Physician

James Stefan Walker, M.D.

According to 2025 Medicare claims, James Walker, M.D. (NPI: 1932218971) practices family practice in the Corpus Christi, TX market, with the plurality of this provider's patient population coming from Nueces, TX. This provider's primary affiliated billing organization is CORPUS CHRISTI MEDICAL ASSOCIATES, P.A. (NPI: 1164713848; TIN: 451877521) and primary practice location at 78414-3478. Walker is affiliated with the Aledade 158 TX MSSP Enhanced (ACO ID: A5361) and Main Street Rural Health Magnolia ACO LLC (ACO ID: A5400), participating under the MSSP model.

Walker's data goes back to 2015 and runs through 2024. For example, in 2024, this provider had 538 traditional Medicare patients, billed 15,774 HCPCS/CPT codes, and received $322,717 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 8,483 prescription claims across 530 beneficiaries totaling $707,284 in drug costs, led by Jardiance (Empagliflozin). DME data shows 295 claims. Open Payments data shows 66 records totaling $1,102. 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 risen steadily, from $164,039 to $322,717. Similarly, Part D prescription costs have risen steadily, from $455,202 to $707,284. In contrast, DME billing represents a smaller volume and moved up and down with repeated peaks and valleys, starting at $39,190 and ending at $24,893.

Part B Carrier Billing Trend

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

Year	Patients	Clm Lines	Payment
2015	384	8,718	$164,039
2016	387	10,125	$162,868
2017	387	9,540	$166,888
2018	445	10,041	$183,089
2019	495	11,762	$206,133
2020	507	11,439	$203,030
2021	544	14,569	$277,964
2022	550	14,272	$278,948
2023	563	14,554	$286,386
2024	538	15,774	$322,717

Part D Events Trend

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

Year	Patients	Claims	Drug Cost
2015	285	5,695	$455,202
2016	290	5,775	$413,223
2017	301	5,498	$414,808
2018	324	5,131	$418,232
2019	370	5,731	$502,447
2020	394	5,576	$508,696
2021	437	6,905	$600,925
2022	488	7,518	$570,173
2023	512	7,685	$650,920
2024	530	8,483	$707,284

DME Billing Trend

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

Year	Patients	Claims	Payment
2015	77	507	$26,851
2016	93	398	$12,275
2017	69	354	$10,000
2018	34	320	$8,521
2019	43	274	$7,748
2020	56	306	$12,748
2021	52	267	$12,518
2022	113	443	$20,324
2023	96	363	$23,327
2024	91	295	$17,878

* / # = 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	448	1,007	$77
G2211	Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's	479	1,247	$11
80053	Blood test, comprehensive group of blood chemicals	433	986	$10
36415	Insertion of needle into vein for collection of blood sample	428	1,051	$9
85025	Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count	434	1,023	$8

Top 5 Part D drugs in 2024

By total drug costs.

Drug	Generic	Claims	Total Day Supply	Total Drug Cost
Jardiance	Empagliflozin	46	3,480	$66,733
Ozempic	Semaglutide	47	2,178	$65,614
Mounjaro	Tirzepatide	54	1,792	$64,171
Eliquis	Apixaban	63	3,390	$63,020
Januvia	Sitagliptin Phosphate	20	1,200	$22,305

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
A4239	Supply allowance for non-adjunctive, non-implanted continuous glucose monitor (cgm), includes all supplies and accessories, 1 month supply = 1 unit of service	N	N/R	21	$7,959
A7031	Face mask interface, replacement for full face mask, each	N	14	33	$2,617
A7030	Full face mask used with positive airway pressure device, each	N	14	30	$2,357
E0601	Continuous positive airway pressure (cpap) device	Y	N/R	45	$1,587
A7034	Nasal interface (mask or cannula type) used with positive airway pressure device, with or without head strap	N	N/R	12	$726

Open Payments Summary in 2024

Category	Definition	Records	Total Reported Amount	Top Related Entity
General Payments	Reported payment or transfer-of-value amount.	66	$1,102	Novo Nordisk 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 James Stefan Walker, M.D.?

Tedicare shows public-source Medicare data for James Stefan Walker, M.D. (NPI 1932218971), 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 James Stefan Walker, M.D. have ACO affiliation data?

James Stefan Walker, M.D. is shown with ACO affiliation data for Aledade 158 TX MSSP Enhanced (MSSP, ACO ID A5361) and Main Street Rural Health Magnolia ACO LLC (MSSP, ACO ID A5400).

What billing organization is linked to James Stefan Walker, M.D.?

James Stefan Walker, M.D. is linked to CORPUS CHRISTI MEDICAL ASSOCIATES, P.A. (billing NPI 1164713848) in the available physician profile data.

Does James Stefan Walker, M.D. have Open Payments data?

James Stefan Walker, M.D. has 66 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.