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Yes, Dr. Jonnel R. Constantino is accepting new patients at this office.
2295 S. Vineyard Ave, Ontario, CA 91761
Please contact the doctor’s office to inquire about insurance.
Dr. Constantino has one office in California where he specializes in Internal Medicine.
Dr. Constantino works with twenty-six doctors including Dr. Paul Robb and Dr. Richard Prudencio.
The specialty of internal medicine is an area of primary care for adults. Dr. Constantino specializes in diagnosing and treating cross-system illnesses that may affect multiple organ systems. Dr. Constantino can also refer patients to specialists when medically necessary. For example, patients with severe heart problems may be referred to a cardiologist for additional diagnostic tests or treatments.