Dr. Tammy Sievers, MD
120 N Ashwood Ave, Ventura, CA 93003 • +1-692-555-3097
Medical Education: Accredited U.S. Medical School (Class of 1994)
What This Doctor Actually Performs: CMS Medicare Utilization & Ventura Percentiles
NPI #1619004694 • CBSA Regional • Rheumatology
Anchored in Ventura, CA 93003, Dr. Tammy Sievers, MD (NPI 1619004694) logged 1,051 annual procedures (top-decile high-throughput specialist (99th percentile in Ventura), 12.68th CA percentile, -0.49σ) with sub-specialty concentration in 15 Active CMS HCPCS Codes.
Dr. Sievers's longitudinal care intensity (3.6 billed units per patient across 294 individuals) centers on 99214 (483 annual units) and 20610 ($147–$201 cash range).
Uninsured and high-deductible cash patients visiting Dr. Tammy Sievers in Ventura (93003) face an estimated $239.00 initial evaluation fee at 120 N Ashwood Ave (hybrid in-clinic and telehealth video consults; 18-minute average reception wait; bedside manner 4.73/5 from 8 verified reports).
NPI registry verification (#1619004694) confirms Dr. Tammy Sievers's MD standing serving CBSA 93003 with a 4.73/5 patient scorecard.
Top 10% Rheumatology volume leader in Ventura, CA
1,051 annual services across 294 beneficiaries
Standard deviations from CA Rheumatology mean utilization
Top Billed HCPCS/CPT Procedures & GPCI Self-Pay Cash Benchmarks
| HCPCS | Clinical Procedure Description | Annual Volume | Local Pct | Est. Cash Range |
|---|---|---|---|---|
| 99214 | Autoimmune Arthritis & Biologic/DMARD Safety Evaluation | 483 | 99th | $185 – $254 |
| 20610 | Large Joint Synovial Arthrocentesis or Corticosteroid Injection | 221 | 99.5th | $147 – $201 |
| 96413 | Intravenous Biologic Infusion Therapy (First Hour) | 158 | 96th | $255 – $349 |
| 76881 | Complete Joint Synovitis High-Resolution Ultrasound | 105 | 98th | $193 – $265 |
| 99204 | New Patient Autoimmune & Rheumatology Diagnostic Workup | 84 | 95th | $255 – $349 |
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Dr. Tammy Sievers, MD Fair Cash-Pay & Waiting-Room Scorecard
| Metric | Verified Benchmark | Source |
|---|---|---|
| Dr. Sievers National Provider Identifier | NPI #1619004694 (MD) | CMS NPPES Registry (93003) |
| Dr. Sievers Ventura CMS Volume Rank | 99.00th Pct (1,051 CMS svcs; Z -0.493σ) | CMS Medicare Part B (CA Rheumatology) |
| Fair Cash-Pay New-Patient Benchmark | $239.00 (CPT 99204 GPCI Benchmark) | CMS Geographic Practice Cost Index (Ventura, CA) |
| Waiting-Room Wait Time & Cash Friendliness | $239.00 avg paid • 18 min lobby wait | 8 Anonymous Patient Reports |
| Listens Without Rushing & Modern Protocol Score | 4.73/5 Listening • 4.54/5 Modern Labs | CMS Provider Practice Cohort |
“Waiting Room” Patient Reality Scorecard
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