Doctor profile · Federal record

Dr. Leopoldo Alonzo, MD

Obstetrics & Gynecology Physician · Fontana, CA

  • NPI 1730306218
  • 19 yrs on file
  • Male
  • Group practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
9961 Sierra Ave
Fontana, CA 923356720
(909) 427-3910

Credentials & registration

NPPES · NUCC
NPI registered
April 2007 — 19 yrs on file
Profile last updated
September 23, 2008
Specialty taxonomy
207V00000X — NUCC code
State license (1)
California #G79776

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1730306218. Last verified May 11, 2026.

Open Payments

Industry payments received

CMS Open Payments
All-time total
$80
Transactions
1
Manufacturers
1
Payer (manufacturer) Industry Txns Amount
ABBVIE INC. 1 $80.00

By nature of payment

Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program
$80

Frequently asked questions

Auto-generated from federal data
What is Dr. Leopoldo Alonzo's medical specialty?
Dr. Leopoldo Alonzo practices Obstetrics & Gynecology Physician in Fontana, CA.
Where does Dr. Leopoldo Alonzo practice?
Dr. Leopoldo Alonzo practices at 9961 Sierra Ave, Fontana, CA 923356720. Office phone: 9094273910.
What is Dr. Leopoldo Alonzo's NPI?
Dr. Leopoldo Alonzo's National Provider Identifier (NPI) is 1730306218, issued by NPPES.

Methodology · sources used on this page

All figures on this page come from publicly available federal datasets. We do not edit, score, or summarise the underlying data. Profile generated May 26, 2026.

NPPES Provider identifiers and practice info May 11, 2026
Open Payments Industry payments to providers (Sunshine Act) May 11, 2026
Medicare Procedure Utilization Services and allowed amounts by HCPCS May 11, 2026
Medicare Part D Prescription drug claims May 11, 2026
CMS MIPS Quality performance scores May 11, 2026
OIG LEIE Federal exclusion / sanctions list May 11, 2026

Information based on publicly available federal data. Not medical advice. Report incorrect data ›