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    OpenPayerNPI Medicare & MedicaidLouis Chang
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    Louis Chang — Billing Profile & Reimbursement Data

    NPI 1235265364 · Bethesda, MD · Neurological Surgery Physician

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    Louis Chang is a neurological surgery physician provider located in Bethesda, Maryland. 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
    OrganizationLouis Chang
    Address10215 Fernwood Rd
    CityBethesda
    StateMD
    ZIP20817
    TaxonomyNeurological Surgery Physician
    NPI EnumeratedFebruary 25, 2007

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

    Payer SourceTotal Paid
    Medicare$68K
    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
    99204The provider sees a new 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 provider…140$140$18.8K
    63047The provider performs a laminectomy (excision of the thin bony plate at the back of a vertebra), facetectomy (excision of an area of a vertebra characterized by its smooth surface), and foraminotomy…20$980$18.6K
    99215The provider sees an established patient for an office visit or other outpatient visit involving evaluation and management. The visit involves a high level of medical decision making, and/or the…60$160$9.3K
    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…80$110$9K
    99221The provider sees a patient for an initial hospital inpatient or observation care visit involving evaluation and management (E/M). The visit involves a straightforward or low level of medical…50$70$3.7K
    99232The provider sees a patient for a subsequent hospital inpatient or observation care visit involving evaluation and management (E/M). The visit involves a moderate level of medical decision making or…50$70$3.5K
    99231The provider sees a patient for a subsequent hospital inpatient or observation care visit involving evaluation and management (E/M). The visit involves a straightforward or low level of medical…70$40$2.9K
    99203The provider sees a new 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 provider…10$70$960
    99282The provider sees a patient for an emergency department visit involving evaluation and management (E/M). The visit involves a straightforward level of medical decision making.20$40$630
    99202The provider sees a new patient for an office visit or other outpatient visit involving evaluation and management. The visit involves straightforward medical decision making, and/or the provider…10$40$430

    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
    992146,68210,270150$90$24.1K
    630476811020$620$16.8K
    992322,0883,35080$60$11.1K
    992151,6474,07050$120$10.9K
    992045165,38040$120$7.3K
    992033,2803,63040$80$5K
    9923126294040$40$3K
    992216439020$60$2.1K
    9920253057020$50$1.6K
    99282153020$30$660

    Showing 1–10 of 11

    Related Providers

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

    ProviderStateTaxonomyMedicare RevenueMedicaid Revenue
    Kings Physician Services, PCNYDiagnostic Radiology Physician$0$47.3M
    Medstar Franklin Square Physicians LLCMDGeneral Practice Physician$0$15.8M
    Louis ChangCAOphthalmology Physician$2.2M$5.9M
    Ahmad Abu-ghaidaMDVascular Surgery Physician$3.6M$0
    Michael LiouNYInterventional Cardiology Physician$947.3K$2.6M
    Deepali SharmaNYHematology & Oncology Physician$2.6M$57.1K
    Huzefa BahrainMDHematology & Oncology Physician$2.1M$0
    Vinod PatelNYInterventional Cardiology Physician$1.1M$349.6K
    Anthony SalehNYPulmonary Disease Physician$674.9K$626.8K
    David ZelmanNYDiagnostic Radiology Physician$580.2K$563.4K

    Nearby Providers

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

    ProviderStateTaxonomyMedicare RevenueMedicaid Revenue
    Ralph BocciaMDHematology & Oncology Physician$2.5M$0
    Khiet NguyenMDDiagnostic Radiology Physician$1.6M$0
    Jason MarquartMDMOHS-Micrographic Surgery Physician$1.5M$0
    Stephen GrecoMDRadiation Oncology Physician$1.3M$0
    Johns Hopkins Surgery Centers SeriesMDAmbulatory Surgical Clinic/Center$1.2M$0
    Surgical Specialty Center Of Mid Atlantic, LLCMDAmbulatory Surgical Clinic/Center$1.1M$0
    Carolyn HendricksMDSpecialist$1.1M$0
    Srinivas SastryMDOphthalmology Physician$1M$0
    Christopher CannovaMDSpecialist$961.4K$0
    Capitol Surgical Center LLCMDAmbulatory Surgical Clinic/Center$932.8K$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. Maryland Distribution
    Louis Chang — 0 of 11 codes billed far more than typical (above p95)
    p5–p95 (all providers)p25–p75MedianThis providerOutlier
    Rank Distribution — Maryland