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
- 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
- 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
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1730263484. Last verified May 11, 2026.Open Payments
Industry payments received
All-time total
$72
Transactions
4
Manufacturers
1
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| GlaxoSmithKline, LLC. | 4 | $71.74 |
By nature of payment
Frequently asked questions
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.