Andrew Mark Gregg, MD PHD
Gastroenterology Internal Medicine
Andrew Mark Gregg is a Gastroenterology Internal Medicine specialist based in Thousand Oaks, CA with over 7 years of clinical experience. Medicare-enrolled per CMS records and offers virtual telehealth visits.
Also practices: INTERNAL MEDICINE
Andrew Mark Gregg, MD PHD runs an independent gastroenterologist practice in Thousand Oaks, CA. He has been in practice for 7+ years. Gastroenterologists diagnose and treat digestive system disorders including GERD, irritable bowel syndrome (IBS), and more.
Older · 292dNPPES updated 2025-08-04 · verify NPI on CMS · Verify license at Medical Board of California
Contact & Location
Practice Location
248 Hampshire Rd Ste 200, Thousand Oaks, CA 91361-2401
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Background & Specialty
Education, training, and specialty classification from CMS NPPES and Medicare records.
Board certified · Aug 3, 2025
Self-reported via NPPES
7 years in practice
Established
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
Mailing address
5767 W Century Blvd Ste 400, Los Angeles, CA 90045-5631
Differs from practice location
Primary hospital affiliation: Acute Care Hospitals
CMS Certification Number: 210005
View hospital on Medicare Care CompareVirtual Internal Medicine Care With Andrew Mark Gregg
NPPES records indicate this provider offers telehealth services. Contact the office to confirm availability and scheduling.
Schedule a virtual visit with Andrew Mark Gregg for follow-ups, medication reviews, and ongoing care — no travel to Thousand Oaks required. The office sends a secure video link before your appointment. Most visits take 15–30 minutes. Medicare enrolled per CMS records.
Frequently Asked Questions
Common questions about Andrew Mark Gregg
NPI records show Dr. Gregg as active with telehealth listed in Thousand Oaks, CA. NPI status alone doesn't confirm open availability — call the office to confirm. Phone: (805) 370-0127.
Sourced from CMS NPPES · OIG LEIE · CMS Medicare Part D. See Data Methodology.
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Contact Andrew Mark Gregg
Practice Location
248 Hampshire Rd Ste 200, Thousand Oaks, CA 91361-2401
Mailing Address
5767 W Century Blvd Ste 400, Los Angeles, CA 90045-5631
This is a provider directory. Contact the office directly to schedule appointments.
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