Doctor profile · Federal record

Dr. Katherine Nielsen

Pediatrics Physician · Torrance, CA

  • NPI 1598129249
  • 10 yrs on file
  • Female
  • Group practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
1000 W Carson St
Torrance, CA 905022004
(310) 222-2343
Mailing address
4650 W Sunset Blvd
Los Angeles, CA 900276062

Credentials & registration

NPPES · NUCC
NPI registered
April 2016 — 10 yrs on file
Profile last updated
September 27, 2019
Specialty taxonomy
208000000X — NUCC code
State license (1)
California #A150744

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1598129249. Last verified May 11, 2026.

Open Payments

Industry payments received

CMS Open Payments
All-time total
$94
Transactions
4
Manufacturers
4
Payer (manufacturer) Industry Txns Amount
GlaxoSmithKline, LLC. 1 $29.67
Sanofi Pasteur INC. 1 $26.09
Sanofi-Aventis U.S. LLC 1 $23.08
Merck Sharp & Dohme LLC 1 $15.62

By nature of payment

Food and Beverage
$94

Frequently asked questions

Auto-generated from federal data
What is Dr. Katherine Nielsen's medical specialty?
Dr. Katherine Nielsen practices Pediatrics Physician in Torrance, CA.
Where does Dr. Katherine Nielsen practice?
Dr. Katherine Nielsen practices at 1000 W Carson St, Torrance, CA 905022004. Office phone: 3102222343.
What is Dr. Katherine Nielsen's NPI?
Dr. Katherine Nielsen's National Provider Identifier (NPI) is 1598129249, issued by NPPES.