Why are Medicare and Medicaid shown separately instead of combined?

They come from two different CMS data sources with no shared claim identifier, so they can't be reconciled into one number without double-counting or guessing. Every table and chart on this page keeps them fully separate.

Why is there no private/commercial revenue figure?

Private and commercial payer data comes from Transparency in Coverage files, which only publish negotiated rates — not claims or utilization volume. Without a volume figure, no revenue number can be computed for any provider from that data.

What does "Rank" mean in the Competitive Analysis & Benchmarks tables?

For a given CPT/HCPCS code, it's this provider's position by claims volume among all providers billing that same code at that geography level (State, National, or Virginia for Medicaid) — rank 1 means the highest claims volume for that code.

Why is the Medicaid comparison limited to Virginia only?

Medicaid is administered per-state with no single national fee schedule, so a state or national comparison the way Medicare has one isn't available. Virginia (this provider's own state) is the only grouping that's conceptually meaningful.

Why are the numbers rounded to the nearest 10?

To avoid implying more precision than the underlying data supports at a single-provider level. Ratios are kept precise since they're a relative comparison, not a volume or dollar figure.

How current is this data?

The Medicare and Medicaid tables are both single current snapshots, not refreshed on a recurring schedule yet.

Robert Brennan (NPI 1659355170)

Field	Value
Entity Type	Individual
Organization	Robert Brennan
Address	2215 Landover Pl
City	Lynchburg
State	VA
ZIP	24501
Taxonomy	Infectious Disease Physician
NPI Enumerated	November 30, 2005

Payer Source	Total Paid
Medicare	$15.9M
Medicaid	$0

Key Findings

This provider’s Medicare billing is sizable and effectively single‑payer: total Medicare revenue is $15.9M and there is no Medicaid billing on file, so the practice’s public-payor footprint is concentrated entirely in Medicare. The absence of Medicaid activity indicates this profile should be interpreted as a Medicare-centric operation rather than a mixed Medicaid/Medicare practice.

Revenue concentration is high at the code level: the precomputed top-3 Medicare codes by revenue account for 35.1% of this provider’s total Medicare revenue. The three leading codes are J0897 ($2.1M, 13.1%), J3380 ($2M, 12.3%), and J2357 ($1.6M, 9.8%), which together drive more than a third of the Medicare dollars reported for this NPI.

The code mix indicates a specialty infusion/injectable biologics operation rather than a general ambulatory practice: leading codes include J0897 (denosumab), J3380 (vedolizumab), and J2357 (omalizumab), plus multiple other high-volume biologic and infusion codes (for example, J3245, J2350, J0517, J2182). Frequent use of infusion administration codes such as 96365 and the modifier/add-on 96415 (both flagged as extreme outliers) reinforces that the practice administers large volumes of clinic- or office-based IV/subcutaneous biologic therapies.

The provider is a dominant national outlier for several high-revenue biologics: J0897 ranks #1 of 10057 providers nationally (100th percentile; extreme outlier) and J3380 ranks #1 of 620 providers nationally (100th percentile; extreme outlier), while J2357 also ranks #1 of 581 providers nationally (100th percentile; extreme outlier). These #1 rankings indicate this NPI bills far above typical national volumes for multiple specific biologic drugs, positioning the provider as a major national billing outlier for those therapies.

Beyond the top three, the practice shows repeated above‑typical volume for many biologic drugs: examples include J0517 ($1.1M, 6.6%; ranks #1 of 200, 100th percentile; extreme outlier), J0485 ($720.1K, 4.5%; ranks #1 of 20, 100th percentile; extreme outlier), and J1745 ($651K, 4.1%; ranks #8 of 1352, 99th percentile; extreme outlier). A mix of extreme outlier and notably-above-typical percentile designations across many J‑codes suggests systematic, high-volume administration of specialty injectables across multiple agents.

Not all codes are unusually large: several oncology/infusion and biologic codes appear at typical or modest percentiles (for example, J2350 ranks #13 of 105, 88th percentile and J9312 ranks #25 of 317, 92th percentile), indicating the provider’s dominance is concentrated in specific drugs rather than across every biologic or infusion CPT/HCPCS line. This pattern suggests focused high-volume prescribing/administration for a subset of agents rather than uniform outlier behavior across the entire infusion/drug portfolio.

Operationally, the presence of large claim counts for low-paid-per-claim codes (for example, J0485 with 240K claims at $3 avg paid/claim, $720.1K revenue) alongside high-paid-per-claim agents (for example, J3245 at $110 avg paid/claim, $1.3M revenue) indicates a mixed-case throughput model combining many low-unit, high-frequency administrations with fewer high-unit, higher-reimbursement drugs. The combination of extremely high claim counts and a range of avg paid/claim values implies substantial patient throughput and logistics to support frequent injections and infusions.

The provider has longstanding enrollment in Medicare, with NPI enumeration dated 2005-11-30 (~21 years ago), which provides a long claims history consistent with the sizable lifetime Medicare revenue reported. That tenure, combined with repeated top-percentile rankings on multiple J‑codes, supports interpretation of this NPI as an established, specialty biologics/infusion practice within the Medicare market.

Medicare: Complete Services Breakdown

The CPT/HCPCS codes generating the most Medicare revenue for this provider.

40 rows

CPT/HCPCS Code	Description	Claims	Avg Paid	Revenue
J0897	Injection, denosumab, 1 mg	115,560	$20	$2.1M
J3380	Injection, vedolizumab, intravenous, 1 mg	115,200	$20	$2M
J2357	Injection, omalizumab, 5 mg	51,840	$30	$1.6M
J3245	Injection, tildrakizumab, 1 mg	12,200	$110	$1.3M
J2350	Injection, ocrelizumab, 1 mg	25,200	$40	$1.1M
J0517	Injection, benralizumab, 1 mg	8,280	$130	$1.1M
J2182	Injection, mepolizumab, 1 mg	36,900	$20	$848.7K
J0129	Injection, 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)	22,530	$30	$743.3K
J0485	Injection, belatacept, 1 mg	240,050	$1	$720.1K
J1745	Injection, infliximab, excludes biosimilar, 10 mg	26,040	$30	$651K

Showing 1–10 of 40

Medicare: Competitive Analysis & Benchmarks

How this provider's Medicare billing volume and revenue compare to other providers nationally and within its state, across 40 CPT/HCPCS codes.

View: State1 / 2

Claims Volume vs. Virginia Distribution

Robert Brennan — 16 of 25 codes billed far more than typical (above p95)

p5–p95 (all providers)p25–p75MedianThis providerOutlier

Rank Distribution — Virginia

Full comparison — all codes billed, vs. state median

40 rows

CPT/HCPCS Code	Rank	Provider Count	Median Claims	Avg Paid	Average Revenue
J2350	2	10	25,200	$40	$1.8M
J3245	2	10	4,700	$110	$728K
J0485	1	10	240,050	$1	$690.9K
J0129	4	30	10,450	$30	$407.3K
J3262	9	20	75,870	$1	$383.3K
J0717	14	30	74,500	$1	$361.7K
J9312	1	10	3,950	$60	$259.5K
J3380	1	20	7,200	$20	$257.9K
J1306	6	10	13,650	$10	$225K
J0517	1	20	1,200	$130	$213K

Showing 1–10 of 40

Related Providers

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

Provider	State	Taxonomy	Medicare Revenue	Medicaid Revenue
Privia Medical Group, LLC	VA	Internal Medicine Physician	$0	$81.2M
Centra Medical Group, LLC	VA	Family Medicine Physician	$0	$60.1M
Columbus Radiology Corp	OH	Diagnostic Radiology Physician	$0	$49.9M
Adebowale Prest	MD	Family Medicine Physician	$2.8M	$0
Jong An	VA	Hematology & Oncology Physician	$2.4M	$0
Bluestone Health Association, Inc.	WV	Federally Qualified Health Center (FQHC)	$0	$1.9M
Enrico Giangeruso	VA	Anatomic Pathology & Clinical Pathology Physician	$1.4M	$0
Glenda Mccarter	MD	Nurse Practitioner	$1.3M	$0
Salman Mufti	VA	Diagnostic Radiology Physician	$1.2M	$0
Reema Munir	CA	Diagnostic Radiology Physician	$949.4K	$0

Nearby Providers

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

Provider	State	Taxonomy	Medicare Revenue	Medicaid Revenue
Lutheran Family Services Of Virginia, Inc.	VA	Intellectual and/or Developmental Disabilities Community Based Residential Treatment Facility	$0	$194.3M
Horizon Behavioral Health	VA	Community/Behavioral Health Agency	$0	$138.1M
Brightview LLC	VA	Substance Use Disorder Rehabilitation Clinic/Center	$0	$32M
Centra Health Inc	VA	General Acute Care Hospital	$0	$18.5M
Virginia Treatment Center, LLC	VA	Methadone Clinic	$116.5K	$15.9M
Cabaniss Consultants LLC	VA	Developmentally Disabled Services Day Training Agency	$0	$10.9M
Sense Of Security Care, Inc.	VA	Home Health Aide	$0	$9.2M
Surgery Center Of Lynchburg LLC	VA	Ambulatory Surgical Clinic/Center	$4M	$799.8K
Landon Colling	VA	Ophthalmology Physician	$2.8M	$190
Pathology Consultants Of Central Va, Inc	VA	Clinical Medical Laboratory	$696K	$1.6M

Robert Brennan — Billing Profile & Reimbursement Data

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Robert Brennan — Billing Profile & Reimbursement Data

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Key Findings

Medicare: Total Revenue Breakdown by CPT/HCPCS Code

Medicare: Complete Services Breakdown

Medicare: Competitive Analysis & Benchmarks

Related Providers

Nearby Providers

Frequently Asked Questions

References