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 Maine for Medicaid) — rank 1 means the highest claims volume for that code.

Why is the Medicaid comparison limited to Maine 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. Maine (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.

Karen Brennan (NPI 1023162328)

Field	Value
Entity Type	Individual
Organization	Karen Brennan
Address	6 Glen Cove Dr
City	Rockport
State	ME
ZIP	04856
Taxonomy	Registered Nurse
NPI Enumerated	January 23, 2007

Payer Source	Total Paid
Medicare	$30.8K
Medicaid	$0

Medicare: Complete Services Breakdown

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

4 rows

CPT/HCPCS Code	Description	Claims	Avg Paid	Revenue
00811	The provider performs anesthesia services for a patient undergoing an unspecified lower intestinal endoscopic procedure where the surgical provider introduces an endoscope into the intestines up to…	130	$120	$15K
00812	The provider performs anesthesia services for a patient undergoing a screening colonoscopy during which the surgical provider introduces an endoscope into the intestines below the duodenum, the part…	80	$110	$8.3K
00731	The anesthesia provider performs anesthesia services for an unspecified type of upper gastrointestinal endoscopic procedure during which another provider introduces the endoscope to but not beyond…	50	$110	$5.7K
00813	The anesthesia provider performs anesthesia services for a patient undergoing both upper and lower intestinal endoscopy where the surgical provider introduces an endoscope into the intestines above…	10	$140	$2K

Medicare: Competitive Analysis & Benchmarks

How this provider's Medicare billing volume and revenue compare to other providers nationally and within its state, across 4 CPT/HCPCS codes.

View: State1 / 2

Claims Volume vs. Maine Distribution

Karen Brennan — 2 of 4 codes billed far more than typical (above p95)

p5–p95 (all providers)p25–p75MedianThis providerOutlier

Rank Distribution — Maine

Full comparison — all codes billed, vs. state median

4 rows

CPT/HCPCS Code	Rank	Provider Count	Median Claims	Avg Paid	Average Revenue
00811	4	200	20	$70	$1.9K
00812	5	110	20	$70	$1.8K
00731	15	250	20	$70	$1.6K
00813	32	70	10	$90	$1.5K

Related Providers

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

Provider	State	Taxonomy	Medicare Revenue	Medicaid Revenue
Timothy Ayers	MA	Anesthesiology Physician	$126K	$0
Vincent Mangili	MA	Anesthesiology Physician	$107.9K	$0
Glenn Colassi	MA	Certified Registered Nurse Anesthetist	$21.4K	$70.8K
Arturo Dinicola	PA	Anesthesiology Physician	$91.9K	$0
Samir Patel	MA	Anesthesiology Physician	$87.2K	$0
Joseph Scordino	ME	Orthopaedic Surgery Physician	$73.6K	$0
Alexandra Adler	MA	Pain Medicine (Anesthesiology) Physician	$58K	$1.3K
Christine Curran-haver	MA	Anesthesiology Physician	$59K	$0
John Mashikian	MA	Anesthesiology Physician	$56.8K	$0
Kue Choi	RI	Anesthesiology Physician	$55.1K	$0

Nearby Providers

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

Provider	State	Taxonomy	Medicare Revenue	Medicaid Revenue
Bfli	ME	Intellectual and/or Developmental Disabilities Community Based Residential Treatment Facility	$0	$39.6M
Mainehealth	ME	General Acute Care Hospital	$0	$31.5M
Knox County Homeless Coalition	ME	Case Management Agency	$0	$4.5M
Mainehealth	ME	General Acute Care Hospital	$0	$4.3M
Penobscot Bay Physicians & Associates	ME	Multi-Specialty Clinic/Center	$0	$414.6K
John Mamon	ME	Diagnostic Radiology Physician	$105.3K	$194.5K
Kerry Lavigne	ME	MOHS-Micrographic Surgery Physician	$268K	$0
Robert Fisher	ME	Urology Physician	$225.8K	$0
Nancy Coyne	ME	Physical Therapist	$174.3K	$0
Eric Elton	ME	Gastroenterology Physician	$92.5K	$730

Karen Brennan — Billing Profile & Reimbursement Data

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Karen Brennan — Billing Profile & Reimbursement Data

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Medicare: Total Revenue Breakdown by CPT/HCPCS Code

Medicare: Complete Services Breakdown

Medicare: Competitive Analysis & Benchmarks

Related Providers

Nearby Providers

Frequently Asked Questions

References