Dr. Anthony Merrill, DO
20100 N 51st Ave Ste F620, Glendale, AZ 85308 • +1-369-555-7444
Medical Education: Accredited U.S. Medical School (Class of 1996)
What This Doctor Actually Performs: CMS Medicare Utilization & Glendale Percentiles
NPI #1730399304 • CBSA Regional • Gastroenterology
Statistical peer benchmarking across AZ Gastroenterology providers positions Dr. Anthony Merrill, DO in Glendale at -0.53σ (11.11th city percentile / 12.41th state percentile, 345 Medicare beneficiaries), with clinical focus spanning 31 Active CMS HCPCS Codes.
Granular CPT/HCPCS billing distribution at 20100 N 51st Ave Ste F620 shows Dr. Anthony Merrill's primary concentration in Established Gastroenterology, GERD & IBD Evaluation (code 99214: 268x/yr, 12th local percentile) alongside Diagnostic Colonoscopy w/ Mucosal Tissue Biopsy (45380: 181x/yr, $432–$592).
Self-pay new patient consultations with Dr. Merrill (CPT 99204 GPCI-adjusted benchmark) estimate around $207.00 (community reported average: $207.00) with hybrid in-clinic and telehealth video consults, 22-minute average reception wait, and a 4.57/5 modern protocol openness score across 22 patient logs.
NPI registry verification (#1730399304) confirms Dr. Anthony Merrill's DO standing serving CBSA 85308 with a 4.67/5 patient scorecard.
Compared against Glendale, AZ Gastroenterology peers
724 annual services across 345 beneficiaries
Standard deviations from AZ Gastroenterology mean utilization
Top Billed HCPCS/CPT Procedures & GPCI Self-Pay Cash Benchmarks
| HCPCS | Clinical Procedure Description | Annual Volume | Local Pct | Est. Cash Range |
|---|---|---|---|---|
| 99214 | Established Gastroenterology, GERD & IBD Evaluation | 268 | 12th | $179 – $246 |
| 45380 | Diagnostic Colonoscopy w/ Mucosal Tissue Biopsy | 181 | 12th | $432 – $592 |
| 43239 | Upper GI Esophagogastroduodenoscopy (EGD) w/ Biopsy | 152 | 12th | $358 – $491 |
| 45385 | Colonoscopy w/ Snare Polypectomy Lesion Removal | 72 | 16.11th | $481 – $659 |
| 99204 | New Patient Digestive & Hepatology Consultation | 51 | 13.11th | $253 – $346 |
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Dr. Anthony Merrill, DO Fair Cash-Pay & Waiting-Room Scorecard
| Metric | Verified Benchmark | Source |
|---|---|---|
| Dr. Merrill National Provider Identifier | NPI #1730399304 (DO) | CMS NPPES Registry (85308) |
| Dr. Merrill Glendale CMS Volume Rank | 11.11th Pct (724 CMS svcs; Z -0.530σ) | CMS Medicare Part B (AZ Gastroenterology) |
| Fair Cash-Pay New-Patient Benchmark | $207.00 (CPT 99204 GPCI Benchmark) | CMS Geographic Practice Cost Index (Glendale, AZ) |
| Waiting-Room Wait Time & Cash Friendliness | $207.00 avg paid • 22 min lobby wait | 22 Anonymous Patient Reports |
| Listens Without Rushing & Modern Protocol Score | 4.72/5 Listening • 4.57/5 Modern Labs | CMS Provider Practice Cohort |
“Waiting Room” Patient Reality Scorecard
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