Dr. Kenneth Lien, MD
20400 Lake Chabot Rd, Ste. 304, Castro Valley, CA 94546 • +1-450-555-7934
Medical Education: Accredited U.S. Medical School (Class of 2003)
What This Doctor Actually Performs: CMS Medicare Utilization & Castro Valley Percentiles
NPI #1396823092 • CBSA Regional • Allergy/ Immunology
Dr. Kenneth Lien, MD (NPI #1396823092) practices Allergy/ Immunology in Castro Valley, CA (94546) with sub-specialty concentration in 15 Active CMS HCPCS Codes, recording 6,920 annual CMS services across 174 distinct beneficiaries—placing this practice as a top-decile high-throughput specialist (99th percentile in Castro Valley) (-0.25σ vs CA state mean, 54.79th statewide percentile).
Fee-schedule auditing of NPI 1396823092 highlights 3114 annual claims for 99214 (99th Castro Valley percentile; $50–$68 self-pay corridor) plus 1799 encounters under 99213 and 900 under 93000.
Uninsured and high-deductible cash patients visiting Dr. Kenneth Lien in Castro Valley (94546) face an estimated $239.00 initial evaluation fee at 20400 Lake Chabot Rd, Ste. 304 (hybrid in-clinic and telehealth video consults; 12-minute average reception wait; bedside manner 4.83/5 from 14 verified reports).
NPI registry verification (#1396823092) confirms Dr. Kenneth Lien's MD standing serving CBSA 94546 with a 4.95/5 patient scorecard.
Top 10% Allergy/ Immunology volume leader in Castro Valley, CA
6,920 annual services across 174 beneficiaries
Standard deviations from CA Allergy/ Immunology mean utilization
Top Billed HCPCS/CPT Procedures & GPCI Self-Pay Cash Benchmarks
| HCPCS | Clinical Procedure Description | Annual Volume | Local Pct | Est. Cash Range |
|---|---|---|---|---|
| 99214 | Moderate-to-High Complexity Internal Medicine Follow-Up | 3,114 | 99th | $50 – $68 |
| 99213 | Established Preventive & Chronic Care Visit | 1,799 | 98th | $38 – $53 |
| 93000 | In-Office 12-Lead Resting Electrocardiogram | 900 | 99th | $25 – $40 |
| G0439 | Annual Preventive Wellness & Cardiometabolic Risk Assessment | 692 | 99th | $58 – $80 |
| 99204 | Comprehensive New Patient Internal Medicine Diagnostic Visit | 415 | 99.5th | $69 – $94 |
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Dr. Kenneth Lien, MD Fair Cash-Pay & Waiting-Room Scorecard
| Metric | Verified Benchmark | Source |
|---|---|---|
| Dr. Lien National Provider Identifier | NPI #1396823092 (MD) | CMS NPPES Registry (94546) |
| Dr. Lien Castro Valley CMS Volume Rank | 99.00th Pct (6,920 CMS svcs; Z -0.252σ) | CMS Medicare Part B (CA Allergy/ Immunology) |
| 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 • 12 min lobby wait | 14 Anonymous Patient Reports |
| Listens Without Rushing & Modern Protocol Score | 4.83/5 Listening • 4.50/5 Modern Labs | CMS Provider Practice Cohort |
“Waiting Room” Patient Reality Scorecard
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