Doctor profile · Federal record

Dr. Bang Nguyen, DO

Hospitalist Physician (CMS: Internal Medicine) · Internal Medicine Physician · Fullerton, CA

  • NPI 1861477044
  • Accepts Medicare
  • 31 yrs in practice
  • Licensed in 2 states
  • Male
  • Solo practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
101 E Valencia Mesa Dr
Fullerton, CA 928353809
(714) 447-5027

Credentials & registration

NPPES · NUCC
NPI registered
December 2005 — 21 yrs on file
Profile last updated
April 19, 2018
Year of graduation
1995 — 31 yrs since
Specialty taxonomy
208M00000X — NUCC code
State licenses (2)
California #20A9726 · Oregon #DO21851
Medicaid
OR #134037

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1861477044. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
896
Distinct HCPCS
5
Medicare allowed
$76,019
HCPCS Description Services Patients Avg allowed
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 526 193 $83
99238 Hospital discharge day management, 30 minutes or less 198 192 $86
99231 Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes 94 51 $52
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 53 53 $137
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 25 22 $125

In context: peer comparison

Among 4 peers in Fullerton Hospitalist Physician, average services per provider: 158. This provider delivers 5.7× the peer median.

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
225
Patients
161
Total drug cost
$12,150
Drug Type Claims Patients Total cost
Cefuroxime (Cefuroxime Axetil) Brand 47 47 $620
Amoxicillin-Clavulanate Potass (Amoxicillin/Potassium Clav) Brand 29 29 $277
Prednisone Generic 20 20 $126
Clopidogrel (Clopidogrel Bisulfate) Brand 19 13 $73
Furosemide Generic 17 15 $34
Eliquis (Apixaban) Brand 16 13 $9,824
Amlodipine Besylate Generic 14 0 $87
Metoprolol Succinate Generic 14 12 $122
Potassium Chloride Generic 13 12 $567
Tamsulosin Hcl Generic 13 0 $112

Frequently asked questions

Auto-generated from federal data
What is Dr. Bang Nguyen's medical specialty?
Dr. Bang Nguyen practices Hospitalist Physician in Fullerton, CA.
Where does Dr. Bang Nguyen practice?
Dr. Bang Nguyen practices at 101 E Valencia Mesa Dr, Fullerton, CA 928353809. Office phone: 7144475027.
What is Dr. Bang Nguyen's NPI?
Dr. Bang Nguyen's National Provider Identifier (NPI) is 1861477044, issued by NPPES.
Does Dr. Bang Nguyen accept Medicare assignment?
Yes. Dr. Bang Nguyen accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Bang Nguyen commonly perform?
Top Medicare-reported procedures in 2023: Subsequent hospital care with moderate levelof medical decision making (HCPCS 99232); Hospital discharge day management (HCPCS 99238); Subsequent hospital care with straightforward or low level of medical decision making (HCPCS 99231). Source: CMS Medicare Physician & Other Practitioners file.