Physician
Andrea Tieng, MD INC
Andrea Tieng, MD INC was paid $545K by Medicaid between Jan 2018 and Aug 2024, across 10 billing codes. Its largest line is 45378, Colonoscopy, flexible; diagnostic, including collection of specimen(s) — 39% of everything it billed.
33Billing provider infoANDREA TIENG, MD INC
RANCHO CUCAMONGA, CA 91730
RANCHO CUCAMONGA, CA 91730
33aNPI1013276575assigned 05/03/2012
33bProvider typeGastroenterology Physician
28Total paid$545K
24GClaims4,308
24DCodes billed10
24AFirst – last monthJan 2018 – Aug 2024
Compared with peers
Next to other Gastroenterology Physician providers in California
Rank by total paid#80 of 363
Median peer was paid$55K
This provider vs. median9.9×
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 | 821 | $101K | |
| 2019 | 705 | $72K | |
| 2020 | 981 | $102K | |
| 2021 | 906 | $104K | |
| 2022 | 341 | $54K | |
| 2023 | 375 | $65K | |
| 2024incomplete | 179 | $46K |
Box 24 · Service lines
What it billed for
| Code | Service | Share | Claims | Bene. records | Paid |
|---|---|---|---|---|---|
| 45378 | Colonoscopy, flexible; diagnostic, including collection of specimen(s) | 39% | 827 | 823 | $215K |
| 43239 | Esophagogastroduodenoscopy, flexible, transoral; with biopsy, single or multiple | 28% | 821 | 813 | $150K |
| 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 | 17% | 1,255 | 1,242 | $91K |
| 45385 | Colonoscopy, flexible; with removal of tumor(s), polyp(s), or other lesion(s) | 6.1% | 99 | 98 | $33K |
| 45380 | Colonoscopy, flexible; with biopsy, single or multiple | 3.1% | 66 | 65 | $17K |
| 99203 | Doctor's office visit, new patient (routine)Office or other outpatient visit for the evaluation and management of a new patient, low complexity | 2.5% | 247 | 247 | $13K |
| 99213 | Doctor's office visit, returning patient (routine)Office or other outpatient visit for the evaluation and management of an established patient, low complexity | 2.1% | 493 | 490 | $11K |
| 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 | 1.8% | 252 | 247 | $10K |
| 99152 | <1% | 122 | 122 | $4K | |
| G8417 | Bmi is documented above normal parameters and a follow-up plan is documented | 0% | 126 | 126 | $0.00 |
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 officialTIENG, ANDREA (MD)