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    OpenPayerNPI Medicare & MedicaidEmerald O'sullivan-mejia
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    Emerald O'sullivan-mejia — Billing Profile & Reimbursement Data

    NPI 1548461932 · Fredericksburg, VA · Anatomic Pathology & Clinical Pathology Physician

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    Emerald O'sullivan-mejia is a anatomic pathology & clinical pathology physician provider located in Fredericksburg, Virginia. This profile covers 6 Medicare and 21 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
    OrganizationEmerald O'sullivan-mejia
    Address4600 Spotsylvania Pkwy
    CityFredericksburg
    StateVA
    ZIP22408
    TaxonomyAnatomic Pathology & Clinical Pathology Physician
    NPI EnumeratedMay 31, 2007

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

    Payer SourceTotal Paid
    Medicare$178.5K
    Medicaid$110

    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.

    6 rows

    CPT/HCPCS CodeDescriptionClaimsAvg PaidRevenue
    88305The physician, typically a pathologist, performs a level IV examination of a surgical pathology specimen. The examination includes accessioning the specimen into the lab, which involves formally…5,890$30$165K
    88189The clinician, typically a pathologist, interprets flow cytometry results of 16 or more markers.130$70$8.7K
    88342The lab analyst applies an initial single antibody stain on a slide or slides prepared from a single patient specimen, such as tumor tissue. Then a qualified provider, typically a pathologist,…140$30$3.8K
    88374The lab analyst applies a single multiplex in situ hybridization probe stain on a slide or slides prepared from a single patient specimen, such as tumor tissue. The lab analyst processes the slides…50$30$1.5K
    88312The lab analyst performs the technical lab steps to stain a specimen with a special stain. This code applies to Group I for microorganisms. A qualified provider, typically a pathologist, interprets…40$20$820
    88313The lab analyst performs the technical lab steps to stain a specimen for Group II identification, for example an iron stain or trichrome stain. A qualified provider, typically a pathologist,…40$10$320

    Medicare: Competitive Analysis & Benchmarks

    How this provider's Medicare billing volume and revenue compare to other providers nationally and within its state, across 6 CPT/HCPCS codes.

    View: State1 / 2

    Full comparison — all codes billed, vs. state median

    6 rows

    CPT/HCPCS CodeRankProvider CountMedian ClaimsAvg PaidAverage Revenue
    8830510250760$40$55.8K
    88342115210160$50$13K
    881891740110$70$11.7K
    883128212060$50$9.7K
    8831310714060$20$5.2K
    88374810100$40$4.7K

    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.

    21 rows

    CPT/HCPCS CodeDescriptionClaimsAvg PaidRevenue
    80048The lab analyst performs a basic metabolic pane (BMP) test in which he measures the blood level of eight chemicals including total calcium, sodium, potassium, chloride, carbon dioxide, glucose, blood…170$0$0
    80051The lab analyst performs an electrolyte panel; this panel must include measurement of carbon dioxide, chloride, potassium, and sodium.220$0$0
    80053The lab analyst performs a comprehensive metabolic panel, or CMP test in which he measures the blood level of 14 chemicals the code descriptor lists for the panel.530$0$0
    80076The lab analyst performs a hepatic function panel test in which he measures the blood levels of total protein, albumin, alkaline phosphatase, bilirubin, both total and direct, and liver enzymes.90$0$0
    81001Urinalysis is used to detect substances or cellular material in the urine associated with different metabolic and kidney disorders. It is used to detect urinary tract infections (UTI) and other…570$0$0
    81025The lab analyst performs the pregnancy test on a urine specimen using a methodology or kit that the analyst can read visually for a direct readout.80$0$0
    82565The lab analyst measures the amount of creatinine in a patient specimen, typically of blood. Creatinine is the waste material generated by the muscle tissue produced from the breakdown of creatine…220$0$0
    82947The lab analyst performs a test to measure the amount of glucose in a patient's blood using a method other than a reagent strip.220$0$0
    83690The lab analyst measures the amount of lipase enzyme in the patient specimen. Lipase is an enzyme that the pancreas secretes to help in the absorption of fat.300$0$0
    84443The lab analyst performs a test to measure the amount of thyroid–stimulating hormone (TSH), a hormone produced in the pituitary gland that helps regulate thyroid function. The typical specimen is the…20$0$0

    Showing 1–10 of 21

    Medicaid: Competitive Analysis & Benchmarks

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

    Full comparison — all codes billed, vs. Virginia median

    21 rows

    CPT/HCPCS CodeDescriptionRankProvider CountMedian ClaimsAvg PaidAverage Revenue
    80053The lab analyst performs a comprehensive metabolic panel, or CMP test in which he measures the blood level of 14 chemicals the code descriptor lists for the panel.1572305,240$1$93.2K
    80048The lab analyst performs a basic metabolic pane (BMP) test in which he measures the blood level of eight chemicals including total calcium, sodium, potassium, chloride, carbon dioxide, glucose, blood…1391803,920$1$50.3K
    84443The lab analyst performs a test to measure the amount of thyroid–stimulating hormone (TSH), a hormone produced in the pituitary gland that helps regulate thyroid function. The typical specimen is the…1641702,050$10$30.4K
    87040The lab analyst performs a bacterial culture on blood, and isolates and presumptively identifies any bacteria that grow on selected aerobic media. This code also includes work for anaerobic culture,…1071103,240$10$21.9K
    85027The lab analyst performs a blood count on the red and white blood cells and platelets also known as thrombocytes. He also determines the hemoglobin, typically by spectrophotometry, and the…1021702,500$1$16.6K
    84484The lab analyst performs the technical lab test typically using serum, plasma, or whole blood to quantitate troponin. Troponin is a protein labs commonly measure to verify a myocardial infarction and…10312010,020$1$16.4K
    80076The lab analyst performs a hepatic function panel test in which he measures the blood levels of total protein, albumin, alkaline phosphatase, bilirubin, both total and direct, and liver enzymes.94120680$1$12.5K
    81001Urinalysis is used to detect substances or cellular material in the urine associated with different metabolic and kidney disorders. It is used to detect urinary tract infections (UTI) and other…1241804,140$1$9.5K
    86850The lab analyst performs a screening test using patient blood to determine the presence of any antibodies to red blood cells, called RBCs, other than the A and B antigens.841001,470$1$7.1K
    85610Prothrombin time is most commonly measured using the blood plasma. Chemicals like calcium and tissue factor are added to the plasma sample and then the time is noted when the plasma clots. To analyze…1231304,420$1$6.9K

    Showing 1–10 of 21

    Related Providers

    Other providers that share a Tax Identification Number (TIN) with Emerald O'sullivan-mejia, ranked by combined Medicare and Medicaid revenue.

    ProviderStateTaxonomyMedicare RevenueMedicaid Revenue
    Columbus Radiology CorpOHDiagnostic Radiology Physician$0$49.9M
    Theranostix IncMDClinical Medical Laboratory$5.1M$5.3M
    Hooman SaberiniaVAInternal Medicine Physician$9.6M$0
    Arizona Gastrointestinal Associates, PlcAZGastroenterology Physician$0$8.3M
    P4 Clinical LLCNJClinical Medical Laboratory$4.6M$964K
    Michael NagarPAAnatomic Pathology & Clinical Pathology Physician$3.8M$0
    Manan MehtaVAHematology & Oncology Physician$1.5M$0
    Anil Rama RaoAZAnatomic Pathology & Clinical Pathology Physician$1.3M$0
    Kirk LinAZAnatomic Pathology Physician$1.2M$0
    Platinum Pathology, LLCVAClinical Medical Laboratory$961.3K$216.4K

    Nearby Providers

    Other providers in the same ZIP code as Emerald O'sullivan-mejia, ranked by combined Medicare and Medicaid revenue.

    ProviderStateTaxonomyMedicare RevenueMedicaid Revenue
    Compass Counseling Services Of Northern VirginiaVACommunity/Behavioral Health Agency$0$54.4M
    Spotsylvania Medical Center IncVAGeneral Acute Care Hospital$0$31M
    Pinnacle Treatment Centers Va-i, LLCVAMethadone Clinic$152.9K$15.6M
    Assured CorporationVAHome Health Agency$0$12.8M
    Lakshminarayanan NandagopalVAHematology & Oncology Physician$2.9M$0
    Charles MaurerVAHematology & Oncology Physician$2.8M$0
    Bonny MooreVAHematology & Oncology Physician$2.7M$0
    Matthew WhitehurstVAMedical Oncology Physician$2.1M$0
    Sudeep MenacheryVAHematology & Oncology Physician$1.9M$0
    Arijit ChandaVAInterventional Cardiology Physician$571.6K$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. Virginia Distribution
    Emerald O'sullivan-mejia — 1 of 6 codes billed far more than typical (above p95)
    p5–p95 (all providers)p25–p75MedianThis providerOutlier
    Rank Distribution — Virginia
    Medicaid Revenue by Year vs. Virginia Providers
    0 of 1 year billed far more than typical (above p95)
    p5–p95 (all providers)p25–p75MedianThis providerOutlier
    Claims Volume vs. Virginia Distribution
    Emerald O'sullivan-mejia — 0 of 0 codes billed far more than typical (above p95)
    p5–p95 (all providers)p25–p75MedianThis providerOutlier
    Rank Distribution — Virginia