Theodore Sy, MD
Gastroenterology Internal Medicine
Theodore Sy, MD practices as part of a group gastroenterologist practice in Laguna Hills, CA. He graduated from Northwestern University Feinberg Medical School in 2003 and has 23+ years of clinical experience. Gastroenterologists diagnose and treat digestive system disorders including GERD, irritable bowel syndrome (IBS), and more.
Data updated 2022-02-07 on CMS NPPES
Patient Reviews
No patient reviews yet. If you've seen Theodore Sy, your feedback helps other patients.
Review PolicyAll feedback is moderated before publishing. We verify reviewer identity where possible and enforce a one-review-per-provider policy. Full guidelines →
Background & Specialty
Education, training, and specialty classification from CMS NPPES and Medicare records.
Gastroenterologists diagnose and treat digestive system disorders including GERD, irritable bowel syndrome (IBS), inflammatory bowel disease (Crohn's, ulcerative colitis), liver disease, pancreatitis, and colon polyps. They perform endoscopies and colonoscopies.
Taxonomy: 207RG0100X
Education & Training
Northwestern University Feinberg Medical School (Class of 2003)
Virtual Internal Medicine Care With Theodore Sy
NPPES records indicate this provider offers telehealth services. Contact the office to confirm availability and scheduling.
Schedule a virtual visit with Theodore Sy for follow-ups, medication reviews, and ongoing care — no travel to Laguna Hills required. The office sends a secure video link before your appointment. Most visits take 15–30 minutes.
Frequently Asked Questions
Common questions about Theodore Sy
NPI records show Dr. Sy as active with telehealth listed in Laguna Hills, CA. Note: NPI status alone doesn't confirm open availability — always call ahead. Phone: (949) 448-0656.
Is this your profile?
Verify credentials, update practice details, and manage telehealth.
Medical Disclaimer: NPI Telehealth is a provider directory for informational purposes only. This page does not constitute medical advice, diagnosis, or treatment recommendations. Provider data is sourced from the CMS NPPES federal registry and public Medicare datasets. NPI Telehealth does not verify clinical qualifications beyond federal records. Data may not reflect real-time availability — always contact the provider's office directly to confirm details before seeking care.
Contact Theodore Sy
Practice Location
26538 Moulton Pkwy Ste 38e, Laguna Hills, CA 92653
This is a provider directory. Contact the office directly to schedule appointments.
Related Providers
Gastroenterology Internal Medicine in CA
See allJohn Kane, MD
San Francisco, CA
Mahmood Pazirandeh, MD, FACP, FACR
San Diego, CA
Yzhar Charuzi, M.D
Los Angeles, CA