Physician

Aaron Patrick Fieker, DO

Gastroenterology Tulsa, OK Gastroenterology Specialists, Inc.

According to 2025 Medicare claims, Aaron Patrick Fieker, DO (NPI: 1326268079) practices gastroenterology in the Tulsa, OK market, with the plurality of this provider's patient population coming from Tulsa, OK. This provider's primary affiliated billing organization is Gastroenterology Specialists, Inc. (NPI: 1932152410; TIN: ).

Fieker's data goes back to 2012 and runs through 2026. For example, in 2023, this provider had 621 traditional Medicare patients, billed 1,231 HCPCS/CPT codes, and received $112,133 in Medicare payments. Part D data shows 1,459 prescription claims across 539 beneficiaries totaling $1,668,340 in drug costs. Open Payments data shows 104 records totaling $1,841.

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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	391	915	$92,188
2015	436	1,038	$101,114
2016	508	1,120	$109,607
2017	480	1,198	$94,960
2018	539	1,378	$115,925
2019	693	1,576	$160,905
2020	607	1,182	$133,577
2021	558	1,117	$118,628
2022	629	1,213	$119,414
2023	621	1,231	$112,133

10-Year Trend of Part D records

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

Year	Patients	Claims	Drug Cost
2014	208	563	$410,529
2015	257	710	$521,968
2016	273	759	$1,016,377
2017	256	661	$689,959
2018	235	454	$270,636
2019	259	599	$216,986
2020	378	1,004	$397,811
2021	396	1,233	$1,371,171
2022	502	1,362	$1,128,002
2023	539	1,459	$1,668,340

10-Year Trend of DME records

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

No connected records

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.

No connected DME records for 2023.

Physician Data Export

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

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