Physician

William F. Baker, M.D.

According to 2025 Medicare claims, William Baker, M.D. (NPI: 1720040793) practices internal medicine in the Bakersfield-Delano, CA market, with the plurality of this provider's patient population coming from Kern, CA. This provider's primary affiliated billing organization is CENTRIC HEALTH (NPI: 1831248236; TIN: 953511288) and primary practice location at 93311-8823. Baker is affiliated with the Caravan Collaborative Pathways (ACO ID: A4604) and Collaborative ACO 30, LLC (ACO ID: A5483), participating under the MSSP model.

Baker's data goes back to 2015 and runs through 2024. For example, in 2024, this provider had 989 traditional Medicare patients, billed 28,870 HCPCS/CPT codes, and received $846,665 in Medicare payments. The top billing code was G0439 (Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit). Part D data shows 12,926 prescription claims across 877 beneficiaries totaling $1,430,982 in drug costs, led by Eliquis (Apixaban). DME data shows 557 claims. Open Payments data shows 69 records totaling $1,089. 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 did not follow a clear longitudinal pattern. In contrast, DME billing represents a smaller volume and rose steadily, from $39,344 to $50,410.

Part B Carrier Billing Trend

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

Year	Patients	Clm Lines	Payment
2015	976	14,127	$774,900
2016	989	33,391	$783,634
2017	1,086	17,712	$880,330
2018	1,075	21,349	$832,856
2019	1,022	90,173	$829,584
2020	997	20,177	$707,764
2021	1,148	19,752	$952,096
2022	1,049	22,569	$965,920
2023	1,007	21,228	$927,629
2024	989	28,870	$846,665

Part D Events Trend

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

Year	Patients	Claims	Drug Cost
2015	693	13,877	$1,167,804
2016	751	15,824	$1,365,560
2017	841	17,011	$1,461,259
2018	889	18,169	$1,923,476
2019	903	18,244	$2,141,469
2020	884	17,359	$1,900,228
2021	987	15,224	$1,599,104
2022	975	15,410	$1,686,611
2023	954	13,692	$1,665,151
2024	877	12,926	$1,430,982

DME Billing Trend

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

Year	Patients	Claims	Payment
2015	349	1,152	$264,536
2016	422	1,179	$199,354
2017	308	994	$28,708
2018	301	943	$36,539
2019	283	821	$36,641
2020	204	858	$58,064
2021	172	625	$43,891
2022	171	524	$29,417
2023	133	556	$46,775
2024	134	557	$63,392

* / # = 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
G0439	Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit	519	519	$132
99214	Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	914	4,319	$93
99213	Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more	738	1,859	$67
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	920	4,723	$13
93000	Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report	414	480	$11

Top 5 Part D drugs in 2024

By total drug costs.

Drug	Generic	Claims	Total Day Supply	Total Drug Cost
Eliquis	Apixaban	205	8,845	$173,885
Ozempic	Semaglutide	100	3,208	$95,612
Januvia	Sitagliptin Phosphate	119	5,355	$94,271
Xarelto	Rivaroxaban	101	4,680	$84,724
Farxiga	Dapagliflozin Propanediol	100	4,380	$81,146

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	40	$18,848
L3916	Wrist hand orthosis, includes one or more nontorsion joint(s), elastic bands, turnbuckles, may include soft interface, straps, prefabricated, off-the-shelf	N	21	21	$17,482
E1390	Oxygen concentrator, single delivery port, capable of delivering 85 percent or greater oxygen concentration at the prescribed flow rate	Y	14	114	$8,751
L1906	Ankle foot orthosis, multiligamentous ankle support, prefabricated, off-the-shelf	N	17	17	$3,568
A7032	Cushion for use on nasal mask interface, replacement only, each	N	N/R	27	$2,600

Open Payments Summary in 2024

Category	Definition	Records	Total Reported Amount	Top Related Entity
General Payments	Reported payment or transfer-of-value amount.	69	$1,089	Amgen 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 William F. Baker, M.D.?

Tedicare shows public-source Medicare data for William F. Baker, M.D. (NPI 1720040793), 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 William F. Baker, M.D. have ACO affiliation data?

William F. Baker, M.D. is shown with ACO affiliation data for Caravan Collaborative Pathways (MSSP, ACO ID A4604) and Collaborative ACO 30, LLC (MSSP, ACO ID A5483).

What billing organization is linked to William F. Baker, M.D.?

William F. Baker, M.D. is linked to CENTRIC HEALTH (billing NPI 1831248236) in the available physician profile data.

Does William F. Baker, M.D. have Open Payments data?

William F. Baker, M.D. has 69 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.