Dr. David Chang, MD
762 Altos Oaks DR, Los Altos, CA 94024 • +1-566-555-3563
Medical Education: Accredited U.S. Medical School (Class of 2000)
What This Doctor Actually Performs: CMS Medicare Utilization & Los Altos Percentiles
NPI #1316966138 • CBSA Regional • Ophthalmology
CMS Medicare Part B utilization records credit Dr. David Chang (MD, NPI 1316966138) at 762 Altos Oaks DR in Los Altos with 3,362 annual clinical services (980 beneficiaries), corresponding to a -0.28σ regional deviation and focused low-volume boutique caseload (25th Los Altos percentile) with sub-specialty concentration in 29 Active CMS HCPCS Codes.
Fee-schedule auditing of NPI 1316966138 highlights 1244 annual claims for 92014 (25th Los Altos percentile; $519–$711 self-pay corridor) plus 874 encounters under 92134 and 572 under 92083.
Uninsured and high-deductible cash patients visiting Dr. David Chang in Los Altos (94024) face an estimated $239.00 initial evaluation fee at 762 Altos Oaks DR (hybrid in-clinic and telehealth video consults; 9-minute average reception wait; bedside manner 4.88/5 from 5 verified reports).
NPI registry verification (#1316966138) confirms Dr. David Chang's MD standing serving CBSA 94024 with a 4.62/5 patient scorecard.
Compared against Los Altos, CA Ophthalmology peers
3,362 annual services across 980 beneficiaries
Standard deviations from CA Ophthalmology mean utilization
Top Billed HCPCS/CPT Procedures & GPCI Self-Pay Cash Benchmarks
| HCPCS | Clinical Procedure Description | Annual Volume | Local Pct | Est. Cash Range |
|---|---|---|---|---|
| 92014 | Comprehensive Ophthalmologic Slit-Lamp & Dilated Retinal Exam | 1,244 | 25th | $519 – $711 |
| 92134 | Scanning Computerized Ophthalmic Retinal OCT Imaging | 874 | 22th | $286 – $392 |
| 92083 | Extended Threshold Visual Field Glaucoma Perimetry | 572 | 20th | $343 – $470 |
| 92004 | New Patient Complete Medical Eye & IOP Evaluation | 403 | 28th | $625 – $856 |
| 66984 | Extracapsular Cataract Removal w/ Intraocular Lens Implant | 269 | 22th | $2288 – $3135 |
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Dr. David Chang, MD Fair Cash-Pay & Waiting-Room Scorecard
| Metric | Verified Benchmark | Source |
|---|---|---|
| Dr. Chang National Provider Identifier | NPI #1316966138 (MD) | CMS NPPES Registry (94024) |
| Dr. Chang Los Altos CMS Volume Rank | 25.00th Pct (3,362 CMS svcs; Z -0.279σ) | CMS Medicare Part B (CA Ophthalmology) |
| Fair Cash-Pay New-Patient Benchmark | $239.00 (CPT 99204 GPCI Benchmark) | CMS Geographic Practice Cost Index (Los Altos, CA) |
| Waiting-Room Wait Time & Cash Friendliness | $239.00 avg paid • 9 min lobby wait | 5 Anonymous Patient Reports |
| Listens Without Rushing & Modern Protocol Score | 4.88/5 Listening • 4.40/5 Modern Labs | CMS Provider Practice Cohort |
“Waiting Room” Patient Reality Scorecard
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