Physician

Aaron B Neinstein, MD

Endocrinology San Francisco-San Mateo-Redwood City, CA Regents Of The University Of California

According to 2025 Medicare claims, Aaron B. Neinstein, MD (NPI: 1205074028) practices endocrinology in the San Francisco-San Mateo-Redwood City, CA market, with the plurality of this provider's patient population coming from San Francisco, CA. This provider's primary affiliated billing organization is Regents Of The University Of California (NPI: 1760552343; TIN: ).

Neinstein's data goes back to 2012 and runs through 2026. For example, in 2023, this provider had 33 traditional Medicare patients, billed 88 HCPCS/CPT codes, and received $6,564 in Medicare payments. Part D data shows 328 prescription claims across 41 beneficiaries totaling $207,070 in drug costs, and DME data shows 146 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	44	78	$6,298
2015	64	116	$8,410
2016	36	51	$3,800
2017	37	65	$4,886
2018	47	81	$5,828
2019	33	82	$5,064
2020	43	113	$7,359
2021	54	129	$9,541
2022	55	148	$10,277
2023	33	88	$6,564

10-Year Trend of Part D records

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

Year	Patients	Claims	Drug Cost
2014	32	235	$69,289
2015	44	325	$94,099
2016	31	203	$38,443
2017	28	262	$56,821
2018	29	261	$74,038
2019	38	326	$117,883
2020	35	316	$159,802
2021	40	383	$230,835
2022	45	462	$307,830
2023	41	328	$207,070

10-Year Trend of DME records

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

Year	Patients	Claims	Medicare Payment
2014	Not reported for this year	11	$192
2015	Not reported for this year	14	$47
2016	Not reported for this year	14	$296
2017	Not reported for this year	18	$293
2018	11	44	$4,271
2019	12	57	$6,300
2020	15	85	$15,224
2021	14	114	$23,905
2022	15	148	$31,399
2023	16	146	$30,649

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	16	154	1,135	$35,955
Durable medical equipment	15	146	611	$30,649

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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