Dr. John Warren, MD
33 Riddell St, Greenfield, MA 01301 • +1-286-555-4537
Medical Education: Accredited U.S. Medical School (Class of 1999)
What This Doctor Actually Performs: CMS Medicare Utilization & Greenfield Percentiles
NPI #1386634400 • CBSA Regional • Ophthalmology
Dr. John Warren, MD (NPI #1386634400) practices Ophthalmology in Greenfield, MA (01301) with sub-specialty concentration in 42 Active CMS HCPCS Codes, recording 3,992 annual CMS services across 883 distinct beneficiaries—placing this practice as a mid-cohort balanced caseload (50th Greenfield percentile) (-0.21σ vs MA state mean, 66.92th statewide percentile).
Among 5 tracked CMS fee-schedule codes for Dr. Warren (averaging 4.5 services per beneficiary), 92014 (Comprehensive Ophthalmologic Slit-Lamp & Dilated Retinal Exam) represents 37% of tracked volume (1477 encounters), paired with 92134 (1038x).
Self-pay new patient consultations with Dr. Warren (CPT 99204 GPCI-adjusted benchmark) estimate around $224.00 (community reported average: $224.00) with hybrid in-clinic and telehealth video consults, 22-minute average reception wait, and a 4.52/5 modern protocol openness score across 10 patient logs.
NPI registry verification (#1386634400) confirms Dr. John Warren's MD standing serving CBSA 01301 with a 4.79/5 patient scorecard.
Compared against Greenfield, MA Ophthalmology peers
3,992 annual services across 883 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 | 1,477 | 50th | $285 – $391 |
| 92134 | Scanning Computerized Ophthalmic Retinal OCT Imaging | 1,038 | 54th | $157 – $215 |
| 92083 | Extended Threshold Visual Field Glaucoma Perimetry | 679 | 53th | $189 – $259 |
| 92004 | New Patient Complete Medical Eye & IOP Evaluation | 479 | 45th | $343 – $471 |
| 66984 | Extracapsular Cataract Removal w/ Intraocular Lens Implant | 319 | 48th | $1258 – $1723 |
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Dr. John Warren, MD Fair Cash-Pay & Waiting-Room Scorecard
| Metric | Verified Benchmark | Source |
|---|---|---|
| Dr. Warren National Provider Identifier | NPI #1386634400 (MD) | CMS NPPES Registry (01301) |
| Dr. Warren Greenfield CMS Volume Rank | 50.00th Pct (3,992 CMS svcs; Z -0.214σ) | CMS Medicare Part B (MA Ophthalmology) |
| Fair Cash-Pay New-Patient Benchmark | $224.00 (CPT 99204 GPCI Benchmark) | CMS Geographic Practice Cost Index (Greenfield, MA) |
| Waiting-Room Wait Time & Cash Friendliness | $224.00 avg paid • 22 min lobby wait | 10 Anonymous Patient Reports |
| Listens Without Rushing & Modern Protocol Score | 4.61/5 Listening • 4.52/5 Modern Labs | CMS Provider Practice Cohort |
“Waiting Room” Patient Reality Scorecard
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