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

Why is the Medicaid comparison limited to North Dakota 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. North Dakota (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.

Michael Greenwood (NPI 1306124599)

Field	Value
Entity Type	Individual
Organization	Michael Greenwood
Address	354 23rd Ave E
City	West Fargo
State	ND
ZIP	58078
Taxonomy	Ophthalmology Physician
NPI Enumerated	July 22, 2011

Payer Source	Total Paid
Medicare	$530.7K
Medicaid	$0

Key Findings

This provider is effectively single‑payer in our dataset: Total Medicare revenue is $530.7K while there is no Medicaid billing on file, indicating Medicare dominates clinical reimbursement and payer mix for this NPI. The absence of Medicaid billing suggests analyses of in‑state public payer competition or access will not be informative for this entity.

Revenue is highly concentrated in a narrow set of cataract‑related procedures: the top three Medicare codes (66984, 66821, 66982) account for 77.4% of the provider's total Medicare revenue. Those three codes individually contributed $269K (50.7%), $90.5K (17.0%), and $51.2K (9.6%) respectively, signaling a practice driven by cataract surgery and immediate postoperative management.

The procedural mix points to a surgical ophthalmology practice focused on cataract operations and lens care: 66984 (standard extracapsular cataract extraction with IOL) and 66982 (complex extracapsular extraction with IOL) are the top revenue drivers, and 66821 (laser posterior capsulotomy) is the second largest revenue contributor. High utilization of biometry (92136: 927 claims, $28 avg paid/claim, $26K revenue, 4.9%) supports the view that preoperative IOL calculations and cataract workflows are core services.

Competitive standing across cataract codes is above median but not market‑dominating: 66984 ranks #2255 of 15965 nationally (86th percentile) and is described as typical/unremarkable volume; 66821 ranks #563 of 10087 (94th percentile) and 66982 ranks #289 of 4580 (94th percentile), both indicating higher‑than‑average procedural volumes relative to national peers without signaling exclusive market dominance.

The provider offers higher‑complexity anterior segment services beyond routine cataract care: 65756 (full corneal transplant) generated $35.9K (6.8% of Medicare revenue) and ranks #69 of 567 (87th percentile), reflecting meaningful corneal surgery capability in addition to lens procedures. This diversification into corneal transplant activity positions the practice to manage more complex anterior segment pathology.

There is evidence of glaucoma‑related procedures but with mixed volume: 66991 (IOL insertion with aqueous drainage device) produced $23.1K (4.3%) and ranks #286 of 1445 (80th percentile), whereas canaloplasty/MIGS code 66174 produced $6.7K (1.3%) and ranks in the low‑20s percentile nationally, and 65855 ranks in the 4th percentile. These patterns suggest the provider performs some glaucoma procedures, concentrated in certain device/combined surgery codes, but is not broadly high‑volume across all glaucoma interventions.

92136 stands out as a statistical outlier in diagnostic throughput: it ranks #132 of 8731 nationally (98th percentile) and is labeled an "extreme outlier, far above typical national volume," with 927 claims and $26K revenue. That unusually high utilization of biometry supports the interpretation of high cataract surgical throughput and repeated preoperative measurements relative to peers.

The NPI tenure indicates long‑standing Medicare participation: the provider was enumerated 2011‑07‑22 (~15 years ago). Combined with lifetime Medicare revenue of $530.7K, this suggests a modest‑sized, established ophthalmology practice with a surgical cataract and corneal focus rather than a large multispecialty or high‑volume national center.

Medicare: Complete Services Breakdown

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

10 rows

CPT/HCPCS Code	Description	Claims	Avg Paid	Revenue
66984	The provider inserts an artificial lens after removing an extracapsular cataract by aspiration or use of ultrasonic waves. This procedure is done without the use of an endoscopic laser probe to…	790	$340	$269K
66821	The provider removes the haziness from the capsule of the eye using a laser for a patient with a secondary membranous cataract.	270	$340	$90.5K
66982	The provider inserts an intraocular lens prosthesis after extracapsular cataract extraction using complex techniques and devices. He may perform this by means of an iris expansion device, providing…	110	$460	$51.2K
65756	During this procedure, the provider performs a complete corneal transplant to replace a damaged corneal endothelium.	40	$900	$35.9K
92136	The provider uses a noninvasive method to measure the patient’s eye or eyes to get information that the provider then uses to calculate the appropriate power for an intraocular lens (IOL). Selecting…	930	$30	$26K
66991	The provider inserts an intraocular lens prosthesis during the same session as extracapsular cataract extraction. The provider also inserts one or more anterior segment aqueous drainage devices in…	50	$430	$23.1K
65400	In this procedure, the provider excises a thin layer from the surface of the cornea, the front portion of the eye that focuses light on the lens, to remove a mass, scar tissue, or other lesion,…	30	$460	$13.7K
65820	The provider incises the limbus to improve drainage of aqueous humor in the eye. This procedure is typically performed on children, usually to treat congenital glaucoma.	20	$540	$11.3K
66174	The provider expands the aqueous outflow (drainage) canal of the eye to help relieve pressure in the eye. The procedure does not include leaving a device or stent in place.	20	$340	$6.7K
65855	In 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.	10	$260	$3.6K

Medicare: Competitive Analysis & Benchmarks

How this provider's Medicare billing volume and revenue compare to other providers nationally and within its state, across 10 CPT/HCPCS codes.

View: State1 / 2

Claims Volume vs. North Dakota Distribution

Michael Greenwood — 2 of 10 codes billed far more than typical (above p95)

p5–p95 (all providers)p25–p75MedianThis providerOutlier

Rank Distribution — North Dakota

Full comparison — all codes billed, vs. state median

10 rows

CPT/HCPCS Code	Rank	Provider Count	Median Claims	Avg Paid	Average Revenue
66984	6	100	50	$350	$61.2K
66991	2	10	30	$1,320	$50.1K
65756	1	10	30	$1,130	$34K
65820	3	10	20	$1,020	$30.7K
66982	2	20	40	$590	$29.4K
66821	4	30	80	$230	$27.3K
66174	2	10	20	$810	$17.1K
65400	1	10	30	$500	$14.5K
92136	2	30	240	$30	$8.3K
65855	8	10	20	$130	$3.3K

Related Providers

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

Provider	State	Taxonomy	Medicare Revenue	Medicaid Revenue
John Berdahl	SD	Ophthalmology Physician	$664K	$0
Brandon Baartman	NE	Ophthalmology Physician	$619K	$0
Russell Swan	MT	Ophthalmology Physician	$560K	$0
Vance Thompson	SD	Ophthalmology Physician	$514.1K	$0
Deborah Ristvedt	MN	Ophthalmology Physician	$507.8K	$0
John Stephens	FL	Ophthalmology Physician	$443K	$0
Spenser Morton	NE	Ophthalmology Physician	$375.7K	$0
Cullen Ryburn	CO	Ophthalmology Physician	$312.8K	$0
Daniel Terveen	SD	Ophthalmology Physician	$303.2K	$0
Brent Kramer	SD	Ophthalmology Physician	$207.9K	$0

Nearby Providers

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

Provider	State	Taxonomy	Medicare Revenue	Medicaid Revenue
Sanford Medical Center Fargo	ND	Family Medicine Physician	$0	$75.9M
North Dakota Autism Center, Inc	ND	Community/Behavioral Health Agency	$0	$5.7M
West Fargo Public School District 6	ND	Home Health Registered Nurse	$0	$2.6M
Fm Endoscopy Center LLC	ND	Ambulatory Surgical Clinic/Center	$2.5M	$0
Innovis Health, LLC	ND	Multi-Specialty Clinic/Center	$0	$235K
Alex Wohl	ND	Physical Therapist	$222.1K	$0
Optimal Chiropractic PLLC	ND	Chiropractor	$0	$221K
Kci Usa, Inc.	ND	Durable Medical Equipment & Medical Supplies	$0	$185.9K
Innovis Health LLC	ND	Family Medicine Physician	$0	$157.3K
Matthew Friederichs	ND	Sports Medicine (Orthopaedic Surgery) Physician	$126K	$0

Michael Greenwood — 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