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New Medical Practice Businesses in Ontario, CA

3 medical practice businesses recently registered in Ontario, California.

Updated August 19, 2026 · Most recent business filing Mar 21, 2026

3
Total Filings
Mar 21, 2026
Most Recent
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About Medical Practice Businesses in Ontario

This page lists new medical practice businesses registered in Ontario, California. We currently track 3, sourced directly from the California Division of Corporations and refreshed daily as new medical practice companies file.

Recent additions include Kirollos E. Zaki, DO, Osunwa Jr Anesthesia, and Dr Jimmy Bae Chiropractic Group. The most recent medical practice business filing was on Mar 21, 2026.

Each entry shows the filing date and, where we can verify it, the owner name and contact details. If you sell to medical practice businesses in Ontario, this is one of the freshest prospect lists in the market.

Use recent medical practice registrations in Ontario as a timing signal, then qualify each company by formation date, website, and verified contact availability.

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All Filings

Kirollos E. Zaki, DO

Mar 21, 2026
Medical PracticeVerifiedOntario, CA

Kirollos E. Zaki, DO, P.C. is a medical practice operated by Dr. Kirollos Zaki, an internist based in Riverside, CA. Candidate W1 provides an NPI profile confirming his specialty and office address at 3660 Park Sierra Dr Ste 208, Riverside, CA 92505.

Osunwa Jr Anesthesia

Oct 17, 2025
Medical PracticeVerifiedOntario, CA

Dr. Paul Osunwa Jr is an anesthesiologist practicing in Corona, CA. The LLC OSUNWA JR ANESTHESIA likely serves as his professional entity. He is listed on multiple doctor directories with an address at 800 S Main St, Corona, CA, and is accepting new patients.

Dr Jimmy Bae Chiropractic Group

Jun 6, 2025
Medical PracticeVerifiedOntario, CA

Dr Jimmy Bae Chiropractic Group Inc is a chiropractic clinic located at 4345 E Lowell St Suite A, Ontario, CA. The website offers DOT physicals, pain and injury chiropractic care, and medical card services. Contact phone and email are listed, indicating an active local practice.

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