Dr. Marshall Greiman, MD
1601 Nw 114th St, Suite 230, Clive, IA 50325 • +1-293-555-3579
Medical Education: Accredited U.S. Medical School (Class of 2014)
What This Doctor Actually Performs: CMS Medicare Utilization & Clive Percentiles
NPI #1376657957 • CBSA Regional • Otolaryngology
Anchored in Clive, IA 50325, Dr. Marshall Greiman, MD (NPI 1376657957) logged 830 annual procedures (focused low-volume boutique caseload (20th Clive percentile), 15.79th IA percentile, -0.46σ) with sub-specialty concentration in 34 Active CMS HCPCS Codes.
Dr. Greiman's longitudinal care intensity (2.2 billed units per patient across 380 individuals) centers on 99213 (282 annual units) and 31231 ($243–$334 cash range).
For out-of-network patients contacting +1-293-555-3579, Dr. Greiman's practice posts a $209.00 GPCI self-pay consult estimate ($209.00 patient-logged median, 4.73/5 composite reality score over 4 submissions).
NPI registry verification (#1376657957) confirms Dr. Marshall Greiman's MD standing serving CBSA 50325 with a 4.73/5 patient scorecard.
Compared against Clive, IA Otolaryngology peers
830 annual services across 380 beneficiaries
Standard deviations from IA Otolaryngology mean utilization
Top Billed HCPCS/CPT Procedures & GPCI Self-Pay Cash Benchmarks
| HCPCS | Clinical Procedure Description | Annual Volume | Local Pct | Est. Cash Range |
|---|---|---|---|---|
| 99213 | Focused Ear, Nose, Sinus & Throat Examination | 282 | 20th | $121 – $166 |
| 31231 | Diagnostic Rigid/Flexible Nasal & Sinus Endoscopy | 208 | 18th | $243 – $334 |
| 31575 | Flexible Fiberoptic Laryngoscopy Vocal Cord Inspection | 158 | 24th | $178 – $243 |
| 92557 | Comprehensive Pure-Tone Audiometry & Speech Recognition | 108 | 22th | $86 – $117 |
| 69210 | Instrumented Impacted Cerumen Removal Under Microscopy | 75 | 16th | $76 – $105 |
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Dr. Marshall Greiman, MD Fair Cash-Pay & Waiting-Room Scorecard
| Metric | Verified Benchmark | Source |
|---|---|---|
| Dr. Greiman National Provider Identifier | NPI #1376657957 (MD) | CMS NPPES Registry (50325) |
| Dr. Greiman Clive CMS Volume Rank | 20.00th Pct (830 CMS svcs; Z -0.455σ) | CMS Medicare Part B (IA Otolaryngology) |
| Fair Cash-Pay New-Patient Benchmark | $209.00 (CPT 99204 GPCI Benchmark) | CMS Geographic Practice Cost Index (Clive, IA) |
| Waiting-Room Wait Time & Cash Friendliness | $209.00 avg paid • 10 min lobby wait | 4 Anonymous Patient Reports |
| Listens Without Rushing & Modern Protocol Score | 4.55/5 Listening • 4.68/5 Modern Labs | CMS Provider Practice Cohort |
“Waiting Room” Patient Reality Scorecard
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