Physician

Randall S Williams, MD

According to 2025 Medicare claims, Randall Williams, MD (NPI: 1245261114) practices general practice in the Chico, CA market, with the plurality of this provider's patient population coming from Butte, CA. This provider's primary affiliated billing organization is MANGROVE MEDICAL GROUP (NPI: 1326038381; TIN: 946195952) and primary practice location at 95926-3509. Williams is affiliated with the Achiever Health Care Consultation and Management LLC (ACO ID: A4597), participating under the MSSP model.

Williams' data goes back to 2015 and runs through 2024. For example, in 2024, this provider had 1,534 traditional Medicare patients, billed 71,829 HCPCS/CPT codes, and received $1,355,194 in Medicare payments. The top billing code was 99213 (Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more). Part D data shows 19,906 prescription claims across 1,449 beneficiaries totaling $2,259,380 in drug costs, led by Mounjaro (Tirzepatide). DME data shows 1,110 claims. Open Payments data shows 227 records totaling $4,050. 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 $846,710 to $1,355,194. Similarly, Part D prescription costs have risen steadily, from $994,636 to $2,259,380. In contrast, DME billing represents a smaller volume and moved sharply higher in recent years, from $63,418 to $151,257.

Part B Carrier Billing Trend

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

Year	Patients	Clm Lines	Payment
2015	1,418	35,580	$846,710
2016	1,389	37,891	$826,835
2017	1,336	38,702	$957,562
2018	1,511	46,447	$950,874
2019	1,688	42,251	$1,026,725
2020	1,819	59,364	$1,466,134
2021	1,588	65,948	$1,507,514
2022	1,459	63,349	$1,163,184
2023	1,385	56,932	$1,171,793
2024	1,534	71,829	$1,355,194

Part D Events Trend

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

Year	Patients	Claims	Drug Cost
2015	1,070	14,628	$994,636
2016	1,123	14,938	$1,147,097
2017	1,127	15,407	$1,237,990
2018	1,250	16,296	$1,307,974
2019	1,392	17,022	$1,511,778
2020	1,514	20,141	$1,837,854
2021	1,361	18,905	$1,876,972
2022	1,277	17,844	$1,916,083
2023	1,318	18,352	$2,217,870
2024	1,449	19,906	$2,259,380

DME Billing Trend

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

Year	Patients	Claims	Payment
2015	414	1,278	$56,572
2016	458	1,312	$47,731
2017	314	1,032	$23,962
2018	432	1,214	$37,857
2019	404	1,298	$61,665
2020	407	1,393	$83,807
2021	472	1,590	$112,115
2022	412	1,419	$126,488
2023	392	1,570	$152,200
2024	346	1,110	$140,732

* / # = 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
99213	Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more	1,285	3,721	$61
80061	Blood test, lipids (cholesterol and triglycerides)	985	1,134	$13
80053	Blood test, comprehensive group of blood chemicals	985	1,189	$10
36415	Insertion of needle into vein for collection of blood sample	1,098	2,026	$9
85025	Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count	986	1,212	$8

Top 5 Part D drugs in 2024

By total drug costs.

Drug	Generic	Claims	Total Day Supply	Total Drug Cost
Mounjaro	Tirzepatide	585	17,717	$622,851
Ozempic	Semaglutide	197	8,708	$263,364
Eliquis	Apixaban	198	9,387	$179,065
Arexvy	Rsvpref3 Antigen/As01e/Pf	365	3,932	$114,052
Farxiga	Dapagliflozin Propanediol	48	3,060	$53,430

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	52	216	$109,210
E1390	Oxygen concentrator, single delivery port, capable of delivering 85 percent or greater oxygen concentration at the prescribed flow rate	Y	N/R	55	$4,327
A7031	Face mask interface, replacement for full face mask, each	N	19	38	$3,459
E0601	Continuous positive airway pressure (cpap) device	Y	17	97	$3,037
A7030	Full face mask used with positive airway pressure device, each	N	19	35	$2,834

Open Payments Summary in 2024

Category	Definition	Records	Total Reported Amount	Top Related Entity
General Payments	Reported payment or transfer-of-value amount.	227	$4,050	ABBVIE 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 Randall S. Williams, MD?

Tedicare shows public-source Medicare data for Randall S. Williams, MD (NPI 1245261114), 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 Randall S. Williams, MD have ACO affiliation data?

Randall S. Williams, MD is shown with ACO affiliation data for Achiever Health Care Consultation and Management LLC (MSSP, ACO ID A4597).

What billing organization is linked to Randall S. Williams, MD?

Randall S. Williams, MD is linked to MANGROVE MEDICAL GROUP (billing NPI 1326038381) in the available physician profile data.

Does Randall S. Williams, MD have Open Payments data?

Randall S. Williams, MD has 227 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.