Physician

Timothy Scott Johnston, M.D.

According to 2025 Medicare claims, Timothy Johnston, M.D. (NPI: 1528097847) practices family practice in the Merced, CA market, with the plurality of this provider's patient population coming from Merced, CA. This provider's primary affiliated billing organization is TIMOTHY S. JOHNSTON, M.D. PC (NPI: 1407306665; TIN: 813358539) and primary practice location at 95340-0978. Johnston is affiliated with the Aledade 45 CA CHC MSSP Enhanced (ACO ID: A4542), participating under the MSSP model.

Johnston's data goes back to 2015 and runs through 2024. For example, in 2024, this provider had 2,149 traditional Medicare patients, billed 11,125 HCPCS/CPT codes, and received $648,079 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 8,152 prescription claims across 550 beneficiaries totaling $677,601 in drug costs, led by Eliquis (Apixaban). DME data shows 506 claims. Open Payments data shows 2 records totaling $44. 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 from a lower plateau to a higher plateau, from $227,591 to $648,079. Similarly, Part D prescription costs have moved from a lower plateau to a higher plateau, from $269,652 to $677,601. In contrast, DME billing represents a smaller volume and fell sharply in recent years, from $26,147 to $18,268.

Part B Carrier Billing Trend

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

Year	Patients	Clm Lines	Payment
2015	2,349	6,399	$227,591
2016	2,282	5,845	$261,517
2017	1,936	5,460	$303,068
2018	1,807	8,585	$478,310
2019	1,769	7,313	$394,824
2020	2,016	7,752	$450,675
2021	2,356	10,003	$595,633
2022	2,025	9,835	$587,412
2023	1,962	10,344	$618,484
2024	2,149	11,125	$648,079

Part D Events Trend

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

Year	Patients	Claims	Drug Cost
2015	354	5,789	$269,652
2016	440	6,977	$310,229
2017	552	7,425	$286,181
2018	616	9,175	$448,785
2019	631	9,157	$562,972
2020	772	10,668	$696,019
2021	841	10,963	$767,341
2022	867	11,191	$667,604
2023	714	9,241	$812,344
2024	550	8,152	$677,601

DME Billing Trend

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

Year	Patients	Claims	Payment
2015	95	390	$26,284
2016	110	509	$18,971
2017	264	993	$28,081
2018	389	1,312	$28,767
2019	274	1,080	$33,672
2020	232	1,318	$42,792
2021	214	884	$33,249
2022	172	827	$28,337
2023	150	869	$30,736
2024	65	506	$17,506

* / # = 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	608	1,103	$88
99309	Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes	331	1,357	$77
99213	Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more	956	2,839	$61
77085	Dxa bone density measurement of hip, pelvis, spine including spine fracture assessment	743	743	$55
77089	Calculation of trabecular bone score (tbs) using imaging data with interpretation and report on fracture risk	320	320	$30

Top 5 Part D drugs in 2024

By total drug costs.

Drug	Generic	Claims	Total Day Supply	Total Drug Cost
Eliquis	Apixaban	233	5,068	$99,322
Invega Sustenna	Paliperidone Palmitate	16	456	$51,470
Ozempic	Semaglutide	35	980	$33,545
Tivicay	Dolutegravir Sodium	13	310	$31,149
Xarelto	Rivaroxaban	67	1,501	$28,618

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
B4154	Enteral formula, nutritionally complete, for special metabolic needs, excludes inherited disease of metabolism, includes altered composition of proteins, fats, carbohydrates, vitamins and/or minerals, may include fiber, administered through an enteral feeding tube, 100 calories = 1 unit	N	N/R	12	$3,797
K0001	Standard wheelchair	Y	38	216	$3,575
E0260	Hospital bed, semi-electric (head and foot adjustment), with any type side rails, with mattress	Y	16	64	$2,989
E0630	Patient lift, hydraulic or mechanical, includes any seat, sling, strap(s) or pad(s)	Y	N/R	45	$1,893
J7606	Formoterol fumarate, inhalation solution, fda approved final product, non-compounded, administered through dme, unit dose form, 20 micrograms	N	N/R	13	$1,842

Open Payments Summary in 2024

Category	Definition	Records	Total Reported Amount	Top Related Entity
General Payments	Reported payment or transfer-of-value amount.	2	$44	Hologic Sales and Service, LLC
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 Timothy Scott Johnston, M.D.?

Tedicare shows public-source Medicare data for Timothy Scott Johnston, M.D. (NPI 1528097847), 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 Timothy Scott Johnston, M.D. have ACO affiliation data?

Timothy Scott Johnston, M.D. is shown with ACO affiliation data for Aledade 45 CA CHC MSSP Enhanced (MSSP, ACO ID A4542).

What billing organization is linked to Timothy Scott Johnston, M.D.?

Timothy Scott Johnston, M.D. is linked to TIMOTHY S. JOHNSTON, M.D. PC (billing NPI 1407306665) in the available physician profile data.

Does Timothy Scott Johnston, M.D. have Open Payments data?

Timothy Scott Johnston, M.D. has 2 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.