Huan C Guu MD a Professional Corporation

Huan C Guu MD a Professional Corporation was paid $101K by Medicaid between Feb 2018 and Oct 2024, across 4 billing codes. Its largest line is 99309, Subsequent nursing facility care, per day, low to moderate complexity — 83% of everything it billed.

33Billing provider infoHUAN C GUU MD A PROFESSIONAL CORPORATION
MISSION VIEJO, CA 92691

33aNPI1851550859assigned 06/04/2008

33bProvider typeInternal Medicine Physician

28Total paid$101K

24GClaims4,489

24DCodes billed4

24AFirst – last monthFeb 2018 – Oct 2024

Compared with peers

Next to other Internal Medicine Physician providers in California

Rank by total paid#644 of 2,679

Median peer was paid$13K

This provider vs. median8.0×

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	804	$13K
2019	607	$11K
2020	408	$15K
2021	516	$18K
2022	806	$24K
2023	816	$15K
2024incomplete	532	$6K

Box 24 · Service lines

What it billed for

Code	Service	Share	Claims	Bene. records	Paid
99309	Subsequent nursing facility care, per day, low to moderate complexity	83%	3,111	1,640	$84K
99308	Subsequent nursing facility care, per day, straightforward	12%	958	631	$12K
99336		4.2%	394	368	$4K
99306	Prolong nursin fac eval 15m	<1%	26	25	$571.04

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 officialGUU, HUAN (PRESIDENT)