Doctor profile · Federal record
Dr. Steve Nguyen, D.O.
Gastroenterology Physician (CMS: Gastroenterology) · Rosemead, CA
- NPI 1649357732
- 31 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
9120 Valley Blvd
Rosemead, CA 917701920
(626) 316-8169
Credentials & registration
- NPI registered
- November 2006 — 20 yrs on file
- Profile last updated
- August 26, 2025
- Year of graduation
- 1995 — 31 yrs since
- Specialty taxonomy
- 207RG0100X — NUCC code
- State license (1)
- California #20A7028
- Medicaid
- CA #00AX70281
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1649357732. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
407
Distinct HCPCS
8
Medicare allowed
$49,720
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 125 | 78 | $93 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 72 | 54 | $132 | |
99203 |
New patient office or other outpatient visit, 30-44 minutes | 66 | 66 | $116 | |
43239 |
Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 40 | 37 | $121 | |
45385 |
Removal of polyps or growths of large bowel using an endoscope with mechanical snare | 37 | 35 | $251 | |
G0105 |
Colorectal cancer screening; colonoscopy on individual at high risk | 28 | 25 | $104 | |
99232 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 24 | 11 | $79 | |
99222 |
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | 15 | 13 | $130 |
In context: peer comparison
Among 2 peers in this city , average services per provider: 54. This provider delivers 7.5× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
480
Patients
254
Total drug cost
$69,599
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Gavilyte-G (Peg3350/Sod Sulf,bicarb,cl/Kcl) | Brand | 165 | 145 | $2,795 |
| Entecavir | Generic | 103 | 13 | $33,347 |
| Famotidine | Generic | 46 | 27 | $1,077 |
| Peg-3350 And Electrolytes (Peg3350/Sod Sulf,bicarb,cl/Kcl) | Brand | 36 | 34 | $654 |
| Sod Sulf-Potass Sulf-Mag Sulf (Sodium, Potassium,mag Sulfates) | Brand | 28 | 23 | $2,378 |
| Pantoprazole Sodium | Generic | 22 | 12 | $195 |
| Propranolol Hcl | Generic | 19 | 0 | $370 |
| Tenofovir Disoproxil Fumarate | Generic | 15 | 0 | $4,709 |
| Sucralfate | Generic | 13 | 0 | $4,869 |
| Adefovir Dipivoxil | Generic | 11 | 0 | $8,281 |
Hospital affiliations
Frequently asked questions
What is Dr. Steve Nguyen's medical specialty?
Dr. Steve Nguyen practices Gastroenterology Physician in Rosemead, CA.
Where does Dr. Steve Nguyen practice?
Dr. Steve Nguyen practices at 9120 Valley Blvd, Rosemead, CA 917701920. Office phone: 6263168169.
What is Dr. Steve Nguyen's NPI?
Dr. Steve Nguyen's National Provider Identifier (NPI) is 1649357732, issued by NPPES.
Does Dr. Steve Nguyen accept Medicare assignment?
Dr. Steve Nguyen does not accept Medicare assignment for all services. Patients may be billed amounts beyond Medicare-allowed charges.
What procedures does Dr. Steve Nguyen commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99213); Established patient office or other outpatient visit (HCPCS 99214); New patient office or other outpatient visit (HCPCS 99203). Source: CMS Medicare Physician & Other Practitioners file.