Dr. Wei-Fang Ko, MD
19845 Lake Chabot Rd, Suite, 104, Castro Valley, CA 94546 • +1-450-555-7875
Medical Education: Accredited U.S. Medical School (Class of 2005)
What This Doctor Actually Performs: CMS Medicare Utilization & Castro Valley Percentiles
NPI #1417068081 • CBSA Regional • Gastroenterology
Operating out of Castro Valley, CA (19845 Lake Chabot Rd, Suite, 104), Gastroenterology clinician Dr. Wei-Fang Ko, MD (accredited MD/DO training, 2005) maintains a mid-cohort balanced caseload (50th Castro Valley percentile) (29.13th CA percentile; Z-score -0.30σ across 908 documented services) with sub-specialty concentration in 24 Active CMS HCPCS Codes.
Fee-schedule auditing of NPI 1417068081 highlights 336 annual claims for 99214 (50th Castro Valley percentile; $226–$309 self-pay corridor) plus 227 encounters under 45380 and 191 under 43239.
Self-pay new patient consultations with Dr. Ko (CPT 99204 GPCI-adjusted benchmark) estimate around $239.00 (community reported average: $239.00) with hybrid in-clinic and telehealth video consults, 15-minute average reception wait, and a 4.70/5 modern protocol openness score across 19 patient logs.
NPI registry verification (#1417068081) confirms Dr. Wei-Fang Ko's MD standing serving CBSA 94546 with a 4.84/5 patient scorecard.
Compared against Castro Valley, CA Gastroenterology peers
908 annual services across 448 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 | 336 | 50th | $226 – $309 |
| 45380 | Diagnostic Colonoscopy w/ Mucosal Tissue Biopsy | 227 | 50th | $544 – $745 |
| 43239 | Upper GI Esophagogastroduodenoscopy (EGD) w/ Biopsy | 191 | 47th | $451 – $619 |
| 45385 | Colonoscopy w/ Snare Polypectomy Lesion Removal | 91 | 55th | $605 – $829 |
| 99204 | New Patient Digestive & Hepatology Consultation | 64 | 51th | $318 – $436 |
Are you Dr. Wei-Fang Ko? Embed your Official DotMD Verification Badge (0-JS SVG)
Paste this lightweight SVG snippet onto your clinic bio page in Castro Valley, CA:
<a href="https://dotmd.com/doctors/wei-fang-ko-md-castro-valley-ca-1417068081" title="Dr. Wei-Fang Ko, MD - Verified CMS Utilization on DotMD"><img src="https://dotmd.com/badges/npi/1417068081.svg" alt="Dr. Wei-Fang Ko Gastroenterology Badge" width="280" height="72" /></a>
Dr. Wei-Fang Ko, MD Fair Cash-Pay & Waiting-Room Scorecard
| Metric | Verified Benchmark | Source |
|---|---|---|
| Dr. Ko National Provider Identifier | NPI #1417068081 (MD) | CMS NPPES Registry (94546) |
| Dr. Ko Castro Valley CMS Volume Rank | 50.00th Pct (908 CMS svcs; Z -0.296σ) | CMS Medicare Part B (CA Gastroenterology) |
| 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 • 15 min lobby wait | 19 Anonymous Patient Reports |
| Listens Without Rushing & Modern Protocol Score | 4.75/5 Listening • 4.70/5 Modern Labs | CMS Provider Practice Cohort |
“Waiting Room” Patient Reality Scorecard
Ask our AI Specialists anything about Dr. Wei-Fang Ko
Other High-Volume Gastroenterology Specialists in Castro Valley, CA
Ranked strictly by CMS Medicare volumeDr. Ko Waiting-Room Q&A & Patient Experience Logs
Anonymous patient-submitted wait times, cash visit fees, and bedside manner discussions in Castro Valley, CA.
Share your self-pay visit cost and lobby wait time—no account, email, or IP stored.
Filter Dr. Wei-Fang Ko community threads and patient logs by age, biological sex, dosage, and treatment duration.