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    v1.0.28
    OpenPayerNPI Medicare & MedicaidDerek Nguyen
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    Derek Nguyen — Billing Profile & Reimbursement Data

    NPI 1528054095 · Riverside, CA · Internal Medicine Physician

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    Derek Nguyen is a internal medicine physician provider located in Riverside, California. This profile covers 30 Medicare and 14 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 TypeIndividual
    OrganizationDerek Nguyen
    Address3767 Elizabeth St
    CityRiverside
    StateCA
    ZIP92506
    TaxonomyInternal Medicine Physician
    NPI EnumeratedSeptember 21, 2005

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

    Payer SourceTotal Paid
    Medicare$686K
    Medicaid$108.5K

    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.

    30 rows

    CPT/HCPCS CodeDescriptionClaimsAvg PaidRevenue
    99309The provider sees a patient for a subsequent nursing facility care visit involving evaluation and management (E/M). The visit involves a moderate level of medical decision making or the provider…2,730$90$240.2K
    99310The provider sees a patient for a subsequent nursing facility care visit involving evaluation and management (E/M). The visit involves a high level of medical decision making or the provider spends…1,200$120$148.2K
    99233The provider sees a patient for a subsequent hospital inpatient or observation care visit involving evaluation and management (E/M). The visit involves a high level of medical decision making or the…860$100$84.1K
    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…370$100$36.4K
    99306The provider sees a patient for an initial nursing facility care visit involving evaluation and management (E/M). The visit involves high medical decision making, and/or the provider spends at least…200$150$29.7K
    99497The provider discusses and shares planning with a patient, his family, or an individual representing the patient, regarding the future health care needs of the patient. Use this code for the first 30…450$60$27.4K
    99223The provider sees a patient for an initial hospital inpatient or observation care visit involving evaluation and management (E/M). The visit involves a high level of medical decision making or the…180$140$24.9K
    99239The provider sees a patient for hospital inpatient or observation discharge day management, involving evaluation and management (E/M). The provider spends more than 30 minutes on the service on the…150$100$14.4K
    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…80$150$12.3K
    99349The provider sees an established patient for a home or residence visit involving evaluation and management (E/M). The visit involves moderate medical decision making or the provider spends at least…100$110$10.4K

    Showing 1–10 of 30

    Medicare: Competitive Analysis & Benchmarks

    How this provider's Medicare billing volume and revenue compare to other providers nationally and within its state, across 30 CPT/HCPCS codes.

    View: State1 / 2

    Full comparison — all codes billed, vs. state median

    30 rows

    CPT/HCPCS CodeRankProvider CountMedian ClaimsAvg PaidAverage Revenue
    99309701,790210$80$48.1K
    9935037255080$140$38.8K
    99349448870110$90$31.7K
    993103684090$120$31.2K
    9923365511,530120$100$26.2K
    994908121,060210$50$25.8K
    992147,53837,970120$90$23.2K
    171101,6441,840110$90$17K
    993061841,32060$150$15.5K
    992155,08515,36050$130$14.4K

    Showing 1–10 of 30

    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.

    14 rows

    CPT/HCPCS CodeDescriptionClaimsAvg PaidRevenue
    99309The provider sees a patient for a subsequent nursing facility care visit involving evaluation and management (E/M). The visit involves a moderate level of medical decision making or the provider…3,570$10$46.4K
    99310The provider sees a patient for a subsequent nursing facility care visit involving evaluation and management (E/M). The visit involves a high level of medical decision making or the provider spends…1,570$20$28.3K
    99308The provider sees a patient for a subsequent nursing facility care visit involving evaluation and management (E/M). The visit involves a low level of medical decision making and/or the provider…1,040$10$12.5K
    99497The provider discusses and shares planning with a patient, his family, or an individual representing the patient, regarding the future health care needs of the patient. Use this code for the first 30…410$20$9K
    99306The provider sees a patient for an initial nursing facility care visit involving evaluation and management (E/M). The visit involves high medical decision making, and/or the provider spends at least…180$40$6.7K
    99233The provider sees a patient for a subsequent hospital inpatient or observation care visit involving evaluation and management (E/M). The visit involves a high level of medical decision making or the…580$1$1.8K
    99350The provider sees an established patient for a home or residence visit involving evaluation and management (E/M). The visit involves high medical decision making or the provider spends at least 60…40$30$1.2K
    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…150$10$890
    99349The provider sees an established patient for a home or residence visit involving evaluation and management (E/M). The visit involves moderate medical decision making or the provider spends at least…70$10$590
    99348The provider sees an established patient for a home or residence visit involving evaluation and management (E/M). The visit involves low medical decision making or the provider spends at least 30…50$1$150

    Showing 1–10 of 14

    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

    14 rows

    CPT/HCPCS CodeDescriptionRankProvider CountMedian ClaimsAvg PaidAverage Revenue
    99233The provider sees a patient for a subsequent hospital inpatient or observation care visit involving evaluation and management (E/M). The visit involves a high level of medical decision making or the…1,3002,670540$40$183.4K
    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…9,53313,300640$40$169.6K
    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…2,3322,840490$40$139.6K
    99223The provider sees a patient for an initial hospital inpatient or observation care visit involving evaluation and management (E/M). The visit involves a high level of medical decision making or the…2,1862,730190$90$100.3K
    99350The provider sees an established patient for a home or residence visit involving evaluation and management (E/M). The visit involves high medical decision making or the provider spends at least 60…128160180$70$74.5K
    99239The provider sees a patient for hospital inpatient or observation discharge day management, involving evaluation and management (E/M). The provider spends more than 30 minutes on the service on the…810910160$50$73.4K
    99309The provider sees a patient for a subsequent nursing facility care visit involving evaluation and management (E/M). The visit involves a moderate level of medical decision making or the provider…1561,000440$30$72K
    99310The provider sees a patient for a subsequent nursing facility care visit involving evaluation and management (E/M). The visit involves a high level of medical decision making or the provider spends…78410240$40$71.7K
    99308The provider sees a patient for a subsequent nursing facility care visit involving evaluation and management (E/M). The visit involves a low level of medical decision making and/or the provider…3851,150400$20$42K
    99349The provider sees an established patient for a home or residence visit involving evaluation and management (E/M). The visit involves moderate medical decision making or the provider spends at least…235320180$40$38.5K

    Showing 1–10 of 14

    Related Providers

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

    ProviderStateTaxonomyMedicare RevenueMedicaid Revenue
    Harbinder BrarCAMaternal & Fetal Medicine Physician$0$31.3M
    Geoffrey TrenkleCAFacial Plastic Surgery Physician$517.4K$6.5M
    Hosea BrownCAAllergy Physician$71.7K$6.6M
    Homayoun TabandehCAOphthalmology Physician$5.1M$6.8K
    Mark CarmichaelCAHematology & Oncology Physician$3.1M$0
    Clement ChanCARetina Specialist (Ophthalmology) Physician$2.9M$0
    Navid EzraCADermatology Physician$1.8M$975.2K
    Steven LinCARetina Specialist (Ophthalmology) Physician$2.5M$0
    Andro SharobiemCAInternal Medicine Physician$2.1M$0
    Ari KaterelosGURadiation Oncology Physician$2.1M$0

    Nearby Providers

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

    ProviderStateTaxonomyMedicare RevenueMedicaid Revenue
    Karl WeingartenCAVascular & Interventional Radiology Physician$2.1M$796.3K
    Brian MontgomeryCAPhysician Assistant$1.5M$0
    Rattner Vascular Medical Center Asc LLCCAAmbulatory Surgical Clinic/Center$401.8K$670.4K
    Rmc Surgery Center, LLCCAAmbulatory Surgical Clinic/Center$635.1K$44.5K
    Babak ZamiriCASpecialist$592.7K$0
    Niraj ParekhCAInterventional Cardiology Physician$533K$0
    Danh NguyenCADiagnostic Radiology Physician$505.3K$0
    Ray GlendrangeCAOphthalmology Physician$288.5K$0
    Riverside Clinical Laboratory IncCAClinical Medical Laboratory$150K$34.3K
    Aimee FrenchCACritical Care Medicine (Internal Medicine) Physician$140.7K$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
    Derek Nguyen — 4 of 25 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
    0 of 3 years billed far more than typical (above p95)
    p5–p95 (all providers)p25–p75MedianThis providerOutlier
    Claims Volume vs. California Distribution
    Derek Nguyen — 0 of 12 codes billed far more than typical (above p95)
    p5–p95 (all providers)p25–p75MedianThis providerOutlier
    Rank Distribution — California