Dr. Allison Zhang, MD
2585 Samaritan DR Ste 25 2nd Fl, San Jose, CA 95124 • +1-932-555-4788
Medical Education: Accredited U.S. Medical School (Class of 1999)
What This Doctor Actually Performs: CMS Medicare Utilization & San Jose Percentiles
NPI #1821435900 • CBSA Regional • Gastroenterology
Operating out of San Jose, CA (2585 Samaritan DR Ste 25 2nd Fl), Gastroenterology clinician Dr. Allison Zhang, MD (accredited MD/DO training, 1999) maintains a mid-cohort balanced caseload (64.71th San Jose percentile) (35.04th CA percentile; Z-score -0.27σ across 993 documented services) with sub-specialty concentration in 23 Active CMS HCPCS Codes.
Fee-schedule auditing of NPI 1821435900 highlights 367 annual claims for 99214 (64.71th San Jose percentile; $237–$325 self-pay corridor) plus 248 encounters under 45380 and 209 under 43239.
Uninsured and high-deductible cash patients visiting Dr. Allison Zhang in San Jose (95124) face an estimated $239.00 initial evaluation fee at 2585 Samaritan DR Ste 25 2nd Fl (hybrid in-clinic and telehealth video consults; 12-minute average reception wait; bedside manner 4.58/5 from 10 verified reports).
Clinical background for Dr. Zhang (MD, NPI #1821435900) includes accredited doctoral training (1999, 27 yrs in practice) and virtual + in-office availability across CA.
Compared against San Jose, CA Gastroenterology peers
993 annual services across 390 beneficiaries
Standard deviations from CA Gastroenterology mean utilization
Top Billed HCPCS/CPT Procedures & GPCI Self-Pay Cash Benchmarks
| HCPCS | Clinical Procedure Description | Annual Volume | Local Pct | Est. Cash Range |
|---|---|---|---|---|
| 99214 | Established Gastroenterology, GERD & IBD Evaluation | 367 | 64.71th | $237 – $325 |
| 45380 | Diagnostic Colonoscopy w/ Mucosal Tissue Biopsy | 248 | 69.71th | $571 – $782 |
| 43239 | Upper GI Esophagogastroduodenoscopy (EGD) w/ Biopsy | 209 | 61.71th | $474 – $649 |
| 45385 | Colonoscopy w/ Snare Polypectomy Lesion Removal | 99 | 63.71th | $635 – $871 |
| 99204 | New Patient Digestive & Hepatology Consultation | 70 | 64.71th | $334 – $457 |
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Dr. Allison Zhang, MD Fair Cash-Pay & Waiting-Room Scorecard
| Metric | Verified Benchmark | Source |
|---|---|---|
| Dr. Zhang National Provider Identifier | NPI #1821435900 (MD) | CMS NPPES Registry (95124) |
| Dr. Zhang San Jose CMS Volume Rank | 64.71th Pct (993 CMS svcs; Z -0.274σ) | CMS Medicare Part B (CA Gastroenterology) |
| Fair Cash-Pay New-Patient Benchmark | $239.00 (CPT 99204 GPCI Benchmark) | CMS Geographic Practice Cost Index (San Jose, CA) |
| Waiting-Room Wait Time & Cash Friendliness | $239.00 avg paid • 12 min lobby wait | 10 Anonymous Patient Reports |
| Listens Without Rushing & Modern Protocol Score | 4.58/5 Listening • 4.68/5 Modern Labs | CMS Provider Practice Cohort |
“Waiting Room” Patient Reality Scorecard
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