephrine 10.16 mg/ml and ketorolac 2.88 mg/ml ophthalmic irrigation solution, 1 ml9.1K$729.4K$80.008.61x
38525Biopsy or removal of deep lymph nodes of underarm581$685.3K$1.2K3.24x
0191TInternal insertion of eye fluid drainage device259$633.5K$2.4K2.05x
0275TRemoval of bone from lower spine for decompression of nerve tissue using imaging guidance, accessed through the skin144$588.9K$4.1K1.52x
50590Shock wave crushing of kidney stones388$551.7K$1.4K8.54x
15823Removal of excessive skin and fat of upper eyelid805$540.3K$671.156.18x
55875Insertion of needle or tube into prostate for radiation therapy203$474.7K$2.3K5.07x
C2643Brachytherapy source, non-stranded, cesium-131, per source6.5K$441.6K$67.971.40x
58558Biopsy of lining of uterus and/or removal of polyp using an endoscope336$428.4K$1.3K4.24x
65820Incision to improve eye fluid flow225$405.6K$1.8K2.02x
G0105Colorectal cancer screening; colonoscopy on individual at high risk806$403.6K$500.787.53x

Markup Analysis

Charge-to-Payment Ratio

4.26x

This provider submits charges 4.26 times higher than what Medicare actually pays.

What This Means

A markup ratio of 4.26x means for every $100 Medicare pays, this provider initially charges $426. This is higher than the national average.

Location

Walnut Creek, CA

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 CA for peer comparison.

Aspen Surgery Center, Llc (you)
$33.2M
Specialty Surgical Center, Llc
$49.2M
Santa Rosa Surgery Center L P
$41.3M
Peninsula Eye Surgery Center Llc
$37.0M
Fort Sutter Surgery Center A California Limited Partnership
$33.6M
Show detailed table โ–พ
ProviderLocationTotal PaymentsStatus
Specialty Surgical Center, LlcBeverly Hills, CA$49.2Mโœ“ Clear
Santa Rosa Surgery Center L PSanta Rosa, CA$41.3Mโœ“ Clear
Peninsula Eye Surgery Center LlcMountain View, CA$37.0Mโœ“ Clear
Fort Sutter Surgery Center A California Limited PartnershipSacramento, CA$33.6Mโœ“ 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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