Marin Gastroenterology

Marin Gastroenterology was paid $32K by Medicaid between Jan 2018 and Mar 2021, across 6 billing codes. Its largest line is 43239, Esophagogastroduodenoscopy, flexible, transoral; with biopsy, single or multiple — 47% of everything it billed.

33Billing provider infoMARIN GASTROENTEROLOGY
CORTE MADERA, CA 94925

33aNPI1730125758assigned 06/20/2006

33bProvider typeGastroenterology Physician

28Total paid$32K

24GClaims678

24DCodes billed6

24AFirst – last monthJan 2018 – Mar 2021

Compared with peers

Next to other Gastroenterology Physician providers in California

Rank by total paid#204 of 363

Median peer was paid$55K

This provider vs. median0.6×

Peers share this provider's primary NPPES type and state. Size alone says nothing about billing quality: a big agency or a hospital system is expected to sit far above the median.

Box 24A · Dates of service

Paid by month

Paid that monthNov–Dec 2024: claims still arriving when the file was cut, so these months run low for every provider

By year, as a table

Year	Claims	Paid
2018	472	$16K
2019	181	$12K
2021	25	$4K

Box 24 · Service lines

What it billed for

Code	Service	Share	Claims	Bene. records	Paid
43239	Esophagogastroduodenoscopy, flexible, transoral; with biopsy, single or multiple	47%	200	200	$15K
99214	Doctor's office visit, returning patient (more involved)Office or other outpatient visit for the evaluation and management of an established patient, moderate complexity	16%	260	257	$5K
99204	Doctor's office visit, new patient (more involved)Office or other outpatient visit for the evaluation and management of a new patient, moderate complexity	16%	111	111	$5K
99244	Office or other outpatient consultation, moderate to high complexity	14%	38	38	$5K
45380	Colonoscopy, flexible; with biopsy, single or multiple	5.4%	55	55	$2K
99223	Prolong inpt eval add15 m	<1%	14	13	$315.77

Claims and beneficiary counts add up across code × month rows, so one patient seen every month counts many times. Rows with fewer than 12 claims are suppressed by HHS, so small lines can be missing.

From NPPES

Who's on the registration

Authorized officialSOWERBY, TIMOTHY (MANAGING PARTNER)