Internal Medicine, Gastroenterology · San Jose, CA
NPI
1770585044
Since 2005
Specialty
Internal Medicine, Gastroenterology
Code 207RG0100X
Group practices
1
Medicare group memberships
Hospitals
0
Hospital affiliations
2331 Montpelier Dr Ste B
San Jose, CA, 95116
Phone (408) 347-9001
Groups this clinician bills Medicare through
Medicare paid, 2024
$83K
930 services
Medicare patients, 2024
354
Average age 74
Drug cost, 2024
$1.3M
1,600 prescriptions
Company payments, 2025
$467
From 7 companies
Procedures and visits billed to Original Medicare, 2024
In 2024, the most common Medicare service billed by Khanh K Nguyen was code 88305 (surgical pathology examination), 244 times for 119 patients. In total Khanh K Nguyen billed 930 services in 26 codes, and Medicare paid $83K.
| Code |
|---|
Official US government data: the national provider registry and Medicare enrollment records, linked by NPI. Last update of this record: 2023-11-07.
| Setting |
|---|
| Services |
|---|
| Patients |
|---|
| Paid per service |
|---|
| Medicare paid |
|---|
| 88305 Surgical Pathology Examination | Office | 244 | 119 | $39.67 | $9,679 |
| 99214 Office E&M - Established | Office | 130 | 127 | $100.31 | $13K |
| G0500 Moderate sedation services provided by the same physician or other qualified health care professional performing a gastrointestinal endoscopic service that sedation supports, requiring the presence of an independent trained observer to assist in the monito | Facility | 99 | 98 | $4.25 | $420 |
| 99204 Office E&M - New | Office | 94 | 94 | $132.22 | $12K |
| 45385 Colonoscopy - Lesion Removal | Facility | 62 | 62 | $209.86 | $13K |
| 43239 Upper GI Endoscopy | Facility | 57 | 55 | $79.60 | $4,537 |
| 45380 Lower GI Endoscopy - Other | Facility | 44 | 43 | $139.41 | $6,134 |
| 99213 Office E&M - Established | Office | 42 | 39 | $74.54 | $3,131 |
| 99203 Office E&M - New | Office | 37 | 37 | $75.30 | $2,786 |
| 88312 Surgical Pathology Examination | Office | 30 | 15 | $97.43 | $2,923 |
| 45378 Lower GI Endoscopy - Other | Facility | 23 | 23 | $116.54 | $2,680 |
| G0105 Colorectal cancer screening; colonoscopy on individual at high risk | Facility | 13 | 13 | $205.59 | $2,673 |
By year: 2022 $107K for 1,212 services; 2023 $64K for 744 services; 2024 $83K for 930 services.
Lab tests billed to Medicare, 2024
| Test code | Tests | Patients | Paid per test | Medicare paid |
|---|---|---|---|---|
| 88305 Surgical Pathology Examination | 244 | 119 | $39.67 | $9,679 |
| 88312 Surgical Pathology Examination | 30 | 15 | $97.43 | $2,923 |
Medicare prescription drug claims, 2024
In 2024, the drug Khanh K Nguyen prescribed most often to Medicare patients was Vemlidy (Tenofovir Alafenamide), with 651 prescriptions and refills. In total Khanh K Nguyen wrote 1,600 Medicare prescriptions that cost $1.3M.
| Drug | Claims | 30-day fills | Patients | Cost |
|---|---|---|---|---|
| Vemlidy Tenofovir Alafenamide | 651 | 730 | 69 | $1.0M |
| Sod Sulf-Potass Sulf-Mag Sulf Sodium, Potassium,mag Sulfates | 298 | 298 | 293 | $19K |
| Entecavir Generic | 110 | 188 | 18 | $21K |
| Pantoprazole Sodium Generic | 105 | 250 | 62 | $1,106 |
| Tenofovir Disoproxil Fumarate Generic | 73 | 147 | 17 | $29K |
| Gavilyte-G Peg3350/Sod Sulf,bicarb,cl/Kcl | 56 | 56 | 52 | $847 |
| Omeprazole Generic | 55 | 118 | 35 | $389 |
| Atorvastatin Calcium Generic | 26 | 76 | Under 11 | $172 |
| Gavilyte-C Peg3350/Sod Sulf,bicarb,cl/Kcl | 24 | 24 | 23 | $463 |
| Famotidine Generic | 22 | 28 | Under 11 | $110 |
| Metronidazole Generic | 14 | 14 | 14 | $134 |
| Peg-3350 And Electrolytes Peg3350/Sod Sulf,bicarb,cl/Kcl | 13 | 13 | 13 | $233 |
| Ursodiol Generic | 12 | 36 | Under 11 | $4,415 |
| Doxycycline Hyclate Generic | 11 | 11 | 11 | $131 |
| Peg 3350-Electrolyte Sodium Chloride/Nahco3/Kcl/Peg | 11 | 11 | 11 | $129 |
Brand drugs: 804 claims; generic drugs: 796 claims.
Money and other things of value reported by the companies
In 2025, drug and medical device companies paid Khanh K Nguyen $467 ($467 in general payments such as food, travel and fees) from 7 companies. The largest payer was Medtronic, Inc. with $128.
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.