Dr. Elizabeth Derham, MD
840 Walnut St Ste 1230, Philadelphia, PA 19107 • +1-347-555-6051
Medical Education: Accredited U.S. Medical School (Class of 1992)
What This Doctor Actually Performs: CMS Medicare Utilization & Philadelphia Percentiles
NPI #1144481060 • CBSA Regional • Ophthalmology
Dr. Elizabeth Derham, MD (NPI #1144481060) practices Ophthalmology in Philadelphia, PA (19107) with sub-specialty concentration in 28 Active CMS HCPCS Codes, recording 1,095 annual CMS services across 608 distinct beneficiaries—placing this practice as a focused low-volume boutique caseload (20.69th Philadelphia percentile) (-0.47σ vs PA state mean, 14.56th statewide percentile).
Fee-schedule auditing of NPI 1144481060 highlights 405 annual claims for 92014 (20.69th Philadelphia percentile; $183–$250 self-pay corridor) plus 285 encounters under 92134 and 186 under 92083.
Cash-pay intake data for NPI 1144481060 (840 Walnut St Ste 1230, Philadelphia) indicates $209.00 typical out-of-pocket visit spend against a $209.00 locality benchmark, paired with 11-minute average reception wait and 4.52/5 biomarker openness.
Credentialed as an MD specialist with 34 years post-graduation experience since completing medical school at an LCME/COCA institution (1992), Dr. Derham coordinates 28 Active CMS HCPCS Codes workups from 840 Walnut St Ste 1230 (+1-347-555-6051).
Compared against Philadelphia, PA Ophthalmology peers
1,095 annual services across 608 beneficiaries
Standard deviations from PA 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 | 405 | 20.69th | $183 – $250 |
| 92134 | Scanning Computerized Ophthalmic Retinal OCT Imaging | 285 | 22.69th | $101 – $138 |
| 92083 | Extended Threshold Visual Field Glaucoma Perimetry | 186 | 18.69th | $121 – $165 |
| 92004 | New Patient Complete Medical Eye & IOP Evaluation | 131 | 16.69th | $220 – $301 |
| 66984 | Extracapsular Cataract Removal w/ Intraocular Lens Implant | 88 | 23.69th | $805 – $1103 |
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Dr. Elizabeth Derham, MD Fair Cash-Pay & Waiting-Room Scorecard
| Metric | Verified Benchmark | Source |
|---|---|---|
| Dr. Derham National Provider Identifier | NPI #1144481060 (MD) | CMS NPPES Registry (19107) |
| Dr. Derham Philadelphia CMS Volume Rank | 20.69th Pct (1,095 CMS svcs; Z -0.473σ) | CMS Medicare Part B (PA Ophthalmology) |
| Fair Cash-Pay New-Patient Benchmark | $209.00 (CPT 99204 GPCI Benchmark) | CMS Geographic Practice Cost Index (Philadelphia, PA) |
| Waiting-Room Wait Time & Cash Friendliness | $209.00 avg paid • 11 min lobby wait | 21 Anonymous Patient Reports |
| Listens Without Rushing & Modern Protocol Score | 4.90/5 Listening • 4.52/5 Modern Labs | CMS Provider Practice Cohort |
“Waiting Room” Patient Reality Scorecard
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