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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. Northridge Outpatient Surgery Center Inc
๐Ÿ”ช
Organization

Northridge Outpatient Surgery Center Inc

NPI: 1225439508
Northridge, CA
7 years of data
Ambulatory Surgical Center
$4.8M
Total Payments
7.6K
Beneficiaries
14.6K
Services
20.05x
Markup Ratio

Peer Comparison

93th
percentile in specialty
This provider$4.8M
Specialty median$657.1K

๐Ÿ“‹ Key Findings

1Billed $4.8M over 7 years
220.05x markup ratio (above median)
393th percentile in Ambulatory Surgical Center by payments
4Payments surged 301% in 2016
517 procedures with >3x markup
โœ“ No flags detected

๐Ÿ”Ž Data Analysis

This provider's $4.8M in total Medicare payments ranks in the 93th percentile of Ambulatory Surgical Center providers nationally.

Their average markup ratio of 20.05x is significantly above the specialty median of 6.1x.

Medicare payments to this provider grew 251% 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 301% 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$1.8K$325.205.59x$1.5K$134.2K510335
2016$2.2K$576.453.74x$1.6K$538.7K2.2K1.0K
2017$2.0K$495.503.98x$1.5K$581.4K2.5K1.1K
2018$10.7K$3.4K3.17x$7.3K$1.7M2.9K1.5K
2019$15.0K$2.5K6.10x$12.5K$952.3K2.6K1.4K
2020$5.1K$949.905.37x$4.1K$476.4K1.7K947
2023$19.0K$579.8232.74x$18.4K$470.7K2.2K1.3K

Top Procedures (20)

64483Injections of anesthetic and/or steroid drug into lower or sacral spine nerve root using imaging guidanceโš  20.5x markup
$1.1M
4.5K services$243.87/svc20.51x markup
63685Insertion of spinal neurostimulator pulse generator or receiver
$776.2K
38 services$20.4K/svc1.80x markup
64493Injections of lower or sacral spine facet joint using imaging guidanceโš  31.4x markup
$592.3K
2.3K services$262.09/svc31.36x markup
63650Implantation of spinal neurostimulator electrodes, accessed through the skin
$579.8K
145 services$4.0K/svc2.35x markup
64635Destruction of lower or sacral spinal facet joint nerves using imaging guidanceโš  22.3x markup
$354.8K
535 services$663.20/svc22.32x markup
64479Injections of anesthetic and/or steroid drug into upper or middle spine nerve root using imaging guidanceโš  23.4x markup
$346.8K
1.4K services$246.83/svc23.39x markup
63655Implantation of spinal neurostimulator electrodes
$308.2K
23 services$13.4K/svc1.49x markup
64490Injections of upper or middle spine facet joint using imaging guidanceโš  36.2x markup
$252.5K
950 services$265.83/svc36.16x markup
64555Implantation of peripheral nerve neurostimulator electrodes, accessed through the skinโš  3.6x markup
$160.0K
34 services$4.7K/svc3.56x markup
64633Destruction of upper or middle spinal facet joint nerves using imaging guidanceโš  23.4x markup
$127.0K
198 services$641.35/svc23.36x markup
62323Injection of substance into spinal canal of lower back or sacrum using imaging guidanceโš  61.2x markup
$73.3K
520 services$140.89/svc61.17x markup
62311Injections of substances into lower or sacral spineโš  9.4x markup
$36.6K
217 services$168.60/svc9.40x markup
G0260Injection procedure for sacroiliac joint; provision of anesthetic, steroid and/or other therapeutic agent, with or without arthrographyโš  78.7x markup
$29.1K
132 services$220.61/svc78.67x markup
20553Injections of trigger points in 3 or more musclesโš  214.6x markup
$22.4K
1.4K services$15.94/svc214.62x markup
20610Aspiration and/or injection of large joint or joint capsuleโš  219.9x markup
$20.3K
1.2K services$16.99/svc219.93x markup
64624Destruction of nerve branches of knee using imaging guidanceโš  45.0x markup
$17.9K
23 services$777.20/svc45.03x markup
20552Injection of trigger points, 1-2 musclesโš  747.6x markup
$6.9K
513 services$13.36/svc747.56x markup
64454Injection of anesthetic agent and/or steroid into knee nerve branch using imaging guidanceโš  212.1x markup
$3.1K
22 services$142.55/svc212.05x markup
J7320Hyaluronan or derivitive, genvisc 850, for intra-articular injection, 1 mgโš  30.0x markup
$3.1K
399 services$7.86/svc30.00x markup
64640Destruction of peripheral nerve or branchโš  14.2x markup
$1.1K
20 services$53.97/svc14.24x markup
Show detailed table โ–พ
CodeDescriptionServicesPaymentsAvg/ServiceMarkup
64483Injections of anesthetic and/or steroid drug into lower or sacral spine nerve root using imaging guidance4.5K$1.1M$243.8720.51x
63685Insertion of spinal neurostimulator pulse generator or receiver38$776.2K$20.4K1.80x
64493Injections of lower or sacral spine facet joint using imaging guidance2.3K$592.3K$262.0931.36x
63650Implantation of spinal neurostimulator electrodes, accessed through the skin145$579.8K$4.0K2.35x
64635Destruction of lower or sacral spinal facet joint nerves using imaging guidance535$354.8K$663.2022.32x
64479Injections of anesthetic and/or steroid drug into upper or middle spine nerve root using imaging guidance1.4K$346.8K$246.8323.39x
63655Implantation of spinal neurostimulator electrodes23$308.2K$13.4K1.49x
64490Injections of upper or middle spine facet joint using imaging guidance950$252.5K$265.8336.16x
64555Implantation of peripheral nerve neurostimulator electrodes, accessed through the skin34$160.0K$4.7K3.56x
64633Destruction of upper or middle spinal facet joint nerves using imaging guidance198$127.0K$641.3523.36x
62323Injection of substance into spinal canal of lower back or sacrum using imaging guidance520$73.3K$140.8961.17x
62311Injections of substances into lower or sacral spine217$36.6K$168.609.40x
G0260Injection procedure for sacroiliac joint; provision of anesthetic, steroid and/or other therapeutic agent, with or without arthrography132$29.1K$220.6178.67x
20553Injections of trigger points in 3 or more muscles1.4K$22.4K$15.94214.62x
20610Aspiration and/or injection of large joint or joint capsule1.2K$20.3K$16.99219.93x
64624Destruction of nerve branches of knee using imaging guidance23$17.9K$777.2045.03x
20552Injection of trigger points, 1-2 muscles513$6.9K$13.36747.56x
64454Injection of anesthetic agent and/or steroid into knee nerve branch using imaging guidance22$3.1K$142.55212.05x
J7320Hyaluronan or derivitive, genvisc 850, for intra-articular injection, 1 mg399$3.1K$7.8630.00x
64640Destruction of peripheral nerve or branch20$1.1K$53.9714.24x

Markup Analysis

Charge-to-Payment Ratio

20.05x

This provider submits charges 20.05 times higher than what Medicare actually pays.

What This Means

A markup ratio of 20.05x means for every $100 Medicare pays, this provider initially charges $2005. This is higher than the national average.

Location

Northridge, 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.

Northridge Outpatient Surgery Center Inc (you)
$4.8M
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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