Dr. Peter Knowlton, MD
1637 Savannah Hwy, Charleston, SC 29407 • +1-744-555-2347
Medical Education: Accredited U.S. Medical School (Class of 1993)
What This Doctor Actually Performs: CMS Medicare Utilization & Charleston Percentiles
NPI #1740523604 • CBSA Regional • Ophthalmology
Dr. Peter Knowlton, MD (NPI #1740523604) practices Ophthalmology in Charleston, SC (29407) with sub-specialty concentration in 47 Active CMS HCPCS Codes, recording 4,158 annual CMS services across 1,657 distinct beneficiaries—placing this practice as a upper-quartile active clinical volume (68.75th Charleston percentile) (-0.31σ vs SC state mean, 57.99th statewide percentile).
Dr. Knowlton's longitudinal care intensity (2.5 billed units per patient across 1657 individuals) centers on 92014 (1538 annual units) and 92134 ($102–$140 cash range).
Cash-pay intake data for NPI 1740523604 (1637 Savannah Hwy, Charleston) indicates $209.00 typical out-of-pocket visit spend against a $209.00 locality benchmark, paired with 13-minute average reception wait and 4.92/5 biomarker openness.
NPI registry verification (#1740523604) confirms Dr. Peter Knowlton's MD standing serving CBSA 29407 with a 4.52/5 patient scorecard.
Compared against Charleston, SC Ophthalmology peers
4,158 annual services across 1,657 beneficiaries
Standard deviations from SC 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 | 1,538 | 68.75th | $186 – $254 |
| 92134 | Scanning Computerized Ophthalmic Retinal OCT Imaging | 1,081 | 72.75th | $102 – $140 |
| 92083 | Extended Threshold Visual Field Glaucoma Perimetry | 707 | 71.75th | $123 – $168 |
| 92004 | New Patient Complete Medical Eye & IOP Evaluation | 499 | 73.75th | $223 – $306 |
| 66984 | Extracapsular Cataract Removal w/ Intraocular Lens Implant | 333 | 71.75th | $818 – $1120 |
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Dr. Peter Knowlton, MD Fair Cash-Pay & Waiting-Room Scorecard
| Metric | Verified Benchmark | Source |
|---|---|---|
| Dr. Knowlton National Provider Identifier | NPI #1740523604 (MD) | CMS NPPES Registry (29407) |
| Dr. Knowlton Charleston CMS Volume Rank | 68.75th Pct (4,158 CMS svcs; Z -0.310σ) | CMS Medicare Part B (SC Ophthalmology) |
| Fair Cash-Pay New-Patient Benchmark | $209.00 (CPT 99204 GPCI Benchmark) | CMS Geographic Practice Cost Index (Charleston, SC) |
| Waiting-Room Wait Time & Cash Friendliness | $209.00 avg paid • 13 min lobby wait | 19 Anonymous Patient Reports |
| Listens Without Rushing & Modern Protocol Score | 4.87/5 Listening • 4.92/5 Modern Labs | CMS Provider Practice Cohort |
“Waiting Room” Patient Reality Scorecard
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