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    v1.0.28
    OpenPayerNPI Medicare & MedicaidErrol Grannum
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    Errol Grannum — Billing Profile & Reimbursement Data

    NPI 1508897935 · Mcallen, TX · Ophthalmology Physician

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    Errol Grannum is a ophthalmology physician provider located in Mcallen, Texas. This profile covers 12 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
    OrganizationErrol Grannum
    Address1910 S 1st St
    CityMcallen
    StateTX
    ZIP78503
    TaxonomyOphthalmology Physician
    NPI EnumeratedJuly 5, 2006

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

    Payer SourceTotal Paid
    Medicare$77.3K
    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.

    12 rows

    CPT/HCPCS CodeDescriptionClaimsAvg PaidRevenue
    92012For this CPT code, an Ophthalmologist sees an established patient for an intermediate level eye examination. Generally, a patient is considered to be "established" if the same physician, or any…660$60$40.9K
    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…80$100$8.6K
    92083The provider may use one or more methods to determine the extent of a patient's visual field of one or both eyes; he interprets the results and prepares a report. Report this code for an extended…170$40$7.4K
    65855In this procedure, the provider uses a laser to burn the trabecular meshwork, the tissue of mesh where the iris meets the sclera, to drain aqueous humor from the anterior chamber and treat glaucoma.30$160$4.9K
    66761The provider uses a laser beam to create a small hole in the iris that equalizes the intraocular pressure between anterior and posterior chamber of the eyes. Report this code for single session of…20$220$4.4K
    92133The provider performs computerized diagnostic imaging of the optic nerve in the posterior segment (back part) of the eye, interprets the data, and provides a report. The service may be on one or both…140$20$3.4K
    92020The provider examines the angle of the anterior chamber of the eye (the angle where the iris and cornea meet) using a special lens (goniolens) and slit–lamp or operating microscope to diagnose and…150$20$2.8K
    92145The provider measures the difference in inward and outward movement of the cornea when he applies metered air impulses on the cornea of one or both eyes. He then interprets the data and completes a…330$10$2.7K
    92250Code 92250 describes the taking of fundus photographs, that is, photographs of the posterior segment of the inner aspect of the eye, to document alterations in the optic nerve head, retinal vessels,…50$30$1.3K
    67820The provider removes deviated or abnormal eyelashes, a condition known as trichiasis. He uses forceps to extract the unwanted lashes that cause eye irritation.30$10$410

    Showing 1–10 of 12

    Medicare: Competitive Analysis & Benchmarks

    How this provider's Medicare billing volume and revenue compare to other providers nationally and within its state, across 12 CPT/HCPCS codes.

    View: State1 / 2

    Full comparison — all codes billed, vs. state median

    12 rows

    CPT/HCPCS CodeRankProvider CountMedian ClaimsAvg PaidAverage Revenue
    92012791,69080$60$10.9K
    658557115030$160$7.1K
    66761182020$190$5.7K
    992042,70316,38030$110$5.6K
    920832561,59050$40$4.1K
    9220113514060$20$4.1K
    922509291,84050$30$3K
    921333121,47050$20$2.4K
    9214594060$10$2.4K
    920206342040$20$1.8K

    Showing 1–10 of 12

    Related Providers

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

    ProviderStateTaxonomyMedicare RevenueMedicaid Revenue
    Enrique CalderonNCOphthalmology Physician$713K$0
    Alexander SudarshanTXOphthalmology Physician$142.5K$7.2K
    Tam DangVAOphthalmology Physician$62.8K$0

    Nearby Providers

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

    ProviderStateTaxonomyMedicare RevenueMedicaid Revenue
    Volver A Casa Home Health Services, Inc.TXPersonal Care Attendant$0$27M
    Columbia Rio Grande Healthcare, L.P.TXGeneral Acute Care Hospital$0$17.7M
    Med Care Emergency Medical Services IncTXAmbulance$1.2M$10.9M
    Omar GonzalezTXEmergency Medicine Physician$2M$0
    Billie MarekTXMedical Oncology Physician$1.6M$0
    Abdulrahman RagehTXOphthalmology Physician$956.9K$429.9K
    Endoscopy Center At Ridge Plaza LPTXAmbulatory Surgical Clinic/Center$187.9K$564.3K
    Sanjeeb BhandariTXOphthalmology Physician$678.1K$0
    Javier LealTXPhysical Therapist$478.5K$0
    Nyan PhyoTXNephrology Physician$350K$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. Texas Distribution
    Errol Grannum — 1 of 12 codes billed far more than typical (above p95)
    p5–p95 (all providers)p25–p75MedianThis providerOutlier
    Rank Distribution — Texas