Doctor profile · Federal record

Dr. Loan Hsieh

Pediatrics Physician · Orange, CA

  • NPI 1770774341
  • 19 yrs on file
  • Female
  • Group practice
  • No sanctions

Practice & contact

Operates at 2 locations .

NPPES Updated May 11, 2026
Primary practice
455 S Main St
Orange, CA 928683835
(714) 532-8826
fax (714) 532-8771
Additional location
1010 W la Veta Ave
Orange, CA 928684300
(714) 221-1200
fax (714) 221-1299
Mailing address
2670 N Main St Ste 150
Santa Ana, CA 927056658

Credentials & registration

NPPES · NUCC
NPI registered
August 2007 — 19 yrs on file
Profile last updated
July 21, 2022
Specialty taxonomy
208000000X — NUCC code
State license (1)
California #A82088

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1770774341. Last verified May 11, 2026.

Open Payments

Industry payments received

CMS Open Payments
All-time total
$112
Transactions
5
Manufacturers
4
Payer (manufacturer) Industry Txns Amount
Cranial Technologies, INC 2 $37.28
Alexion Pharmaceuticals, INC. 1 $30.96
Vertex Pharmaceuticals Incorporated 1 $27.68
Merck Sharp & Dohme LLC 1 $15.92

By nature of payment

Food and Beverage
$112

Frequently asked questions

Auto-generated from federal data
What is Dr. Loan Hsieh's medical specialty?
Dr. Loan Hsieh practices Pediatrics Physician in Orange, CA.
Where does Dr. Loan Hsieh practice?
Dr. Loan Hsieh practices at 455 S Main St, Orange, CA 928683835. Office phone: 7145328826.
What is Dr. Loan Hsieh's NPI?
Dr. Loan Hsieh's National Provider Identifier (NPI) is 1770774341, issued by NPPES.