Internal Medicine, Gastroenterology · Mission Viejo, CA
NPI
1457433906
Since 2006
Specialty
Internal Medicine, Gastroenterology
Code 207RG0100X
Group practices
1
Medicare group memberships
Hospitals
1
Hospital affiliations
27871 Medical Center Rd Ste 200
Mission Viejo, CA, 92691
Phone (949) 364-5090
Groups this clinician bills Medicare through
Medicare paid, 2024
$79K
739 services
Medicare patients, 2024
326
Average age 74
Drug cost, 2024
$186K
1,021 prescriptions
Company payments, 2025
$4,448
From 20 companies
Procedures and visits billed to Original Medicare, 2024
In 2024, the most common Medicare service billed by Wanjun Bae was code 45380 (lower gi endoscopy - other), 133 times for 132 patients. In total Wanjun Bae billed 739 services in 32 codes, and Medicare paid $79K.
| Code |
|---|
Official US government data: the national provider registry and Medicare enrollment records, linked by NPI. Last update of this record: 2020-10-26.
| Setting |
|---|
| Services |
|---|
| Patients |
|---|
| Paid per service |
|---|
| Medicare paid |
|---|
| 45380 Lower GI Endoscopy - Other | Facility | 133 | 132 | $50.30 | $6,690 |
| 45385 Colonoscopy - Lesion Removal | Facility | 128 | 125 | $209.75 | $27K |
| 99214 Office E&M - Established | Office | 121 | 91 | $104.37 | $13K |
| 99213 Office E&M - Established | Office | 97 | 76 | $72.07 | $6,991 |
| 99204 Office E&M - New | Office | 75 | 75 | $132.30 | $9,922 |
| 43239 Upper GI Endoscopy | Facility | 63 | 62 | $74.46 | $4,691 |
| 45381 Lower GI Endoscopy - Other | Facility | 28 | 27 | $13.61 | $381 |
| 99203 Office E&M - New | Office | 26 | 26 | $82.09 | $2,134 |
| 43251 Upper GI Endoscopy | Facility | 11 | 11 | $117.92 | $1,297 |
By year: 2022 $98K for 1,680 services; 2023 $90K for 1,426 services; 2024 $79K for 739 services.
Lab tests billed to Medicare, 2023
| Test code | Tests | Patients | Paid per test | Medicare paid |
|---|---|---|---|---|
| 36415 Venipuncture Blood Collection | 21 | 12 | $8.40 | $176 |
Medicare prescription drug claims, 2024
In 2024, the drug Wanjun Bae prescribed most often to Medicare patients was Pantoprazole Sodium, with 230 prescriptions and refills. In total Wanjun Bae wrote 1,021 Medicare prescriptions that cost $186K.
| Drug | Claims | 30-day fills | Patients | Cost |
|---|---|---|---|---|
| Pantoprazole Sodium Generic | 230 | 536 | 74 | $2,343 |
| Plenvu Peg3350/Sod Sul/Nacl/Kcl/Asb/C | 198 | 198 | 187 | $27K |
| Peg 3350-Electrolyte Sodium Chloride/Nahco3/Kcl/Peg | 131 | 131 | 127 | $2,478 |
| Omeprazole Generic | 89 | 220 | 29 | $809 |
| Colestipol Hcl Generic | 39 | 65 | 16 | $1,659 |
| Linzess Linaclotide | 30 | 50 | Under 11 | $26K |
| Esomeprazole Magnesium Generic | 29 | 51 | 16 | $1,103 |
| Lansoprazole Generic | 21 | 49 | Under 11 | $521 |
| Famotidine Generic | 21 | 31 | Under 11 | $145 |
| Dexlansoprazole Dr Dexlansoprazole | 20 | 34 | Under 11 | $4,093 |
| Dicyclomine Hcl Generic | 15 | 20 | Under 11 | $469 |
| Suflave Peg 3350/Sod Sulf,chlr/Pot/Mag | 15 | 15 | 14 | $1,900 |
| Spironolactone Generic | 14 | 30 | Under 11 | $77.72 |
| Furosemide Generic | 12 | 22 | Under 11 | $25.54 |
| Azathioprine Generic | 11 | 11 | Under 11 | $225 |
Brand drugs: 348 claims; generic drugs: 673 claims.
Money and other things of value reported by the companies
In 2025, drug and medical device companies paid Wanjun Bae $4,448 ($4,448 in general payments such as food, travel and fees) from 20 companies. The largest payer was Abbvie Inc. with $1,016.
| Company | Payments | Amount |
|---|---|---|
| Abbvie Inc. ABBV | 49 | $1,016 |
| Janssen Biotech, Inc. JNJ | 20 | $691 |
| Takeda Pharmaceuticals U.S.A., Inc. TAK | 28 | $425 |
| Pfizer Inc. PFE | 13 | $356 |
| Salix Pharmaceuticals, a division of Bausch Health US, LLC BHC | 15 | $327 |
| Lilly USA, LLC LLY | 9 | $248 |
| Ardelyx, Inc. ARDX | 8 | $215 |
| Madrigal Pharmaceuticals MDGL | 5 | $205 |
| Genzyme Corporation SNY | 6 | $197 |
| Regeneron Healthcare Solutions, Inc. REGN | 5 | $145 |
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.