Castro-Zarraga, Margarita

Castro-Zarraga, Margarita was paid $10K by Medicaid between Jan 2018 and Mar 2018, across 3 billing codes. Its largest line is 99214, doctor's office visit, returning patient (more involved) — 45% of everything it billed.

33Billing provider infoCASTRO-ZARRAGA, MARGARITA
LOWELL, MA 01852

33aNPI1578705679assigned 04/03/2009

33bProvider typeFamily Medicine Physician

28Total paid$10K

24GClaims169

24DCodes billed3

24AFirst – last monthJan 2018 – Mar 2018

Compared with peers

Next to other Family Medicine Physician providers in Massachusetts

Rank by total paid#384 of 744

Median peer was paid$10K

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	169	$10K

Box 24 · Service lines

What it billed for

Code	Service	Share	Claims	Bene. records	Paid
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	45%	58	36	$4K
80307	Drug test(s), presumptive, any number of drug classes; immunoassay	44%	94	59	$4K
G0480	Drug test(s), definitive, utilizing (1) drug identification methods able to identify individual drugs and distinguish between structural isomers (but not necessarily stereoisomers), including, but not limited to gc/ms (any type, single or tandem) and lc/ms (any type, single or tandem and excluding immunoassays (e.g., ia, eia, elisa, emit, fpia) and enzymatic methods (e.g., alcohol dehydrogenase)), (2) stable isotope or other universally recognized internal standards in all samples (e.g., to control for matrix effects, interferences and variations in signal strength), and (3) method or drug-specific calibration and matrix-matched quality control material (e.g., to control for instrument variations and mass spectral drift); qualitative or quantitative, all sources, includes specimen validity testing, per day; 1-7 drug class(es), including metabolite(s) if performed	11%	17	14	$1K

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.