Internal Medicine, Gastroenterology · Monterey Park, CA
NPI
1043238413
Since 2006
Specialty
Internal Medicine, Gastroenterology
Code 207RG0100X
Group practices
1
Medicare group memberships
Hospitals
3
Hospital affiliations
500 N Garfield Ave, 100
Monterey Park, CA, 91754
Phone (626) 280-5009
Groups this clinician bills Medicare through
Medicare paid, 2024
$644K
8,106 services
Medicare patients, 2024
1,228
Average age 79
Drug cost, 2024
$855K
1,347 prescriptions
Company payments, 2025
$700
From 7 companies
Procedures and visits billed to Original Medicare, 2024
In 2024, the most common Medicare service billed by Chia CHI G Lai was code 99232 (hospital e&m - subsequent), 4,483 times for 614 patients. In total Chia CHI G Lai billed 8,106 services in 33 codes, and Medicare paid $644K.
| Code |
|---|
Official US government data: the national provider registry and Medicare enrollment records, linked by NPI. Last update of this record: 2020-08-17.
| Setting |
|---|
| Services |
|---|
| Patients |
|---|
| Paid per service |
|---|
| Medicare paid |
|---|
| 99232 Hospital E&M - Subsequent | Facility | 4,483 | 614 | $64.80 | $291K |
| 99222 Hospital E&M - Initial | Facility | 736 | 634 | $107.20 | $79K |
| 43239 Upper GI Endoscopy | Facility | 524 | 493 | $79.62 | $42K |
| 99213 Office E&M - Established | Office | 436 | 267 | $78.43 | $34K |
| 99214 Office E&M - Established | Office | 409 | 356 | $109.57 | $45K |
| 99231 Hospital E&M - Subsequent | Facility | 356 | 172 | $40.57 | $14K |
| 45380 Lower GI Endoscopy - Other | Facility | 305 | 301 | $109.90 | $34K |
| 99442 Telephone Services | Office | 277 | 226 | $77.70 | $22K |
| 99203 Office E&M - New | Office | 152 | 152 | $95.62 | $15K |
| 45385 Colonoscopy - Lesion Removal | Facility | 118 | 114 | $207.38 | $24K |
| 43246 Upper GI Endoscopy | Facility | 111 | 103 | $161.78 | $18K |
| 99204 Office E&M - New | Office | 88 | 88 | $140.97 | $12K |
| 45381 Lower GI Endoscopy - Other | Facility | 15 | 14 | $12.85 | $193 |
| 43264 Upper GI Endoscopy | Facility | 14 | 11 | $70.83 | $992 |
| 43235 Upper GI Endoscopy | Facility | 11 | 11 | $96.57 | $1,062 |
By year: 2022 $641K for 8,321 services; 2023 $643K for 7,836 services; 2024 $644K for 8,106 services.
Medicare prescription drug claims, 2024
In 2024, the drug Chia CHI G Lai prescribed most often to Medicare patients was Gavilyte-G (Peg3350/Sod Sulf,bicarb,cl/Kcl), with 343 prescriptions and refills. In total Chia CHI G Lai wrote 1,347 Medicare prescriptions that cost $855K.
| Drug | Claims | 30-day fills | Patients | Cost |
|---|---|---|---|---|
| Gavilyte-G Peg3350/Sod Sulf,bicarb,cl/Kcl | 343 | 343 | 339 | $5,520 |
| Creon Lipase/Protease/Amylase | 126 | 169 | 46 | $286K |
| Pantoprazole Sodium Generic | 110 | 231 | 71 | $1,197 |
| Vemlidy Tenofovir Alafenamide | 74 | 80 | Under 11 | $115K |
| Famotidine Generic | 60 | 104 | 22 | $655 |
| Peg-3350 And Electrolytes Peg3350/Sod Sulf,bicarb,cl/Kcl | 53 | 53 | 52 | $983 |
| Pancreaze Lipase/Protease/Amylase | 49 | 58 | 17 | $192K |
| Entecavir Generic | 40 | 112 | 11 | $21K |
| Omeprazole Generic | 40 | 69 | 15 | $116 |
| Sucralfate Generic | 35 | 45 | 16 | $810 |
| Zenpep Lipase/Protease/Amylase | 34 | 38 | 13 | $87K |
| Xifaxan Rifaximin | 31 | 31 | 11 | $96K |
| Lansoprazole Generic | 29 | 48 | 21 | $534 |
| Tenofovir Disoproxil Fumarate Generic | 29 | 63 | Under 11 | $13K |
| Gavilyte-C Peg3350/Sod Sulf,bicarb,cl/Kcl | 28 | 28 | 28 | $422 |
Brand drugs: 415 claims; generic drugs: 932 claims.
Money and other things of value reported by the companies
In 2025, drug and medical device companies paid Chia CHI G Lai $700 ($700 in general payments such as food, travel and fees) from 7 companies. The largest payer was Novo Nordisk Inc with $205.
Official US government data on Original Medicare services, Medicare prescription drug plans and the payments drug and device companies must report. Services with fewer than 11 patients and drugs with fewer than 11 claims are not published. Procedure codes are shown by number with their public category.