Jason L. Umphress, MD
Gastroenterology • Woodland, CA
About
Jason L. Umphress, MD is a gastroenterologist in Woodland, CA who specializes in managing gastrointestinal, liver, and pancreaticobiliary disease in clinic and hospital settings. He is trained in endoscopy for diagnosis and treatment of gastrointestinal disease and is credentialed at Dignity Health - Woodland Memorial Hospital.
Clinic Type
Gastroenterology
Address
Woodland, CA
Phone
530-668-2600
MediaInquiries@CommonSpirit.org
Opening Hours
Not published — contact the clinic to confirm hours.
Services Offered
Team
Insurance & Payment
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Languages Spoken
Social Media
Photos
What Patients Say
Overall sentiment across review platforms: positive
- WebMD / Vitals: 4.5/5 (~20)
- US News Doctors: 5/5 (78)
Patients praise
- Down-to-earth and approachable demeanor
- Informative explanations of procedures and treatments
- Efficient care processes from check-in to check-out
- Supportive and skilled staff
- Effective care for complex conditions like Crohn's disease
Common complaints
- Some patients feel rushed during appointments
- Perception of limited time for questions
- Occasional reports of the provider being dismissive or impatient
"He's the best. So down to earth and helpful and informative."
— WebMD / Vitals"I felt rushed through the whole appointment. He did most of the talking and talked very fast. Little time was left for me to ask questions. He does not listen well."
— WebMD / Vitals"Dr. Umphress said that I had IBS-D & deal with it. He was dismissive of me, impatient, actually acted as though he couldn't possibly care any less about me."
— YelpSynthesized from public review platforms as of Jul 10, 2026 — sources: [1][2][3][4].
In the News
- Dr. Jason L. Umphress, MD - Gastroenterologist in Woodland, CA — May 14, 2026
- JASON UMPHRESS, MD - Updated July 2026 - Gastroenterologist — Jul 4, 2026
- Find a Doctor or Provider Near You - CommonSpirit Health — May 24, 2026
- [PDF] Medicare PPO Directory - Blue Shield of California — Nov 26, 2025
- [PDF] Provider Listings - Printable - PSC Partners — Apr 30, 2026
Information sourced from the clinic's website as of July 10, 2026.
More gastroenterology clinics in Woodland
Gastroenterology: Adventist Health Physicians Network Woodland - Adventist Health is a nonprofit healthcare system with a broad United States footprint (32 offices) and international reach. - The Adventist Health Physicians Network (AHPN) includes specialty clinics such as gastroenterology across its facilities, including Woodland, CA in its Woodland area network. - Notable leadership and clinical roles referenced: directors and CMOs across varied departments, with a focus on infection prevention, clinical IT applications, emergency medicine, pharmacy, and physician network leadership. - For Woodland-area gastroenterology care, you would access Adventist Health facilities within the AHPN footprint in California, including surrounding Woodland-adjacent locations, with typical gastroenterology services such as colonoscopy, diagnostic GI evaluations, and therapeutic endoscopy offered through affiliated physicians and network medical groups.
Gastroenterology (GI) at Woodland Hills Medical Center in Woodland Hills, CA offers gastroenterology and endoscopy services by referral only. The clinic is located at 5601 De Soto Ave, Medical Office Tower, Entrance A, 4th Floor, and operates Monday through Friday from 8:30 a.m. to 5 p.m.
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