Doctor profile · Federal record

Dr. Katherine Ko, NP

Family Nurse Practitioner · Diamond Bar, CA

  • NPI 1679038103
  • 7 yrs on file
  • Female
  • Solo practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
2705 S Diamond Bar Blvd Ste 100
Diamond Bar, CA 917653557
(626) 965-1988
Mailing address
21233 Corral CT
Walnut, CA 917892031

Credentials & registration

NPPES · NUCC
NPI registered
February 2019 — 7 yrs on file
Specialty taxonomy
363LF0000X — NUCC code
State license (1)
California #95009181

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1679038103. Last verified May 11, 2026.

Open Payments

Industry payments received

CMS Open Payments
All-time total
$26
Transactions
1
Manufacturers
1
Payer (manufacturer) Industry Txns Amount
GlaxoSmithKline, LLC. 1 $26.10

By nature of payment

Food and Beverage
$26

Frequently asked questions

Auto-generated from federal data
What is Dr. Katherine Ko's medical specialty?
Dr. Katherine Ko practices Family Nurse Practitioner in Diamond Bar, CA.
Where does Dr. Katherine Ko practice?
Dr. Katherine Ko practices at 2705 S Diamond Bar Blvd Ste 100, Diamond Bar, CA 917653557. Office phone: 6269651988.
What is Dr. Katherine Ko's NPI?
Dr. Katherine Ko's National Provider Identifier (NPI) is 1679038103, issued by NPPES.