NCMA Digestive Health Center

Monday, Sept. 28: NCMA Digestive Health Center is temporarily closed. Our office may contact you about rescheduling a telehealth appointment. Northern California Medical Associates’ Digestive Health Center is dedicated to the prevention, diagnosis, treatment and management of chronic gastrointestinal illnesses and digestive diseases. Our providers are A. Michael Lustberg, MD, and Kim Casarotti, FNP.

NCMA Digestive Health Center


NCMA Digestive Health Center
1701 4th Street
Santa Rosa, CA 95404
(707) 569-3234

Office hours

Day of the WeekHours
Monday8:00 AM - 5:00 PM
Tuesday8:00 AM - 5:00 PM
Wednesday8:00 AM - 5:00 PM
Thursday8:00 AM - 5:00 PM
Friday8:00 AM - 5:00 PM
Day of the WeekHours


A. Michael Lustberg, MD
A. Michael Lustberg, MD

Gastroenterology. Medical interests include esophageal disorders such as reflux and difficulty swallowing; colorectal cancer screening, therapeutic endoscopy, nutrition and endoscopic management of weight loss.

Kim Casarotti, FNP
Kim Casarotti, FNP

NCMA Digestive Health Center & NCMA Family and Internal Medicine — Petaluma

Frequently Asked Questions

What should I see a gastroenterologist for?

NCMA Digestive Health Center provides comprehensive coordinated care for patients with many types of digestive conditions, including:
abdominal pain/discomfort/bloating,
celiac disease,
chronic hepatitis,
colorectal cancer,
gallbladder disease,
heartburn (gastroesophageal reflux disease or GERD),
inflammatory bowel disease (Crohn's disease, ulcerative colitis),
irritable bowel syndrome,
liver disease,
small intestinal bacterial overgrowth,
ulcers and more.

Contact our office at 707-569-3234 or use our "request an appointment online" form to schedule an appointment.

Do you offer telehealth / telemedicine appointments?

Yes, we do. Contact our office at 707-569-3234 to see if a telemedicine video conference appointment may be right for you.

Are you accepting new patients?

Yes, we are accepting new patients. Contact our office at 707-569-3234 or use our "request an appointment online" form to schedule an appointment.

What insurance plans are accepted by Northern California Medical Associates

We currently accept the following insurance plans (subject to change):
• Aetna (Direct)
• Anthem Blue Cross of California and Prudent Buyer Network
• Beech Street Corporation
• Blue Shield of California
• Humana / Choice Care Network
• California Foundation for Medical Care (CFMC)
• CIGNA / Great West Healthcare
• Coventry / First Health Network
• Delta Health — Amy’s Kitchen
• HealthNet
• Healthsmart
• Medicare
• Meritage Medical Network
• MultiPlan/PHCS, Inc.
• Partnership HealthPlan of California
• Railroad Medicare
• UHC AARP Medicare Complete through Meritage (new in 2020)
• United Healthcare
Verify coverage with your health plan.

Where are NCMA offices located?

Northern California Medical Associates offices are situated in Sonoma and Mendocino counties. We have offices in Santa Rosa, Petaluma, Healdsburg, Sonoma, Sebastopol, Mendocino and Fort Bragg.

Who are NCMA’s physicians?

Find a list of our physician providers and learn about their practice areas of emphasis here:

Northern California Medical Associates

Northern California Medical Associates (NCMA) has been a leading association of medical practitioners in the North Bay Area since 1975, when Cardiology Associates of Santa Rosa, Inc. first opened its doors. NCMA remains committed to expanding its expertise and scope of care by continuing to merge with several private practices to better serve our patients in Sonoma and Mendocino counties. In addition to our family medicine and internal medicine practices, NCMA’s specialties include: cardiology, cardiothoracic surgery, ENT / otolaryngology / head & neck surgery, foot & ankle medicine / podiatry, gastroenterology, osteopathic neuromusculoskeletal medicine, rheumatology / infusion services, vein disorder treatment and medical weight management.

Nearby NCMA providers & locations

Find a Location