Doctor profile · Federal record

Dr. Matthew Lee, D.O.

Medical Oncology Physician (CMS: Hematology/Oncology) · San Mateo, CA

  • NPI 1326589581
  • Accepts Medicare
  • 9 yrs in practice
  • Male
  • Solo practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
218 de Anza Blvd
San Mateo, CA 944023913
(650) 341-9131
Mailing address
4445 Magnolia Ave Riverside Community Hospital, Gme Office
Riverside, CA 92501

Credentials & registration

NPPES · NUCC
NPI registered
March 2017 — 9 yrs on file
Profile last updated
July 22, 2024
Year of graduation
2017 — 9 yrs since
Specialty taxonomy
207RX0202X — NUCC code
State license (1)
California #20A17254

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1326589581. Last verified May 11, 2026.

Open Payments

Industry payments received

CMS Open Payments
All-time total
$710
Transactions
15
Manufacturers
11
Payer (manufacturer) Industry Txns Amount
Daiichi Sankyo INC. 4 $163.13
Janssen Scientific Affairs, LLC 1 $125.00
Janssen Biotech, INC. 1 $121.84
Alexion Pharmaceuticals, INC. 1 $112.68
Novartis Pharmaceuticals Corporation 2 $51.28
Merck Sharp & Dohme LLC 1 $29.79
Eisai INC. 1 $24.80
Pfizer INC. 1 $24.38
Sobi, INC 1 $20.48
Emd Serono, INC. 1 $19.52
Genentech USA, INC. 1 $17.05

By nature of payment

Food and Beverage
$610
Education
$100

Hospital affiliations

CMS Hospital Compare

Frequently asked questions

Auto-generated from federal data
What is Dr. Matthew Lee's medical specialty?
Dr. Matthew Lee practices Medical Oncology Physician in San Mateo, CA.
Where does Dr. Matthew Lee practice?
Dr. Matthew Lee practices at 218 de Anza Blvd, San Mateo, CA 944023913. Office phone: 6503419131.
What is Dr. Matthew Lee's NPI?
Dr. Matthew Lee's National Provider Identifier (NPI) is 1326589581, issued by NPPES.
Does Dr. Matthew Lee accept Medicare assignment?
Yes. Dr. Matthew Lee accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.