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    v1.0.28
    OpenPayerNPI Medicare & MedicaidAnna Chang
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    Anna Chang — Billing Profile & Reimbursement Data

    NPI 1568402931 · Concord, CA · Internal Medicine Physician

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    Anna Chang is a internal medicine physician provider located in Concord, California. This profile covers 11 Medicare and 0 Medicaid CPT/HCPCS procedure codes, with claims volume, average reimbursement, and total revenue by code, benchmarked against other providers billing the same services.

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    Provider details (source: NPPES NPI Registry)

    FieldValue
    Entity TypeIndividual
    OrganizationAnna Chang
    Address2700 Grant St
    CityConcord
    StateCA
    ZIP94520
    TaxonomyInternal Medicine Physician
    NPI EnumeratedJune 7, 2006

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

    Payer SourceTotal Paid
    Medicare$124.5K
    Medicaid$0

    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.

    11 rows

    CPT/HCPCS CodeDescriptionClaimsAvg PaidRevenue
    99214The provider sees an established patient for an office visit or other outpatient visit involving evaluation and management. The visit involves a moderate level of medical decision making, and/or the…350$100$35.7K
    G0108Diabetes outpatient self-management training services, individual, per 30 minutes730$50$34.9K
    J0897Injection, denosumab, 1 mg1,620$20$27.5K
    99213The provider sees an established patient for an office visit or other outpatient visit involving evaluation and management. The visit involves a low level of medical decision making, and/or the…190$70$13.3K
    95251A provider analyzes and interprets data from a patient’s continuous glucose monitor (CGM) and writes a report based on interpretation. This code represents the professional component of the service…140$30$4.2K
    96365The provider administers the initial intravenous infusion of a medication or other substance for a period up to one hour to prevent, treat, or diagnose a condition or disease.40$60$2.3K
    G0109Diabetes outpatient self-management training services, group session (2 or more), per 30 minutes130$20$1.9K
    83036Sugar in the bloodstream can get attached to the hemoglobin in red blood cells. Once the sugar is attached, it stays there for the lifetime of the red blood cell (around 120 days or over 3 months).…200$10$1.8K
    J3489Injection, zoledronic acid, 1 mg190$10$1.3K
    99442N/A20$50$960

    Showing 1–10 of 11

    Medicare: Competitive Analysis & Benchmarks

    How this provider's Medicare billing volume and revenue compare to other providers nationally and within its state, across 11 CPT/HCPCS codes.

    View: State1 / 2

    Full comparison — all codes billed, vs. state median

    11 rows

    CPT/HCPCS CodeRankProvider CountMedian ClaimsAvg PaidAverage Revenue
    J08977371,0303,060$20$91.4K
    992147,90437,970120$90$23.2K
    992139,46334,66080$70$13.2K
    9636558179080$60$9.7K
    830362831,94050$10$7.6K
    G0108614060$40$5.5K
    994422,2823,53030$60$4.1K
    9525112143080$30$3.2K
    G0109710170$10$2.8K
    963722,7764,96050$10$1.5K

    Showing 1–10 of 11

    Related Providers

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

    ProviderStateTaxonomyMedicare RevenueMedicaid Revenue
    Gigi ChenCAHematology & Oncology Physician$2.2M$0
    Qaiser NiazCAHematology & Oncology Physician$1.9M$0
    Jewel JohlCAHematology & Oncology Physician$1.9M$0
    Jesse JungCAOphthalmology Physician$1.7M$0
    Gautam PrasadCARadiation Oncology Physician$1.4M$0
    Soon LeeCAOphthalmology Physician$1.3M$0
    Robert RoblesCAHematology & Oncology Physician$1.3M$0
    Zahora AllyCARadiation Oncology Physician$1.1M$0
    Daniel BrintonCAOphthalmology Physician$947.5K$0
    Sunil GandhiCADiagnostic Radiology Physician$551.9K$0

    Nearby Providers

    Other providers in the same ZIP code as Anna Chang, ranked by combined Medicare and Medicaid revenue.

    ProviderStateTaxonomyMedicare RevenueMedicaid Revenue
    Contra Costa CountyCAAmbulance$8.4M$33.2M
    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

    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
    Anna Chang — 1 of 11 codes billed far more than typical (above p95)
    p5–p95 (all providers)p25–p75MedianThis providerOutlier
    Rank Distribution — California