Doctor profile · Federal record
Dr. Hoa Nguyen, M.D
Internal Medicine Physician (CMS: Internal Medicine) · Gastroenterology Physician · Westminster, CA
- NPI 1619931763
- Accepts Medicare
- 41 yrs in practice
- Male
- Solo practice
- No sanctions
Practice & contact
- Primary practice
-
5835 Westminster Blvd, Suite # A
Westminster, CA 926839109
(714) 898-9770
fax (714) 373-3361
Credentials & registration
- NPI registered
- April 2006 — 20 yrs on file
- Profile last updated
- March 7, 2023
- Year of graduation
- 1985 — 41 yrs since
- Specialty taxonomy
- 207R00000X — NUCC code
- State license (1)
- California #G58722
- Medicaid
- CA #00G587221
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1619931763. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
486
Distinct HCPCS
6
Medicare allowed
$57,054
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 316 | 136 | $98 | |
99203 |
New patient office or other outpatient visit, 30-44 minutes | 88 | 88 | $122 | |
43239 |
Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 33 | 33 | $145 | |
45378 |
Diagnostic exam of large bowel using a flexible endoscope | 24 | 24 | $192 | |
45380 |
Biopsy of large bowel using a flexible endoscope | 13 | 13 | $209 | |
45385 |
Removal of polyps or growths of large bowel using an endoscope with mechanical snare | 12 | 12 | $265 |
In context: peer comparison
Among 13 peers in Westminster Internal Medicine Physician, average services per provider: 331. This provider delivers 1.5× the peer median.Open Payments
Industry payments received
All-time total
$595
Transactions
9
Manufacturers
4
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Gilead Sciences, INC. | 2 | $298.79 | |
| RedHill Biopharma INC. | 3 | $187.84 | |
| Phathom Pharmaceuticals, INC. | 3 | $86.39 | |
| Abbvie INC. | 1 | $21.52 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
1,512
Patients
587
Total drug cost
$27,130
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Atorvastatin Calcium | Generic | 234 | 64 | $3,702 |
| Amlodipine Besylate | Generic | 178 | 48 | $2,183 |
| Losartan Potassium | Generic | 178 | 51 | $3,087 |
| Montelukast Sodium | Generic | 164 | 59 | $2,686 |
| Metformin Hcl | Generic | 123 | 31 | $1,465 |
| Metoprolol Succinate | Generic | 84 | 23 | $1,218 |
| Sod Sulf-Potass Sulf-Mag Sulf (Sodium, Potassium,Mag Sulfates) | Brand | 82 | 81 | $7,402 |
| Gabapentin | Generic | 72 | 24 | $733 |
| Amoxicillin | Generic | 69 | 42 | $342 |
| Gavilyte-G (Peg3350/Sod Sulf,Bicarb,Cl/Kcl) | Brand | 66 | 66 | $1,468 |
Frequently asked questions
What is Dr. Hoa Nguyen's medical specialty?
Dr. Hoa Nguyen practices Internal Medicine Physician in Westminster, CA.
Where does Dr. Hoa Nguyen practice?
Dr. Hoa Nguyen practices at 5835 Westminster Blvd, Westminster, CA 926839109. Office phone: 7148989770.
What is Dr. Hoa Nguyen's NPI?
Dr. Hoa Nguyen's National Provider Identifier (NPI) is 1619931763, issued by NPPES.
Does Dr. Hoa Nguyen accept Medicare assignment?
Yes. Dr. Hoa Nguyen accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Hoa Nguyen commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99213); New patient office or other outpatient visit (HCPCS 99203); Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (HCPCS 43239). Source: CMS Medicare Physician & Other Practitioners file.