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    v1.0.28
    OpenPayerNPI Medicare & MedicaidLong Huynh-duc
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    Long Huynh-duc — Billing Profile & Reimbursement Data

    NPI 1447572169 · Greenville, SC · Rheumatology Physician

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    Long Huynh-duc is a rheumatology physician provider located in Greenville, South Carolina. This profile covers 31 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
    OrganizationLong Huynh-duc
    Address50 International Dr Ste 325
    CityGreenville
    StateSC
    ZIP29615
    TaxonomyRheumatology Physician
    NPI EnumeratedFebruary 22, 2010

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

    Payer SourceTotal Paid
    Medicare$3.2M
    Medicaid$0

    Key Findings

    This provider is heavily infusion-focused: the practice’s top revenue drivers are injectable biologics such as J0717 (certolizumab), J0129 (abatacept), and J1602 (golimumab), consistent with a rheumatology infusion/administration service line rather than a visit-driven outpatient clinic. The provider’s lifetime Medicare revenue of $3.2M and the code mix indicate most income is generated from specialty drug administration rather than traditional office evaluation and management encounters.

    Revenue is highly concentrated in a small set of biologic codes: the precomputed top 3 Medicare codes by revenue account for 49.0% of this provider’s total Medicare revenue, led by J0717 ($580.8K, 17.8%), J0129 ($559.4K, 17.2%), and J1602 ($454.5K, 14.0%). This concentration shows the practice’s financial exposure and dependence on a few high-cost injectable therapies.

    Payer mix is effectively single-payer Medicare: total Medicare revenue is $3.2M while there is no Medicaid billing on file, indicating the provider operates without a measurable Medicaid revenue stream and is heavily reliant on Medicare volume and reimbursement policies. Analysts should treat this provider as Medicare-dependent when modeling reimbursement risk or negotiating payer arrangements.

    Operationally, the practice appears equipped for extended infusion services and complex biologic administration: in addition to the top biologics, the provider bills J9312 (rituximab, $434.7K), J1745 (infliximab, $297.5K), and infusion-related chemotherapy administration codes such as 96413 ($87.5K) and 96401 ($45.6K). In contrast, office E/M codes produce a much smaller share of revenue (99214 at $79K, 2.4%; 99213 at $12.6K, 0.4%), reinforcing that drug/infusion administration drives the business model.

    Competitive standing is mixed by code: the provider reports notably above-typical national volume for some infusion biologics (J1602 ranks #58 of 1041, 95th percentile; J1745 ranks #62 of 1352, 95th percentile), while other high-revenue codes are at more typical but still elevated national positions (J0717 ranks #67 of 848, 92th percentile; J0129 ranks #196 of 1221, 84th percentile). These ranks indicate the provider is a major, above-average national participant for certain IV biologics rather than a singular dominant national leader across all rheumatology drugs.

    There are clear statistical outlier signals around infusion/chemotherapy administration: 96413 is labeled an "extreme outlier, far above typical national volume for this code" (ranks #103 of 7514, 99th percentile), and add-on infusion hours 96415 and subcutaneous chemo administration 96401 are at the 98th percentile. These outlier labels suggest the practice operates an infusion capacity and delivers prolonged or frequent infusions at volumes uncommon among peers, which has implications for staffing, accreditation, and supply chain.

    The clinical scope includes bone-health biologics and osteoporosis therapies alongside rheumatologic biologics: the provider bills J0897 (denosumab, $163.1K, 5.0%) and J3111 (romosozumab, $114.2K, 3.5%), with J0897 at an elevated national percentile (87th). This indicates supplemental services for skeletal disease and fracture prevention are part of the service mix rather than purely disease-modifying rheumatology drugs.

    The provider has an established presence with an NPI enumerated 2010-02-22 (~16 years ago), indicating long tenure in the market and likely an established infusion infrastructure and referral relationships. That longevity, combined with the concentrated biologic revenue mix, suggests a stable, mature practice model focused on high-cost injectable therapies under Medicare.

    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.

    31 rows

    CPT/HCPCS CodeDescriptionClaimsAvg PaidRevenue
    J0717Injection, certolizumab pegol, 1 mg (code may be used for medicare when drug administered under the direct supervision of a physician, not for use when drug is self administered)145,200$1$580.8K
    J0129Injection, abatacept, 10 mg (code may be used for medicare when drug administered under the direct supervision of a physician, not for use when drug is self administered)16,950$30$559.4K
    J1602Injection, golimumab, 1 mg, for intravenous use45,450$10$454.5K
    J9312Injection, rituximab, 10 mg6,900$60$434.7K
    J1745Injection, infliximab, excludes biosimilar, 10 mg11,900$30$297.5K
    J3262Injection, tocilizumab, 1 mg40,040$10$200.2K
    J0490Injection, belimumab, 10 mg5,200$40$192.3K
    J0897Injection, denosumab, 1 mg9,060$20$163.1K
    J3111Injection, romosozumab-aqqg, 1 mg14,280$10$114.2K
    96413Chemotherapy is a therapeutic procedure used for the treatment of cancer via the use of chemical agents. These chemical agents (drugs) work on the cancerous cells of the body to destroy them. These…940$90$87.5K

    Showing 1–10 of 31

    Medicare: Competitive Analysis & Benchmarks

    How this provider's Medicare billing volume and revenue compare to other providers nationally and within its state, across 31 CPT/HCPCS codes.

    View: State1 / 2

    Full comparison — all codes billed, vs. state median

    31 rows

    CPT/HCPCS CodeRankProvider CountMedian ClaimsAvg PaidAverage Revenue
    J012913409,640$30$424.2K
    J071722059,200$1$278.4K
    J160244023,560$10$264.5K
    J3262132040,900$1$202.7K
    J93122202,340$60$193.7K
    J04903104,820$40$152K
    J3111164012,390$10$129.4K
    J17454503,250$30$107K
    J0897382502,400$20$91.2K
    992144797,860160$80$23.2K

    Showing 1–10 of 31

    Related Providers

    Other providers that share a Tax Identification Number (TIN) with Long Huynh-duc, ranked by combined Medicare and Medicaid revenue.

    ProviderStateTaxonomyMedicare RevenueMedicaid Revenue
    Richard KimSCRheumatology Physician$3.6M$0
    Suhail KumarSCRheumatology Physician$3.4M$0
    Corey EphrussiSCRheumatology Physician$1.8M$1.2K

    Nearby Providers

    Other providers in the same ZIP code as Long Huynh-duc, ranked by combined Medicare and Medicaid revenue.

    ProviderStateTaxonomyMedicare RevenueMedicaid Revenue
    Childrens Medical CenterSCSpecialist$0$17.1M
    Prisma Health University Medical GroupSCDevelopmental - Behavioral Pediatrics Physician$0$16M
    Agapi Behavioral ConsultantsSCBehavior Analyst$0$15M
    St Francis Hospital, Inc.SCGeneral Acute Care Hospital$0$13M
    Eastside Pediatric Dentistry PASCPediatric Dentistry$0$10M
    Magnolia Medical Group IncSCPhysical Therapist$0$9.9M
    Greenville Health CorporationSCDurable Medical Equipment & Medical Supplies$0$8.9M
    D&s Community Services Sc, LLCSCIntellectual and/or Developmental Disabilities Community Based Residential Treatment Facility$0$8.3M
    Bloom Behavioral Therapy LLCSCMental Health Counselor$0$7.5M
    Prisma Health-upstateSCGeneral Acute Care Hospital$0$6.4M

    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. South Carolina Distribution
    Long Huynh-duc — 4 of 25 codes billed far more than typical (above p95)
    p5–p95 (all providers)p25–p75MedianThis providerOutlier
    Rank Distribution — South Carolina