Dr. Michael Grenis, MD
325 Princeton Ave, Princeton, NJ 08540 • +1-866-555-5615
Medical Education: Accredited U.S. Medical School (Class of 1995)
What This Doctor Actually Performs: CMS Medicare Utilization & Princeton Percentiles
NPI #1669546834 • CBSA Regional • Orthopedic Surgery
Dr. Michael Grenis, MD (NPI #1669546834) practices Orthopedic Surgery in Princeton, NJ (08540) with sub-specialty concentration in 60 Active CMS HCPCS Codes, recording 11,246 annual CMS services across 727 distinct beneficiaries—placing this practice as a upper-quartile active clinical volume (65.22th Princeton percentile) (+0.51σ vs NJ state mean, 83.92th statewide percentile).
Medicare Part B line-item claims for Dr. Michael Grenis (08540) place 99213 at the top of the practice ledger (850 yearly units, 65.22th metro rank), rounded out by 20610 and 73562.
Direct cash-pay transparency modeling sets Dr. Grenis's baseline new-consult rate near $209.00 in Princeton, NJ (cash-pay accepted, in-person clinic visits only, 17-minute average reception wait).
Clinical background for Dr. Grenis (MD, NPI #1669546834) includes accredited doctoral training (1995, 31 yrs in practice) and dedicated on-site consultations at 325 Princeton Ave.
Compared against Princeton, NJ Orthopedic Surgery peers
11,246 annual services across 727 beneficiaries
Standard deviations from NJ Orthopedic Surgery 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 Orthopedic Joint & Spine Mobility Evaluation | 850 | 65.22th | $35 – $50 |
| 20610 | Major Joint (Knee/Shoulder/Hip) Aspiration or Injection | 637 | 63.22th | $37 – $52 |
| 73562 | Radiologic Weight-Bearing 3-View Knee Examination | 449 | 69.22th | $25 – $40 |
| 99203 | New Patient Musculoskeletal Injury & Surgical Triage | 260 | 66.22th | $50 – $68 |
| 27447 | Total Knee Arthroplasty Joint Reconstruction | 165 | 61.22th | $321 – $440 |
| 96372 | Therapeutic Subcutaneous/Intramuscular Injection Administration (60 HCPCS billing breadth) | 8,885 | 65.22th | $45 – $65 |
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Dr. Michael Grenis, MD Fair Cash-Pay & Waiting-Room Scorecard
| Metric | Verified Benchmark | Source |
|---|---|---|
| Dr. Grenis National Provider Identifier | NPI #1669546834 (MD) | CMS NPPES Registry (08540) |
| Dr. Grenis Princeton CMS Volume Rank | 65.22th Pct (11,246 CMS svcs; Z +0.513σ) | CMS Medicare Part B (NJ Orthopedic Surgery) |
| Fair Cash-Pay New-Patient Benchmark | $209.00 (CPT 99204 GPCI Benchmark) | CMS Geographic Practice Cost Index (Princeton, NJ) |
| Waiting-Room Wait Time & Cash Friendliness | $209.00 avg paid • 17 min lobby wait | 3 Anonymous Patient Reports |
| Listens Without Rushing & Modern Protocol Score | 4.91/5 Listening • 4.68/5 Modern Labs | CMS Provider Practice Cohort |
“Waiting Room” Patient Reality Scorecard
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