Physician

Adam Robert Riordan, DO

Gastroenterology Ithaca, NY Guthrie Medical Group PC

According to 2025 Medicare claims, Adam Robert Riordan, DO (NPI: 1508126988) practices gastroenterology in the Ithaca, NY market, with the plurality of this provider's patient population coming from Tompkins, NY. This provider's primary affiliated billing organization is Guthrie Medical Group PC (NPI: 1134178635; TIN: ).

Riordan's data goes back to 2012 and runs through 2026. For example, in 2023, this provider had 323 traditional Medicare patients, billed 728 HCPCS/CPT codes, and received $58,895 in Medicare payments. Part D data shows 833 prescription claims across 346 beneficiaries totaling $377,013 in drug costs. Open Payments data shows 73 records totaling $1,523.

Download physician data Market Trend charts Top 5 tables

Download physician data with all billing codes (2014-2023) - $9 per 100 physicians.

10-Year Trend of Part B billing

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

Year	Patients	Services	Medicare Payment
2014	Not reported for this year	Not reported for this year	Not reported for this year
2015	Not reported for this year	Not reported for this year	Not reported for this year
2016	Not reported for this year	Not reported for this year	Not reported for this year
2017	Not reported for this year	Not reported for this year	Not reported for this year
2018	144	346	$23,517
2019	355	937	$68,900
2020	303	765	$59,668
2021	366	924	$68,993
2022	357	870	$65,332
2023	323	728	$58,895

10-Year Trend of Part D records

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

Year	Patients	Claims	Drug Cost
2014	Not reported for this year	11	$600
2015	Not reported for this year	27	$880
2016	Not reported for this year	Not reported for this year	Not reported for this year
2017	Not reported for this year	15	$10,171
2018	73	117	$25,076
2019	250	479	$134,442
2020	220	559	$232,769
2021	315	704	$223,976
2022	328	762	$456,606
2023	346	833	$377,013

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

Download physician data with all billing codes (2014-2023)

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

$9 per 100 physicians

Download physician data