Griffioen, Steven

Griffioen, Steven was paid $80K by Medicaid between Feb 2018 and Jun 2024, across 3 billing codes. Its largest line is 90837, psychotherapy session, about an hour — 79% of everything it billed.

33Billing provider infoGRIFFIOEN, STEVEN
GRAND RAPIDS, MI 49534

33aNPI1356440994assigned 09/21/2006

33bProvider typeClinical Psychologist

28Total paid$80K

24GClaims1,128

24DCodes billed3

24AFirst – last monthFeb 2018 – Jun 2024

Compared with peers

Next to other Clinical Psychologist providers in Michigan

Rank by total paid#61 of 117

Median peer was paid$89K

This provider vs. median0.9×

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	212	$10K
2019	138	$9K
2020	202	$15K
2021	236	$19K
2022	166	$11K
2023	132	$12K
2024incomplete	42	$4K

Box 24 · Service lines

What it billed for

Code	Service	Share	Claims	Bene. records	Paid
90837	Psychotherapy session, about an hourPsychotherapy, 53 minutes with patient	79%	893	569	$63K
90834	Psychotherapy session, about 45 minutesPsychotherapy, 45 minutes with patient	15%	195	146	$12K
90791	Psychiatric diagnostic evaluationPsychiatric diagnostic evaluation	6.6%	40	38	$5K

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.