Doctor profile · Federal record

Dr. Esther Chong

Medical Oncology Physician (CMS: Medical Oncology) · Internal Medicine Physician · Portland, OR

  • NPI 1689101396
  • Accepts Medicare
  • 5 yrs in practice
  • Licensed in 2 states
  • Female
  • Solo practice
  • No sanctions

Practice & contact

Operates at 2 locations .

NPPES Updated May 11, 2026
Primary practice
3303 S Bond Ave
Portland, OR 972394501
(503) 494-6594
fax (503) 494-5385
Additional location
11234 Anderson St
Loma Linda, CA 923542804
(909) 558-4000
Mailing address
1400 Sw 5Th Ave Ste 500
Portland, OR 972015537

Credentials & registration

NPPES · NUCC
NPI registered
May 2017 — 9 yrs on file
Profile last updated
July 15, 2025
Year of graduation
2021 — 5 yrs since
Specialty taxonomy
207RX0202X — NUCC code
State licenses (2)
Oregon #MD219107 · California #A161243

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1689101396. Last verified May 11, 2026.

Open Payments

Industry payments received

CMS Open Payments
All-time total
$614
Transactions
17
Manufacturers
8
Payer (manufacturer) Industry Txns Amount
PFIZER INC. 2 $154.16
Janssen Biotech, Inc. 6 $139.62
Janssen Scientific Affairs, LLC 1 $91.85
Novartis Pharmaceuticals Corporation 3 $80.83
Merck Sharp & Dohme LLC 2 $47.80
Lilly USA, LLC 1 $46.70
Regeneron Healthcare Solutions, Inc. 1 $38.60
E.R. Squibb & Sons, L.L.C. 1 $14.16

By nature of payment

Food and Beverage
$567
Education
$47

Frequently asked questions

Auto-generated from federal data
What is Dr. Esther Chong's medical specialty?
Dr. Esther Chong practices Medical Oncology Physician in Portland, OR.
Where does Dr. Esther Chong practice?
Dr. Esther Chong practices at 3303 S Bond Ave, Portland, OR 972394501. Office phone: 5034946594.
What is Dr. Esther Chong's NPI?
Dr. Esther Chong's National Provider Identifier (NPI) is 1689101396, issued by NPPES.
Does Dr. Esther Chong accept Medicare assignment?
Yes. Dr. Esther Chong accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.

Methodology · sources used on this page

All figures on this page come from publicly available federal datasets. We do not edit, score, or summarise the underlying data. Profile generated May 29, 2026.

NPPES Provider identifiers and practice info May 11, 2026
Open Payments Industry payments to providers (Sunshine Act) May 11, 2026
Medicare Procedure Utilization Services and allowed amounts by HCPCS May 11, 2026
Medicare Part D Prescription drug claims May 11, 2026
CMS MIPS Quality performance scores May 11, 2026
OIG LEIE Federal exclusion / sanctions list May 11, 2026

Information based on publicly available federal data. Not medical advice. Report incorrect data ›