Dr. Joann Chang, MD
479 Old Union Tpke, Lancaster, MA 01523 • +1-288-555-6235
Medical Education: Accredited U.S. Medical School (Class of 2002)
What This Doctor Actually Performs: CMS Medicare Utilization & Lancaster Percentiles
NPI #1730359100 • CBSA Regional • Ophthalmology
Anchored in Lancaster, MA 01523, Dr. Joann Chang, MD (NPI 1730359100) logged 3,190 annual procedures (mid-cohort balanced caseload (40th Lancaster percentile), 57.32th MA percentile, -0.28σ) with sub-specialty concentration in 48 Active CMS HCPCS Codes.
Fee-schedule auditing of NPI 1730359100 highlights 1180 annual claims for 92014 (40th Lancaster percentile; $235–$322 self-pay corridor) plus 829 encounters under 92134 and 542 under 92083.
Self-pay new patient consultations with Dr. Chang (CPT 99204 GPCI-adjusted benchmark) estimate around $224.00 (community reported average: $224.00) with hybrid in-clinic and telehealth video consults, 17-minute average reception wait, and a 4.58/5 modern protocol openness score across 7 patient logs.
Credentialed as an MD specialist with 24 years post-graduation experience since completing medical school at an LCME/COCA institution (2002), Dr. Chang coordinates 48 Active CMS HCPCS Codes workups from 479 Old Union Tpke (+1-288-555-6235).
Compared against Lancaster, MA Ophthalmology peers
3,190 annual services across 742 beneficiaries
Standard deviations from MA 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 | 1,180 | 40th | $235 – $322 |
| 92134 | Scanning Computerized Ophthalmic Retinal OCT Imaging | 829 | 37th | $130 – $178 |
| 92083 | Extended Threshold Visual Field Glaucoma Perimetry | 542 | 38th | $156 – $213 |
| 92004 | New Patient Complete Medical Eye & IOP Evaluation | 383 | 43th | $283 – $388 |
| 66984 | Extracapsular Cataract Removal w/ Intraocular Lens Implant | 255 | 45th | $1037 – $1421 |
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Dr. Joann Chang, MD Fair Cash-Pay & Waiting-Room Scorecard
| Metric | Verified Benchmark | Source |
|---|---|---|
| Dr. Chang National Provider Identifier | NPI #1730359100 (MD) | CMS NPPES Registry (01523) |
| Dr. Chang Lancaster CMS Volume Rank | 40.00th Pct (3,190 CMS svcs; Z -0.280σ) | CMS Medicare Part B (MA Ophthalmology) |
| Fair Cash-Pay New-Patient Benchmark | $224.00 (CPT 99204 GPCI Benchmark) | CMS Geographic Practice Cost Index (Lancaster, MA) |
| Waiting-Room Wait Time & Cash Friendliness | $224.00 avg paid • 17 min lobby wait | 7 Anonymous Patient Reports |
| Listens Without Rushing & Modern Protocol Score | 4.73/5 Listening • 4.58/5 Modern Labs | CMS Provider Practice Cohort |
“Waiting Room” Patient Reality Scorecard
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