Tammy Pei-Hsin Cheng Sievers, MD
Rheumatology Internal Medicine
Tammy Pei-Hsin Cheng Sievers is a Rheumatology Internal Medicine specialist based in Ventura, CA with over 24 years of clinical experience. Offers virtual telehealth visits.
Tammy Pei-Hsin Cheng 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. Among her Medicare patients, common conditions include hypertension, high cholesterol, and arthritis (per CMS data).
Older · 1903dNPPES updated 2021-03-08 · verify NPI on CMS · Verify license at Medical Board of California
What This Doctor Treats Most
Based on Medicare claims data — here's what patients commonly see this doctor for
Based on Medicare data, this doctor primarily manages Hypertension, High Cholesterol, and Arthritis.
High blood pressure — a leading risk factor for heart disease and stroke
Elevated cholesterol or triglycerides that increase heart disease risk
Joint inflammation causing pain, swelling, and stiffness
Weakened bones that are more prone to fractures, common in older adults
A condition where the body cannot properly regulate blood sugar levels
Gradual loss of kidney function over time, often linked to diabetes or hypertension
Conditions affecting emotional state, including depression and bipolar disorder
A mood disorder causing persistent sadness and loss of interest in activities
Percentage of this provider's Medicare patients diagnosed with each condition. Source: CMS Utilization Data.
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Background & Specialty
Education, training, and specialty classification from CMS NPPES and Medicare records.
Graduated medical school · 2002
Washington University School of Medicine
Board certified · Mar 7, 2021
Self-reported via NPPES
24 years in practice
Experienced
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)
Mailing address
5855 Olivas Park Dr, Ventura, CA 93003-7672
Differs from practice location
Virtual Internal Medicine Care With Tammy Pei-Hsin Cheng Sievers
NPPES records indicate this provider offers telehealth services. Contact the office to confirm availability and scheduling.
Schedule a virtual visit with Tammy Pei-Hsin Cheng Sievers for blood pressure monitoring, cholesterol management, arthritis follow-ups — 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 Pei-Hsin Cheng Sievers
NPI records show Dr. Sievers as active with telehealth listed in Ventura, CA. NPI status alone doesn't confirm open availability — call the office to confirm. Phone: (805) 658-5800.
Sourced from CMS NPPES · OIG LEIE · CMS Physician Comparator. See Data Methodology.
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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 Tammy Pei-Hsin Cheng 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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