Tammy Pei-Hsin Cheng Sievers, MD
Rheumatology Internal Medicine
Tammy Sievers, MD practices as part of a group rheumatologist practice in Ventura, CA. Trained at Washington University School of Medicine (class of 2002), she has been practicing for over 24 years. Rheumatologists treat autoimmune and inflammatory conditions including rheumatoid arthritis, lupus, psoriatic arthritis, and more.
Data updated 2021-03-08 on CMS NPPES
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Background & Specialty
Education, training, and specialty classification from CMS NPPES and Medicare records.
Rheumatologists treat autoimmune and inflammatory conditions including rheumatoid arthritis, lupus, psoriatic arthritis, gout, osteoarthritis, and vasculitis. They manage biologic therapies and joint-preserving treatments.
Taxonomy: 207RR0500X
Education & Training
Washington University School of Medicine (Class of 2002)
Virtual Internal Medicine Care With Tammy Sievers
NPPES records indicate this provider offers telehealth services. Contact the office to confirm availability and scheduling.
Schedule a virtual visit with Tammy Sievers for follow-ups, medication reviews, and ongoing care — no travel to Ventura required. The office sends a secure video link before your appointment. Most visits take 15–30 minutes.
Frequently Asked Questions
Common questions about Tammy Sievers
NPI records show Dr. Sievers as active with telehealth listed in Ventura, CA. Note: NPI status alone doesn't confirm open availability — always call ahead. Phone: (805) 658-5800.
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Contact Tammy Sievers
Practice Location
120 N Ashwood Ave, Ventura, CA 93003-1810
Mailing Address
5855 Olivas Park Dr, Ventura, CA 93003-7672
This is a provider directory. Contact the office directly to schedule appointments.
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