Doctor profile · Federal record

Dr. Guillermo Valenzuela, MD

Maternal & Fetal Medicine Physician (CMS: Obstetrics/Gynecology) · Colton, CA

  • NPI 1730263484
  • Accepts Medicare
  • 52 yrs in practice
  • Male
  • Solo practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
400 N Pepper Ave, Mob 206
Colton, CA 923241801
(909) 580-6333
fax (909) 580-3289
Mailing address
Po Box 1762
Colton, CA 923240857

Credentials & registration

NPPES · NUCC
NPI registered
October 2006 — 20 yrs on file
Profile last updated
May 29, 2020
Year of graduation
1974 — 52 yrs since
Specialty taxonomy
207VM0101X — NUCC code
State license (1)
California #A38671

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1730263484. Last verified May 11, 2026.

Open Payments

Industry payments received

CMS Open Payments
All-time total
$72
Transactions
4
Manufacturers
1
Payer (manufacturer) Industry Txns Amount
GlaxoSmithKline, LLC. 4 $71.74

By nature of payment

Food and Beverage
$72

Frequently asked questions

Auto-generated from federal data
What is Dr. Guillermo Valenzuela's medical specialty?
Dr. Guillermo Valenzuela practices Maternal & Fetal Medicine Physician in Colton, CA.
Where does Dr. Guillermo Valenzuela practice?
Dr. Guillermo Valenzuela practices at 400 N Pepper Ave, Colton, CA 923241801. Office phone: 9095806333.
What is Dr. Guillermo Valenzuela's NPI?
Dr. Guillermo Valenzuela's National Provider Identifier (NPI) is 1730263484, issued by NPPES.
Does Dr. Guillermo Valenzuela accept Medicare assignment?
Yes. Dr. Guillermo Valenzuela accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.