Physician

Christopher Aaron Keen, MD

According to 2025 Medicare claims, Christopher Keen, MD (NPI: 1063629012) practices orthopedic surgery in the Homosassa Springs, FL market, with the plurality of this provider's patient population coming from Citrus, FL. This provider's primary affiliated billing organization is THE ORTHOPAEDIC INSTITUTE PA (NPI: 1740373547; TIN: 593379430) and primary practice location at 34461-6004.

Keen's data goes back to 2015 and runs through 2024. For example, in 2024, this provider had 1,805 traditional Medicare patients, billed 50,915 HCPCS/CPT codes, and received $686,548 in Medicare payments. The top billing code was 99214 (Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more). Part D data shows 1,507 prescription claims across 944 beneficiaries totaling $13,191 in drug costs, led by Oxycodone-Acetaminophen (Oxycodone Hcl/Acetaminophen). DME data shows 163 claims. Open Payments data shows 9 records totaling $401. You can download detailed data with all billing codes (2015-2024). For more recent data, please contact us.

Over the past 10 years, this provider's Medicare Part B carrier billing has changed little. Concurrently, Part D prescription costs have moved up and down with repeated peaks and valleys, starting at $27,360 and ending at $13,191. For DME billing, reported payments moved sharply higher in recent years, from $1,126 to $5,542.

Part B Carrier Billing Trend

Medicare payment trend, with N of patients and claim lines in the table.

Year	Patients	Clm Lines	Payment
2015	1,910	8,260	$626,099
2016	2,032	9,715	$688,535
2017	2,152	10,672	$731,351
2018	2,331	11,959	$911,867
2019	2,029	10,658	$761,726
2020	1,562	8,144	$628,474
2021	1,932	12,556	$784,354
2022	1,990	11,992	$740,896
2023	2,174	17,246	$802,246
2024	1,805	50,915	$686,548

Part D Events Trend

Drug cost trend, with N of patients and prescription claims in the table.

Year	Patients	Claims	Drug Cost
2015	562	1,173	$27,360
2016	590	1,122	$24,411
2017	620	1,085	$15,872
2018	659	1,067	$15,068
2019	660	1,118	$14,330
2020	532	928	$12,492
2021	943	1,576	$16,916
2022	983	1,618	$21,579
2023	1,033	1,625	$17,193
2024	944	1,507	$13,191

DME Billing Trend

Medicare payment trend, with N of patients and DME claim records in the table.

Year	Patients	Claims	Payment
2015	95	98	$4,161
2016	99	100	$4,777
2017	104	107	$5,668
2018	167	173	$9,732
2019	197	220	$13,252
2020	131	132	$7,739
2021	143	165	$9,569
2022	125	127	$8,810
2023	145	156	$14,810
2024	162	163	$13,977

* / # = suppressed by CMS; 0 = reported zero; N/R = not reported or blank.

Top 5 Part B carrier billing codes in 2024

By total payments.

Code	Description	Patients	Clm Lines	Total Payment
99214	Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	951	1,365	$93
99213	Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more	625	779	$64
20610	Aspiration and/or injection of fluid from large joint	515	850	$55
73030	X-ray of shoulder, minimum of 2 views	356	545	$25
J1010	Injection, methylprednisolone acetate, 1 mg	440	37,790	$0

Top 5 Part D drugs in 2024

By total drug costs.

Drug	Generic	Claims	Total Day Supply	Total Drug Cost
Oxycodone-Acetaminophen	Oxycodone Hcl/Acetaminophen	362	2,423	$3,924
Hydrocodone-Acetaminophen	Hydrocodone/Acetaminophen	187	1,221	$1,508
Celecoxib	Celecoxib	32	1,410	$1,339
Doxycycline Monohydrate	Doxycycline Monohydrate	13	438	$1,066
Tramadol Hcl	Tramadol Hcl	369	2,390	$1,055

Top 5 DME services in 2024

By Total Medicare Payment Amount.

HCPCS Code	HCPCS Description	Supplier Rental Indicator	Total Supplier Beneficiaries	Total Supplier Claims	Total Medicare Payment Amount
L3670	Shoulder orthosis, acromio/clavicular (canvas and webbing type), prefabricated, off-the-shelf	N	36	36	$3,908
L3908	Wrist hand orthosis, wrist extension control cock-up, non molded, prefabricated, off-the-shelf	N	63	63	$3,128
L3924	Hand finger orthosis, without joints, may include soft interface, straps, prefabricated, off-the-shelf	N	34	35	$2,953
L3913	Hand finger orthosis, without joints, may include soft interface, straps, custom fabricated, includes fitting and adjustment	N	11	11	$2,514
L3660	Shoulder orthosis, figure of eight design abduction restrainer, canvas and webbing, prefabricated, off-the-shelf	N	18	18	$1,475

Open Payments Summary in 2024

Category	Definition	Records	Total Reported Amount	Top Related Entity
General Payments	Reported payment or transfer-of-value amount.	9	$401	Stryker Corporation
Research Payments	Reported research-related payment or transfer-of-value amount.	0	$0	N/R
Ownership / Investment Interests	Reported value of ownership or investment interests.	0	$0	N/R

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FAQ

What Medicare data is available for Christopher Aaron Keen, MD?

Tedicare shows public-source Medicare data for Christopher Aaron Keen, MD (NPI 1063629012), including provider identity, specialty, market context, Medicare Part B activity, Part D prescribing, DME records, Open Payments where available, billing organization details, and ACO affiliation signals where available. Profile data covers 2015-2024, with current attribution based on 2025 claims where available.

Does Christopher Aaron Keen, MD have ACO affiliation data?

No ACO affiliation record is shown in the available Tedicare data for this profile.

What billing organization is linked to Christopher Aaron Keen, MD?

Christopher Aaron Keen, MD is linked to THE ORTHOPAEDIC INSTITUTE PA (billing NPI 1740373547) in the available physician profile data.

Does Christopher Aaron Keen, MD have Open Payments data?

Christopher Aaron Keen, MD has 9 connected Open Payments records in the available 2024 summary data.

Can I download physician-level Medicare data from Tedicare?

Yes. Tedicare provides sample physician export data and paid custom physician data exports for research, planning, outreach, and market analysis. Exports can include physician profile fields, market and specialty context, billing organization details, ACO affiliation signals where available, and Medicare utilization data.