Loading...

    Explore
    • Policy Monitoring
    • Live Policy Feed
    • Billing Codes
    • NPI Medicare & Medicaid
    • Healthcare Providers
    • Health Insurance Payers
    • States
    • Service Lines
    • Taxonomy Codes
    Lookup tools
    • Billing Code Lookup
    • CPT Modifier Lookup
    • Provider Taxonomy Code Lookup
    • Healthcare Provider & Facility Lookup
    • Health Insurance Payer Lookup
    • Payer Contact Directory

    Policy & Benchmark Tools

    • Prior Authorization Lookup
    • Coverage Criteria Lookup
    • Timely Filing Lookup
    • Billing Code Reimbursement Rates
    • Payer Comparison Dashboard
    • Facility Comparison Dashboard
    • All tools

    Company

    • About OpenPayer
    • Data Sources
    • Trek Health
    OpenPayerby Trek Health
    LinkedInYouTube

    © 2026 Trek Health. All rights reserved.

    OpenPayer is built and maintained by Trek Health.

    v1.0.28
    OpenPayerNPI Medicare & MedicaidContra Costa County
    Ask Trek AI about this page

    Table of contents

    Progress1 / 12

    Explore openpayer tools

    • Billing CodesCPT, HCPCS, DRG & more
    • Reimbursement RatesCommercial vs. Medicare rate reports
    • ProvidersHospitals & facilities
    • PayersPlans & market footprint
    • Taxonomy CodesNUCC specialty codes
    • ModifiersCPT modifiers & usage
    • Prior AuthorizationPA policies by payer & drug
    • Timely FilingFiling deadlines by payer
    • Coverage CriteriaMedical necessity by payer
    • Payer ContactsClaims, PA & appeals contacts
    View all tools

    Contra Costa County — Billing Profile & Reimbursement Data

    NPI 1316339609 · Concord, CA · Ambulance

    Customize your policy alerts

    Sign up for Contra Costa County — Billing Profile & Reimbursement Data policy alerts

    Get alerted when relevant policies change without checking for updates manually.

    Monitor payer policy activity

    Receive email alerts as soon as relevant payer policies are published or updated.

    Contra Costa County is a ambulance provider located in Concord, California. This profile covers 5 Medicare and 7 Medicaid CPT/HCPCS procedure codes, with claims volume, average reimbursement, and total revenue by code, benchmarked against other providers billing the same services.

    Provider details (source: NPPES NPI Registry)

    FieldValue
    Entity TypeOrganization
    OrganizationContra Costa County
    Address4005 Port Chicago Hwy Ste 250
    CityConcord
    StateCA
    ZIP94520
    TaxonomyAmbulance
    NPI EnumeratedFebruary 24, 2015

    Lifetime revenue by payer source (source: CMS Medicare & Medicaid claims data)

    Payer SourceTotal Paid
    Medicaid$33.2M
    Medicare$8.4M

    Key Findings

    CONTRA COSTA COUNTY operates as a high-volume emergency ambulance provider: its Medicare billing is dominated by A0427 (A0427 – Ambulance service, advanced life support, emergency transport, level 1) at $6M (71.5% of Medicare revenue), A0429 at $1.5M (18.1%), and A0425 at $730.1K (8.6%); Medicaid mirrors this mix with A0427 at $20.4M (61.5%), A0429 at $8.8M (26.7%), and A0425 at $3.6M (11.0%). These code descriptions (ALS emergency, BLS emergency, and ground mileage) point to a core service line of emergency transport and substantial mileage-based operations rather than non-emergency or ancillary ambulance services.

    Revenue is highly concentrated in a small number of codes for both payers: the top three Medicare codes account for 98.3% of Medicare revenue and the top three Medicaid codes account for 99.1% of Medicaid revenue. That concentration indicates most of the provider’s financial performance hinges on emergency ALS/BLS transports and mileage reimbursements, making patient mix or reimbursement changes for those codes disproportionately impactful.

    Payer mix is strongly weighted toward Medicaid in scale: lifetime Medicaid revenue is $33.2M compared with Medicare revenue of $8.4M. While both payers fund the same core ambulance services, Medicaid is the materially larger revenue source for this provider, indicating payer-specific volumes or contracting likely favor Medicaid-enrolled transports.

    Nationally for Medicare, the provider is an outlier on core emergency codes: A0427 is $6M and ranks #19 of 6841 providers nationally (100th percentile; extreme outlier), A0429 is $1.5M and ranks #84 of 7808 providers (99th percentile; extreme outlier), and A0425 ranks #139 of 8934 providers (98th percentile; notably above typical). These rank and percentile placements indicate the provider handles emergency ambulance volumes that are well above typical national peers and occupies a dominant position for these services on a national scale.

    State-level competitive standing for Medicaid also shows above-typical volume: A0427 has 106.6K claims and $20.4M revenue, ranking #10 of 248 in-state (96th percentile; notably above typical), A0429 has 41.3K claims and $8.8M revenue, ranking #15 of 386 in-state (96th percentile; notably above typical), and A0425 ranks #13 of 580 in-state (98th percentile). Taken together, these placements indicate the provider is a major EMS participant within California for emergency ground transport.

    The provider’s billing activity demonstrates sustained high throughput: examples include 106.6K Medicaid claims for A0427 and 11.9K Medicare claims for A0427, plus large mileage claim counts of 134.8K (Medicaid A0425) and 104.3K (Medicare A0425). Combined with an NPI enumeration date of 2015-02-24 (~11 years ago), the claims volumes suggest an established operation with long-running, consistent emergency transport workflows.

    Less-revenue codes remain marginal or typical relative to peers: Medicare A0433 (183 claims, $134.1K) is noted as notably above typical national volume while Medicaid A0433 (809 claims, $144.8K) is characterized as typical; A0426 appears at much smaller scale in both payers and is labeled typical or unremarkable. This pattern reinforces that the organization’s business is concentrated on emergency ALS/BLS transports rather than on frequent non-emergency ALS-1 or miscellaneous/unlisted ambulance services (A0999 shown as typical/unremarkable in Medicaid).

    Operational implications from the code mix include a heavy reliance on ALS-level emergency responses and mileage reimbursement revenue streams, suggesting fleet, crew, and dispatch capacity are central to the business model. Given the extreme-outlier and high-percentile rankings on core emergency codes, any policy, reimbursement, or regional network changes affecting A0427/A0429/A0425 would likely have outsized effects on this provider’s financials.

    Medicare: Total Revenue Breakdown by CPT/HCPCS Code

    Medicare revenue breakdown by CPT/HCPCS procedure code.

    View: Bar Chart1 / 2

    Medicare: Complete Services Breakdown

    The CPT/HCPCS codes generating the most Medicare revenue for this provider.

    5 rows

    CPT/HCPCS CodeDescriptionClaimsAvg PaidRevenue
    A0427Ambulance service, advanced life support, emergency transport, level 1 (als 1 - emergency)11,950$510$6M
    A0429Ambulance service, basic life support, emergency transport (bls-emergency)3,630$420$1.5M
    A0425Ground mileage, per statute mile104,290$10$730.1K
    A0433Advanced life support, level 2 (als 2)180$730$134.1K
    A0426Ambulance service, advanced life support, non-emergency transport, level 1 (als 1)30$320$9.7K

    Medicare: Competitive Analysis & Benchmarks

    How this provider's Medicare billing volume and revenue compare to other providers nationally and within its state, across 5 CPT/HCPCS codes.

    View: State1 / 2

    Full comparison — all codes billed, vs. state median

    5 rows

    CPT/HCPCS CodeRankProvider CountMedian ClaimsAvg PaidAverage Revenue
    A04278210620$450$997.4K
    A042910220250$380$335.6K
    A0425142608,650$10$185.2K
    A043368040$660$46.9K
    A04265680100$290$42.7K

    Medicaid: Total Revenue Breakdown by CPT/HCPCS Code

    Medicaid revenue breakdown by year and by CPT/HCPCS procedure code, including monthly billing trends and the top codes driving revenue.

    View: By Year1 / 3

    Medicaid: Complete Services Breakdown

    Every CPT/HCPCS code this provider has billed to Medicaid, with claims volume, average payment, and total revenue.

    7 rows

    CPT/HCPCS CodeDescriptionClaimsAvg PaidRevenue
    A0427Ambulance service, advanced life support, emergency transport, level 1 (als 1 - emergency)106,560$190$20.4M
    A0429Ambulance service, basic life support, emergency transport (bls-emergency)41,270$210$8.8M
    A0425Ground mileage, per statute mile134,840$30$3.6M
    A0433Advanced life support, level 2 (als 2)810$180$144.8K
    A0422Ambulance (als or bls) oxygen and oxygen supplies, life sustaining situation12,530$10$125.3K
    A0999Unlisted ambulance service7,410$1$22.2K
    A0426Ambulance service, advanced life support, non-emergency transport, level 1 (als 1)20$110$1.7K

    Medicaid: Competitive Analysis & Benchmarks

    How this provider's Medicaid billing volume and revenue compare to other California providers billing the same CPT/HCPCS codes.

    Full comparison — all codes billed, vs. California median

    7 rows

    CPT/HCPCS CodeDescriptionRankProvider CountMedian ClaimsAvg PaidAverage Revenue
    A0427Ambulance service, advanced life support, emergency transport, level 1 (als 1 - emergency)102502,420$220$3.7M
    A0429Ambulance service, basic life support, emergency transport (bls-emergency)153901,270$220$1.5M
    A0425Ground mileage, per statute mile135803,120$30$963.2K
    A0426Ambulance service, advanced life support, non-emergency transport, level 1 (als 1)6980280$130$148.2K
    A0999Unlisted ambulance service20100600$20$111.4K
    A0433Advanced life support, level 2 (als 2)940170$210$101.5K
    A0422Ambulance (als or bls) oxygen and oxygen supplies, life sustaining situation91401,000$10$33.6K

    Related Providers

    Other providers that share a Tax Identification Number (TIN) with Contra Costa County, ranked by combined Medicare and Medicaid revenue.

    ProviderStateTaxonomyMedicare RevenueMedicaid Revenue
    San Mateo CountyCACommunity/Behavioral Health Agency$0$131.2M

    Nearby Providers

    Other providers in the same ZIP code as Contra Costa County, ranked by combined Medicare and Medicaid revenue.

    ProviderStateTaxonomyMedicare RevenueMedicaid Revenue
    Contra Costa CountyCAAdult Mental Health Clinic/Center$0$33.1M
    John Muir HealthCAGeneral Acute Care Hospital$0$32.2M
    Sutter Visiting Nurse Association And HospiceCAHome Health Agency$0$23.7M
    Premier Surgery CenterCAAmbulatory Surgical Clinic/Center$3.4M$4.6M
    Walailuk ChaiyaratCAHematology & Oncology Physician$1.3M$0
    Lesley MartinCAHematology & Oncology Physician$999.5K$0
    Anita BhatCAEndocrinology, Diabetes & Metabolism Physician$939.8K$50.8K
    Clark TsaiCAOphthalmology Physician$891.3K$52.2K
    Imran JunaidCAAllergy & Immunology (Internal Medicine) Physician$626.2K$0
    Chinnavuth De MonteiroCAInternal Medicine Physician$525.5K$0

    Frequently Asked Questions

    References

    1. 1.Medicare Physician & Other Practitioner by Provider and Service. CMS.gov.Provider-level Medicare Part B utilization and payment data.
    2. 2.NPPES NPI Registry. CMS.gov.National Provider Identifier registry used for provider enumeration and taxonomy metadata.

    Trek Health ingests and normalizes Transparency in Coverage data and payer policy updates to give provider organizations a clear view of how commercial reimbursement behaves across markets, payers, and services. Our platform transforms raw payer disclosures into structured intelligence that supports contract evaluation, payer negotiations, and service line strategy. By combining market benchmarks with ongoing policy visibility, Trek helps teams identify variability, risk, and opportunity in commercial reimbursement. The result is faster insight, stronger negotiating positions, and more informed financial decisions.

    Medicare Revenue by CPT/HCPCS Code
    Claims Volume vs. California Distribution
    Contra Costa County — 2 of 5 codes billed far more than typical (above p95)
    p5–p95 (all providers)p25–p75MedianThis providerOutlier
    Rank Distribution — California
    Medicaid Revenue by Year vs. California Providers
    7 of 7 years billed far more than typical (above p95)
    p5–p95 (all providers)p25–p75MedianThis providerOutlier
    Claims Volume vs. California Distribution
    Contra Costa County — 3 of 7 codes billed far more than typical (above p95)
    p5–p95 (all providers)p25–p75MedianThis providerOutlier
    Rank Distribution — California