Doctor profile · Federal record

Dr. Kathy Lien, RN, PNP

Nurse Practitioner · San Carlos, CA

  • NPI 1639840390
  • 5 yrs on file
  • Female
  • Solo practice
  • No sanctions

Practice & contact

Operates at 2 locations .

NPPES Updated May 11, 2026
Primary practice
301 Industrial RD
San Carlos, CA 940702603
(650) 596-4000
Additional location
5504 Monterey Hwy
San Jose, CA 951381529
(510) 770-8133
Mailing address
Po Box 276950
Sacramento, CA 958276950

Credentials & registration

NPPES · NUCC
NPI registered
September 2021 — 5 yrs on file
Profile last updated
November 21, 2024
Specialty taxonomy
363L00000X — NUCC code
State license (1)
California #95022454

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1639840390. Last verified May 11, 2026.

Open Payments

Industry payments received

CMS Open Payments
All-time total
$123
Transactions
6
Manufacturers
4
Payer (manufacturer) Industry Txns Amount
Exact Sciences Corporation 3 $51.11
PFIZER INC. 1 $31.45
Gilead Sciences, Inc. 1 $26.24
ViiV Healthcare Company 1 $13.92

By nature of payment

Food and Beverage
$123

Frequently asked questions

Auto-generated from federal data
What is Dr. Kathy Lien's medical specialty?
Dr. Kathy Lien practices Nurse Practitioner in San Carlos, CA.
Where does Dr. Kathy Lien practice?
Dr. Kathy Lien practices at 301 Industrial RD, San Carlos, CA 940702603. Office phone: 6505964000.
What is Dr. Kathy Lien's NPI?
Dr. Kathy Lien's National Provider Identifier (NPI) is 1639840390, issued by NPPES.