Physician

Abdol M Memar-Zia, MD

Internal medicine Oxnard-Thousand Oaks-Ventura, CA Not available

According to 2025 Medicare claims, Abdol M. Memar-Zia, MD (NPI: 1639122112) practices internal medicine in the Oxnard-Thousand Oaks-Ventura, CA market, with the plurality of this provider's patient population coming from Ventura, CA.

Memar-Zia's data goes back to 2012 and runs through 2026. For example, in 2023, this provider had 607 traditional Medicare patients, billed 2,507 HCPCS/CPT codes, and received $187,936 in Medicare payments. Part D data shows 9,677 prescription claims across 561 beneficiaries totaling $1,159,956 in drug costs, and DME data shows 340 claims. No Open Payments records.

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10-Year Trend of Part B billing

Medicare payment trend, with patients and services in the table.

Year	Patients	Services	Medicare Payment
2014	648	3,708	$218,470
2015	634	4,796	$197,721
2016	652	3,260	$199,820
2017	635	3,211	$175,988
2018	637	2,990	$167,542
2019	661	3,010	$191,709
2020	604	2,679	$154,783
2021	590	2,628	$191,288
2022	600	2,524	$182,627
2023	607	2,507	$187,936

10-Year Trend of Part D records

Prescription claims trend, with patients and drug cost in the table.

Year	Patients	Claims	Drug Cost
2014	529	12,345	$838,055
2015	519	11,634	$953,930
2016	532	11,091	$1,069,865
2017	523	10,777	$1,092,144
2018	553	11,085	$1,226,745
2019	572	11,326	$1,303,883
2020	589	11,379	$1,386,902
2021	571	10,921	$1,270,130
2022	572	10,403	$1,190,320
2023	561	9,677	$1,159,956

10-Year Trend of DME records

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

Year	Patients	Claims	Medicare Payment
2014	113	280	$27,487
2015	95	337	$44,482
2016	89	378	$24,003
2017	69	457	$37,056
2018	85	381	$26,894
2019	94	400	$24,606
2020	96	372	$24,570
2021	73	253	$14,987
2022	71	266	$22,607
2023	72	340	$46,472

Top 5 Part B billing codes in 2023

By N of patients.

No connected Part B code-level records for 2023.

Top 5 Part D drugs in 2023

By N of patients.

No connected Part D drug-level records for 2023.

Top 5 DME in 2023

By N of patients.

DME	Patients	Claims	Services	Medicare Payment
All DME supplier activity	72	381	12,554	$62,112
Durable medical equipment	69	340	1,032	$46,472

DME category summary is shown when item-level DME rows are not connected.

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Part B billing, Part D prescribing, DME records, yearly summaries, source JSON, and source notes.

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