Doctor profile · Federal record

Dr. Gregory Wong, M.D.

Pediatric Gastroenterology Physician (CMS: Gastroenterology) · Pediatric Gastroenterology Physician · Orange, CA

  • NPI 1386977288
  • Accepts Medicare
  • 19 yrs in practice
  • Licensed in 2 states
  • Male
  • Solo practice
  • No sanctions

Practice & contact

Operates at 2 locations .

NPPES Updated May 11, 2026
Primary practice
1201 W la Veta Ave
Orange, CA 928684203
(714) 509-4099
fax (714) 509-3301
Additional location
3030 Childrens Way
San Diego, CA 921234232
(858) 966-4003

Credentials & registration

NPPES · NUCC
NPI registered
September 2009 — 17 yrs on file
Profile last updated
February 24, 2021
Year of graduation
2007 — 19 yrs since
Specialty taxonomy
2080P0206X — NUCC code
State licenses (2)
California #A124939 · Texas #N7765

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1386977288. Last verified May 11, 2026.

Open Payments

Industry payments received

CMS Open Payments
All-time total
$577
Transactions
22
Manufacturers
13
Payer (manufacturer) Industry Txns Amount
Alcresta Therapeutics, INC. 4 $93.67
Baxter Healthcare 2 $72.81
Takeda Pharmaceuticals U.S.A., INC. 2 $62.96
Vertex Pharmaceuticals Incorporated 3 $56.36
Qol Medical, LLC 2 $54.29
Mirum Pharmaceuticals, INC. 2 $46.69
Sandoz INC. 1 $39.37
Genzyme Corporation 1 $34.72
Aimmune Therapeutics, INC. 1 $27.53
Albireo Pharma, INC. 1 $23.80
Celltrion USA INC. 1 $22.74
Digestive Care, INC. 1 $22.11
Olympus America INC. 1 $20.26

By nature of payment

Food and Beverage
$577

Frequently asked questions

Auto-generated from federal data
What is Dr. Gregory Wong's medical specialty?
Dr. Gregory Wong practices Pediatric Gastroenterology Physician in Orange, CA.
Where does Dr. Gregory Wong practice?
Dr. Gregory Wong practices at 1201 W la Veta Ave, Orange, CA 928684203. Office phone: 7145094099.
What is Dr. Gregory Wong's NPI?
Dr. Gregory Wong's National Provider Identifier (NPI) is 1386977288, issued by NPPES.
Does Dr. Gregory Wong accept Medicare assignment?
Yes. Dr. Gregory Wong accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.