Dr. Stanley Tan, MD
20642 John DR, Castro Valley, CA 94546 • +1-450-555-5758
Medical Education: Accredited U.S. Medical School (Class of 1996)
What This Doctor Actually Performs: CMS Medicare Utilization & Castro Valley Percentiles
NPI #1396747721 • CBSA Regional • Endocrinology
Dr. Stanley Tan, MD (NPI #1396747721) practices Endocrinology in Castro Valley, CA (94546) with sub-specialty concentration in 17 Active CMS HCPCS Codes, recording 742 annual CMS services across 122 distinct beneficiaries—placing this practice as a focused low-volume boutique caseload (0th Castro Valley percentile) (-0.59σ vs CA state mean, 3.99th statewide percentile).
Granular CPT/HCPCS billing distribution at 20642 John DR shows Dr. Stanley Tan's primary concentration in Complex Endocrine, Thyroid & Metabolic Biomarker Management (code 99214: 85x/yr, 12th local percentile) alongside Ambulatory Continuous Glucose Monitoring (CGM) Data Analysis (95251: 43x/yr, $54–$73).
Direct cash-pay transparency modeling sets Dr. Tan's baseline new-consult rate near $239.00 in Castro Valley, CA (cash-pay accepted, hybrid in-clinic and telehealth video consults, 20-minute average reception wait).
Credentialed as an MD specialist with 30 years post-graduation experience since completing medical school at an LCME/COCA institution (1996), Dr. Tan coordinates 17 Active CMS HCPCS Codes workups from 20642 John DR (+1-450-555-5758).
Compared against Castro Valley, CA Endocrinology peers
742 annual services across 122 beneficiaries
Standard deviations from CA Endocrinology mean utilization
Top Billed HCPCS/CPT Procedures & GPCI Self-Pay Cash Benchmarks
| HCPCS | Clinical Procedure Description | Annual Volume | Local Pct | Est. Cash Range |
|---|---|---|---|---|
| 99214 | Complex Endocrine, Thyroid & Metabolic Biomarker Management | 85 | 12th | $86 – $117 |
| 95251 | Ambulatory Continuous Glucose Monitoring (CGM) Data Analysis | 43 | 12th | $54 – $73 |
| 76536 | High-Resolution Thyroid & Parathyroid Neck Ultrasound | 31 | 12th | $103 – $142 |
| 99204 | Comprehensive New Patient Endocrine & Hormone Workup | 23 | 12th | $118 – $161 |
| 99215 | High-Complexity Multi-Hormone & Insulin Pump Titration | 12 | 12th | $132 – $181 |
| 96372 | Therapeutic Subcutaneous/Intramuscular Injection Administration (17 HCPCS billing breadth) | 548 | 0th | $74 – $107 |
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Dr. Stanley Tan, MD Fair Cash-Pay & Waiting-Room Scorecard
| Metric | Verified Benchmark | Source |
|---|---|---|
| Dr. Tan National Provider Identifier | NPI #1396747721 (MD) | CMS NPPES Registry (94546) |
| Dr. Tan Castro Valley CMS Volume Rank | 0.00th Pct (742 CMS svcs; Z -0.595σ) | CMS Medicare Part B (CA Endocrinology) |
| Fair Cash-Pay New-Patient Benchmark | $239.00 (CPT 99204 GPCI Benchmark) | CMS Geographic Practice Cost Index (Castro Valley, CA) |
| Waiting-Room Wait Time & Cash Friendliness | $239.00 avg paid • 20 min lobby wait | 22 Anonymous Patient Reports |
| Listens Without Rushing & Modern Protocol Score | 4.63/5 Listening • 4.41/5 Modern Labs | CMS Provider Practice Cohort |
“Waiting Room” Patient Reality Scorecard
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