Dr. Larry Johnston, DO
1215 Duff Ave, Ames, IA 50010 • +1-494-555-5288
Medical Education: Accredited U.S. Medical School (Class of 1999)
What This Doctor Actually Performs: CMS Medicare Utilization & Ames Percentiles
NPI #1386036333 • CBSA Regional • Gastroenterology
CMS Medicare Part B utilization records credit Dr. Larry Johnston (DO, NPI 1386036333) at 1215 Duff Ave in Ames with 1,247 annual clinical services (418 beneficiaries), corresponding to a -0.51σ regional deviation and focused low-volume boutique caseload (25th Ames percentile) with sub-specialty concentration in 65 Active CMS HCPCS Codes.
Among 5 tracked CMS fee-schedule codes for Dr. Johnston (averaging 3.0 services per beneficiary), 99214 (Established Gastroenterology, GERD & IBD Evaluation) represents 37% of tracked volume (461 encounters), paired with 45380 (312x).
For out-of-network patients contacting +1-494-555-5288, Dr. Johnston's practice posts a $209.00 GPCI self-pay consult estimate ($209.00 patient-logged median, 4.56/5 composite reality score over 7 submissions).
Patients evaluating Dr. Larry Johnston in ZIP 50010 note 27 years of post-doctoral tenure (null, 1999) alongside 3.0 annual CMS procedures per patient.
Compared against Ames, IA Gastroenterology peers
1,247 annual services across 418 beneficiaries
Standard deviations from IA 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 | 461 | 25th | $129 – $176 |
| 45380 | Diagnostic Colonoscopy w/ Mucosal Tissue Biopsy | 312 | 29th | $310 – $425 |
| 43239 | Upper GI Esophagogastroduodenoscopy (EGD) w/ Biopsy | 262 | 22th | $257 – $353 |
| 45385 | Colonoscopy w/ Snare Polypectomy Lesion Removal | 125 | 22th | $345 – $473 |
| 99204 | New Patient Digestive & Hepatology Consultation | 87 | 30th | $181 – $249 |
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Dr. Larry Johnston, DO Fair Cash-Pay & Waiting-Room Scorecard
| Metric | Verified Benchmark | Source |
|---|---|---|
| Dr. Johnston National Provider Identifier | NPI #1386036333 (DO) | CMS NPPES Registry (50010) |
| Dr. Johnston Ames CMS Volume Rank | 25.00th Pct (1,247 CMS svcs; Z -0.505σ) | CMS Medicare Part B (IA Gastroenterology) |
| Fair Cash-Pay New-Patient Benchmark | $209.00 (CPT 99204 GPCI Benchmark) | CMS Geographic Practice Cost Index (Ames, IA) |
| Waiting-Room Wait Time & Cash Friendliness | $209.00 avg paid • 19 min lobby wait | 7 Anonymous Patient Reports |
| Listens Without Rushing & Modern Protocol Score | 4.82/5 Listening • 4.85/5 Modern Labs | CMS Provider Practice Cohort |
“Waiting Room” Patient Reality Scorecard
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