Dr. Mark Greiner, MD
200 Hawkins DR, Iowa City, IA 52242 • +1-389-555-8339
Medical Education: Accredited U.S. Medical School (Class of 2007)
What This Doctor Actually Performs: CMS Medicare Utilization & Iowa City Percentiles
NPI #1194992958 • CBSA Regional • Ophthalmology
CMS Medicare Part B utilization records credit Dr. Mark Greiner (MD, NPI 1194992958) at 200 Hawkins DR in Iowa City with 2,175 annual clinical services (604 beneficiaries), corresponding to a -0.39σ regional deviation and upper-quartile active clinical volume (70th Iowa City percentile) with sub-specialty concentration in 52 Active CMS HCPCS Codes.
Dr. Greiner's longitudinal care intensity (3.6 billed units per patient across 604 individuals) centers on 92014 (805 annual units) and 92134 ($88–$121 cash range).
For out-of-network patients contacting +1-389-555-8339, Dr. Greiner's practice posts a $209.00 GPCI self-pay consult estimate ($209.00 patient-logged median, 4.56/5 composite reality score over 15 submissions).
Patients evaluating Dr. Mark Greiner in ZIP 52242 note 19 years of post-doctoral tenure (null, 2007) alongside 3.6 annual CMS procedures per patient.
Compared against Iowa City, IA Ophthalmology peers
2,175 annual services across 604 beneficiaries
Standard deviations from IA 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 | 805 | 70th | $161 – $220 |
| 92134 | Scanning Computerized Ophthalmic Retinal OCT Imaging | 566 | 73th | $88 – $121 |
| 92083 | Extended Threshold Visual Field Glaucoma Perimetry | 370 | 66th | $106 – $145 |
| 92004 | New Patient Complete Medical Eye & IOP Evaluation | 261 | 74th | $193 – $265 |
| 66984 | Extracapsular Cataract Removal w/ Intraocular Lens Implant | 174 | 65th | $707 – $969 |
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Dr. Mark Greiner, MD Fair Cash-Pay & Waiting-Room Scorecard
| Metric | Verified Benchmark | Source |
|---|---|---|
| Dr. Greiner National Provider Identifier | NPI #1194992958 (MD) | CMS NPPES Registry (52242) |
| Dr. Greiner Iowa City CMS Volume Rank | 70.00th Pct (2,175 CMS svcs; Z -0.390σ) | CMS Medicare Part B (IA Ophthalmology) |
| Fair Cash-Pay New-Patient Benchmark | $209.00 (CPT 99204 GPCI Benchmark) | CMS Geographic Practice Cost Index (Iowa City, IA) |
| Waiting-Room Wait Time & Cash Friendliness | $209.00 avg paid • 21 min lobby wait | 15 Anonymous Patient Reports |
| Listens Without Rushing & Modern Protocol Score | 4.56/5 Listening • 4.55/5 Modern Labs | CMS Provider Practice Cohort |
“Waiting Room” Patient Reality Scorecard
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