Doctor profile · Federal record

Dr. Yoonjung Hong, DDS

Oral and Maxillofacial Surgery (Dentist) · General Practice Dentistry · Simi Valley, CA

  • NPI 1104322288
  • 8 yrs on file
  • Female
  • Group practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
1720 E Los Angeles Ave Ste 224
Simi Valley, CA 930652098
(805) 581-0144
Mailing address
212 N Marengo Ave Apt C
Alhambra, CA 918016726

Credentials & registration

NPPES · NUCC
NPI registered
April 2018 — 8 yrs on file
Profile last updated
July 6, 2021
Specialty taxonomy
1223S0112X — NUCC code
State license (1)
California #102258

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1104322288. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
250
Distinct HCPCS
10
Medicare allowed
$82,243
HCPCS Description Services Patients Avg allowed
70140 X-ray of face bones, 1-2 views 43 18 $35
99211 Office or other outpatient visit for the evaluation and management of established patient that may not require presence of healthcare professional 43 19 $26
40812 Removal of growth of mouth with simple repair 25 14 $160
21210 Repair of nasal or cheek bone with bone graft 24 16 $1,897
99213 Established patient office or other outpatient visit, 20-29 minutes 24 15 $98
70100 X-ray of part of lower jaw, 1-4 views 23 11 $41
12011 Simple repair of surface wound of face, ears, eyelids, nose, lips, or mouth, 2.5 cm or less 16 11 $63
21208 Incision and repair of bony defect of cheek bone with repositioning of bony segment 15 13 $1,505
40830 Repair of lacerated mouth, 2.5 cm or less 14 12 $129
70486 Ct scan of face without contrast 12 12 $43

In context: peer comparison

Among 1 peers in Simi Valley Oral and Maxillofacial Surgery (Dentist), average services per provider: 22. This provider delivers 11× the peer median.

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
127
Patients
84
Total drug cost
$321
Drug Type Claims Patients Total cost
Amoxicillin Generic 81 46 $190
Ibuprofen Generic 46 38 $131

Frequently asked questions

Auto-generated from federal data
What is Dr. Yoonjung Hong's medical specialty?
Dr. Yoonjung Hong practices Oral and Maxillofacial Surgery (Dentist) in Simi Valley, CA.
Where does Dr. Yoonjung Hong practice?
Dr. Yoonjung Hong practices at 1720 E Los Angeles Ave Ste 224, Simi Valley, CA 930652098. Office phone: 8055810144.
What is Dr. Yoonjung Hong's NPI?
Dr. Yoonjung Hong's National Provider Identifier (NPI) is 1104322288, issued by NPPES.
What procedures does Dr. Yoonjung Hong commonly perform?
Top Medicare-reported procedures in 2023: X-ray of face bones, 1-2 views (HCPCS 70140); Office or other outpatient visit for the evaluation and management of established patient that may not require presence of healthcare professional (HCPCS 99211); Removal of growth of mouth with simple repair (HCPCS 40812). Source: CMS Medicare Physician & Other Practitioners file.