Doctor profile · Federal record

Dr. Yio-Fan Hsu, M.D.

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

  • NPI 1588989529
  • Accepts Medicare
  • 16 yrs in practice
  • Female
  • Solo practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
2501 E Chapman Ave, St. Joseph Heritage Medical Group
Orange, CA 928693204
(714) 633-1011
fax (714) 633-4883

Credentials & registration

NPPES · NUCC
NPI registered
April 2010 — 16 yrs on file
Profile last updated
November 3, 2021
Year of graduation
2010 — 16 yrs since
Specialty taxonomy
207R00000X — NUCC code
State license (1)
California #A118854

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1588989529. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
656
Distinct HCPCS
6
Medicare allowed
$65,806
HCPCS Description Services Patients Avg allowed
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 404 150 $83
99238 Hospital discharge day management, 30 minutes or less 82 80 $86
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 65 65 $183
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 50 37 $125
99239 Hospital discharge day management, more than 30 minutes 32 32 $121
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 23 23 $137

In context: peer comparison

Among 42 peers in Orange Internal Medicine Physician, average services per provider: 103. This provider delivers 6.4× the peer median.

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
63
Patients
62
Total drug cost
$294
Drug Type Claims Patients Total cost
Amoxicillin-Clavulanate Potass (Amoxicillin/Potassium Clav) Brand 19 18 $108
Azithromycin Generic 18 18 $69
Cephalexin Generic 15 15 $80
Furosemide Generic 11 11 $37

Frequently asked questions

Auto-generated from federal data
What is Dr. Yio-Fan Hsu's medical specialty?
Dr. Yio-Fan Hsu practices Internal Medicine Physician in Orange, CA.
Where does Dr. Yio-Fan Hsu practice?
Dr. Yio-Fan Hsu practices at 2501 E Chapman Ave, Orange, CA 928693204. Office phone: 7146331011.
What is Dr. Yio-Fan Hsu's NPI?
Dr. Yio-Fan Hsu's National Provider Identifier (NPI) is 1588989529, issued by NPPES.
Does Dr. Yio-Fan Hsu accept Medicare assignment?
Yes. Dr. Yio-Fan Hsu accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Yio-Fan Hsu 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); Initial hospital care with moderate level of medical decision making (HCPCS 99223). Source: CMS Medicare Physician & Other Practitioners file.