Doctor profile · Federal record

Dr. Loc Bui, M.D.

Internal Medicine Physician (CMS: Internal Medicine) · Westminster, CA

  • NPI 1023081387
  • Accepts Medicare
  • 54 yrs in practice
  • Male
  • Group practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
8900 Bolsa Ave, Suite B
Westminster, CA 926835475
(714) 897-2623
fax (714) 379-0343

Credentials & registration

NPPES · NUCC
NPI registered
February 2006 — 20 yrs on file
Profile last updated
May 13, 2020
Year of graduation
1972 — 54 yrs since
Specialty taxonomy
207R00000X — NUCC code
State license (1)
California #A50198
Medicaid
CA #00A501980

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1023081387. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
1,391
Distinct HCPCS
8
Medicare allowed
$143,597
HCPCS Description Services Patients Avg allowed
99214 Established patient office or other outpatient visit, 30-39 minutes 775 91 $139
99213 Established patient office or other outpatient visit, 20-29 minutes 246 66 $98
36415 Insertion of needle into vein for collection of blood sample 139 68 $8
93000 Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report 61 43 $16
G0008 Administration of influenza virus vaccine 57 56 $33
90688 Influenza vaccine, quadrivalent, 0.5 ml dosage 56 56 $20
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit 40 40 $140
99212 Established patient office or other outpatient visit, 10-19 minutes 17 14 $62

In context: peer comparison

Among 13 peers in this city , average services per provider: 331. This provider delivers 4.2× the peer median.

Open Payments

Industry payments received

CMS Open Payments
All-time total
$300
Transactions
3
Manufacturers
2
Payer (manufacturer) Industry Txns Amount
Gilead Sciences, Inc. 2 $271.63
Exact Sciences Corporation 1 $28.30

By nature of payment

Food and Beverage
$300

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
2,507
Patients
574
Total drug cost
$46,993
Drug Type Claims Patients Total cost
Atorvastatin Calcium Generic 388 85 $5,822
Losartan Potassium Generic 323 65 $5,741
Amlodipine Besylate Generic 311 64 $4,399
Metformin Hcl Generic 238 39 $3,081
Celecoxib Generic 201 58 $7,146
Omeprazole Generic 193 51 $2,389
Tamsulosin Hcl Generic 127 27 $2,794
Metoprolol Succinate Generic 115 22 $2,041
Levothyroxine Sodium Generic 102 22 $2,512
Triamcinolone Acetonide Generic 94 42 $1,579

Frequently asked questions

Auto-generated from federal data
What is Dr. Loc Bui's medical specialty?
Dr. Loc Bui practices Internal Medicine Physician in Westminster, CA.
Where does Dr. Loc Bui practice?
Dr. Loc Bui practices at 8900 Bolsa Ave, Westminster, CA 926835475. Office phone: 7148972623.
What is Dr. Loc Bui's NPI?
Dr. Loc Bui's National Provider Identifier (NPI) is 1023081387, issued by NPPES.
Does Dr. Loc Bui accept Medicare assignment?
Yes. Dr. Loc Bui accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Loc Bui commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99214); Established patient office or other outpatient visit (HCPCS 99213); Insertion of needle into vein for collection of blood sample (HCPCS 36415). Source: CMS Medicare Physician & Other Practitioners file.