Doctor profile · Federal record

Dr. Hoang Nguyen, M.D.

Internal Medicine Physician (CMS: Internal Medicine) · Fountain Valley, CA

  • NPI 1457329179
  • MIPS 77.0 / 100 · 2023
  • 38 yrs in practice
  • Male
  • Solo practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
16040 Harbor Blvd, Ste. G
Fountain Valley, CA 927081327
(714) 531-7930
fax (714) 531-7997
Mailing address
4061 Reyes St
Irvine, CA 926042723

Credentials & registration

NPPES · NUCC
NPI registered
March 2006 — 20 yrs on file
Profile last updated
October 5, 2018
Year of graduation
1988 — 38 yrs since
Specialty taxonomy
207R00000X — NUCC code
State license (1)
California #A80321
Medicaid
CA #00A803210

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1457329179. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
51,316
Distinct HCPCS
10
Medicare allowed
$1,931,267
HCPCS Description Services Patients Avg allowed
J7320 Hyaluronan or derivitive, genvisc 850, for intra-articular injection, 1 mg 28,839 103 $8
99214 Established patient office or other outpatient visit, 30-39 minutes 3,516 596 $123
Q9967 Low osmolar contrast material, 300-399 mg/ml iodine concentration, per ml 2,229 103 $0
97112 Therapy procedure to re-educate brain-to-nerve-to-muscle function, each 15 minutes 2,057 147 $32
97140 Therapy procedure using manual technique, each 15 minutes 1,351 147 $22
97110 Therapy procedure using exercise to develop strength, endurance, range of motion, and flexibility, each 15 minutes 1,349 147 $23
99458 Management using the results of remote vital sign monitoring per calendar month, each additional 20 minutes 1,154 71 $41
27369 Injection of contrast for imaging of knee joint 1,130 103 $207
73580 Review by radiologist of knee joint image 1,125 103 $142
77002 Fluoroscopic guidance for needle placement 1,122 103 $130

In context: peer comparison

Among 36 peers in this city , average services per provider: 345. This provider delivers 149× the peer median.

Open Payments

Industry payments received

CMS Open Payments
All-time total
$287
Transactions
7
Manufacturers
5
Payer (manufacturer) Industry Txns Amount
Gilead Sciences, Inc. 1 $125.00
ABIOMED 2 $85.06
ZOLL Services LLC (A/K/A ZOLL LifeCor Corp) 2 $36.59
Janssen Pharmaceuticals, Inc 1 $21.22
Astellas Pharma US Inc 1 $18.83

By nature of payment

Food and Beverage
$287

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
10,960
Patients
3,994
Total drug cost
$620,956
Drug Type Claims Patients Total cost
Levocetirizine Dihydrochloride Generic 1,115 489 $45,689
Atorvastatin Calcium Generic 1,020 365 $22,189
Rosuvastatin Calcium Generic 996 322 $38,942
Amlodipine Besylate Generic 981 320 $17,283
Montelukast Sodium Generic 960 431 $25,368
Losartan Potassium Generic 923 324 $20,305
Gabapentin Generic 823 339 $13,613
Metoprolol Succinate Generic 815 269 $21,717
Metformin Hcl Generic 733 234 $13,521
Olmesartan Medoxomil Generic 589 193 $32,798

Frequently asked questions

Auto-generated from federal data
What is Dr. Hoang Nguyen's medical specialty?
Dr. Hoang Nguyen practices Internal Medicine Physician in Fountain Valley, CA.
Where does Dr. Hoang Nguyen practice?
Dr. Hoang Nguyen practices at 16040 Harbor Blvd, Fountain Valley, CA 927081327. Office phone: 7145317930.
What is Dr. Hoang Nguyen's NPI?
Dr. Hoang Nguyen's National Provider Identifier (NPI) is 1457329179, issued by NPPES.
Does Dr. Hoang Nguyen accept Medicare assignment?
Dr. Hoang Nguyen does not accept Medicare assignment for all services. Patients may be billed amounts beyond Medicare-allowed charges.
What procedures does Dr. Hoang Nguyen commonly perform?
Top Medicare-reported procedures in 2023: Hyaluronan or derivitive, genvisc 850, for intra-articular injection, 1 mg (HCPCS J7320); Established patient office or other outpatient visit (HCPCS 99214); Low osmolar contrast material, 300-399 mg/ml iodine concentration, per ml (HCPCS Q9967). Source: CMS Medicare Physician & Other Practitioners file.