Zimmermann, Mark

Zimmermann, Mark was paid $16K by Medicaid between Feb 2019 and Feb 2024, across 2 billing codes. Its largest line is 90834, psychotherapy session, about 45 minutes — 89% of everything it billed.

33Billing provider infoZIMMERMANN, MARK
BETHESDA, MD 20814

33aNPI1275782179assigned 09/16/2008

33bProvider typeClinical Social Worker

28Total paid$16K

24GClaims295

24DCodes billed2

24AFirst – last monthFeb 2019 – Feb 2024

Compared with peers

Next to other Clinical Social Worker providers in Maryland

Rank by total paid#391 of 580

Median peer was paid$40K

This provider vs. median0.4×

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
2019	28	$2K
2022	29	$2K
2023	164	$9K
2024incomplete	74	$4K

Box 24 · Service lines

What it billed for

Code	Service	Share	Claims	Bene. records	Paid
90834	Psychotherapy session, about 45 minutesPsychotherapy, 45 minutes with patient	89%	267	118	$14K
90832	Psychotherapy session, about 30 minutesPsychotherapy, 30 minutes with patient	11%	28	19	$2K

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.