Physician

Ian Charles Duncan, MD

According to 2025 Medicare claims, Ian Duncan, MD (NPI: 1982866927) practices orthopedic surgery in the Visalia, CA market, with the plurality of this provider's patient population coming from Tulare, CA. This provider's primary affiliated billing organization is ORTHOPAEDIC ASSOC MEDICAL CLINIC, INC. (NPI: 1659473171; TIN: 941720319) and primary practice location at 93277-8309.

Duncan's data goes back to 2015 and runs through 2024. For example, in 2024, this provider had 926 traditional Medicare patients, billed 7,153 HCPCS/CPT codes, and received $1,278,037 in Medicare payments. The top billing code was 99204 (New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more). Part D data shows 551 prescription claims across 244 beneficiaries totaling $3,737 in drug costs, led by Meloxicam (Meloxicam). DME data shows 150 claims. Open Payments data shows 15 records totaling $1,077. 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 moved sharply higher in recent years, from $334,229 to $1,278,037. In contrast, Part D prescription costs started with an early spike, then settled into a lower baseline, moving from $34,936 to $3,737. For DME billing, reported payments moved up and down with repeated peaks and valleys, starting at $10,868 and ending at $254,718.

Part B Carrier Billing Trend

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

Year	Patients	Clm Lines	Payment
2015	572	3,988	$334,229
2016	540	3,532	$301,243
2017	553	2,830	$269,521
2018	554	2,369	$268,100
2019	609	3,439	$343,839
2020	531	3,628	$279,902
2021	541	4,081	$281,984
2022	579	3,503	$304,080
2023	884	20,153	$2,381,335
2024	926	7,153	$1,278,037

Part D Events Trend

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

Year	Patients	Claims	Drug Cost
2015	178	490	$34,936
2016	178	551	$10,694
2017	189	538	$4,207
2018	171	409	$20,276
2019	188	458	$7,831
2020	158	458	$9,318
2021	202	539	$5,486
2022	179	443	$6,712
2023	256	675	$4,959
2024	244	551	$3,737

DME Billing Trend

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

Year	Patients	Claims	Payment
2015	81	86	$18,707
2016	44	56	$8,951
2017	18	29	$2,107
2018	24	35	$11,931
2019	78	78	$24,919
2020	63	81	$21,916
2021	46	46	$20,811
2022	22	22	$2,452
2023	78	79	$22,951
2024	149	150	$242,704

* / # = 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
99204	New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	195	195	$124
99214	Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	315	419	$96
99213	Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more	435	618	$67
20610	Aspiration and/or injection of fluid from large joint	189	257	$54
J3301	Injection, triamcinolone acetonide, not otherwise specified, 10 mg	195	1,205	$1

Top 5 Part D drugs in 2024

By total drug costs.

Drug	Generic	Claims	Total Day Supply	Total Drug Cost
Meloxicam	Meloxicam	274	9,097	$669
Oxycodone-Acetaminophen	Oxycodone Hcl/Acetaminophen	66	364	$610
Celecoxib	Celecoxib	16	540	$378
Hydrocodone-Acetaminophen	Hydrocodone/Acetaminophen	31	158	$297
Tramadol Hcl	Tramadol Hcl	72	456	$213

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
A6023	Collagen dressing, sterile, size more than 48 sq. in., each	N	45	45	$227,197
A6197	Alginate or other fiber gelling dressing, wound cover, sterile, pad size more than 16 sq. in. but less than or equal to 48 sq. in., each dressing	N	19	19	$10,028
L3670	Shoulder orthosis, acromio/clavicular (canvas and webbing type), prefabricated, off-the-shelf	N	29	30	$3,785
A6219	Gauze, non-impregnated, sterile, pad size 16 sq. in. or less, with any size adhesive border, each dressing	N	36	36	$899
E0143	Walker, folding, wheeled, adjustable or fixed height	N	20	20	$795

Open Payments Summary in 2024

Category	Definition	Records	Total Reported Amount	Top Related Entity
General Payments	Reported payment or transfer-of-value amount.	15	$1,077	Zimmer Biomet Holdings, Inc.
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 Ian Charles Duncan, MD?

Tedicare shows public-source Medicare data for Ian Charles Duncan, MD (NPI 1982866927), 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 Ian Charles Duncan, 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 Ian Charles Duncan, MD?

Ian Charles Duncan, MD is linked to ORTHOPAEDIC ASSOC MEDICAL CLINIC, INC. (billing NPI 1659473171) in the available physician profile data.

Does Ian Charles Duncan, MD have Open Payments data?

Ian Charles Duncan, MD has 15 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.