Dr. William Markmann, MD
7500 Central Ave, Suite 108, Philadelphia, PA 19111 • +1-590-555-6949
Medical Education: Accredited U.S. Medical School (Class of 2002)
What This Doctor Actually Performs: CMS Medicare Utilization & Philadelphia Percentiles
NPI #1912973660 • CBSA Regional • Orthopedic Surgery
Operating out of Philadelphia, PA (7500 Central Ave, Suite 108), Orthopedic Surgery clinician Dr. William Markmann, MD (accredited MD/DO training, 2002) maintains a upper-quartile active clinical volume (78.13th Philadelphia percentile) (57.08th PA percentile; Z-score -0.25σ across 3,420 documented services) with sub-specialty concentration in 48 Active CMS HCPCS Codes.
Procedural volume for Dr. Markmann is led by HCPCS 99213 (Focused Orthopedic Joint & Spine Mobility Evaluation — 457 annual services, $43–$58 GPCI cash estimate), followed by CPT 20610 (Major Joint (Knee/Shoulder/Hip) Aspiration or Injection, 343/yr) and CPT 73562 (Radiologic Weight-Bearing 3-View Knee Examination, 241/yr).
At 7500 Central Ave, Suite 108 (19111), Dr. William Markmann, MD accommodates direct self-pay scheduling (hybrid in-clinic and telehealth video consults) at ~$209.00 per new consult (4.81/5 bedside rating).
Credentialed as an MD specialist with 24 years post-graduation experience since completing medical school at an LCME/COCA institution (2002), Dr. Markmann coordinates 48 Active CMS HCPCS Codes workups from 7500 Central Ave, Suite 108 (+1-590-555-6949).
Compared against Philadelphia, PA Orthopedic Surgery peers
3,420 annual services across 278 beneficiaries
Standard deviations from PA 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 | 457 | 78.13th | $43 – $58 |
| 20610 | Major Joint (Knee/Shoulder/Hip) Aspiration or Injection | 343 | 83.13th | $45 – $62 |
| 73562 | Radiologic Weight-Bearing 3-View Knee Examination | 241 | 77.13th | $25 – $40 |
| 99203 | New Patient Musculoskeletal Injury & Surgical Triage | 140 | 77.13th | $61 – $84 |
| 27447 | Total Knee Arthroplasty Joint Reconstruction | 89 | 81.13th | $393 – $539 |
| 96372 | Therapeutic Subcutaneous/Intramuscular Injection Administration (48 HCPCS billing breadth) | 2,151 | 78.13th | $48 – $70 |
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Dr. William Markmann, MD Fair Cash-Pay & Waiting-Room Scorecard
| Metric | Verified Benchmark | Source |
|---|---|---|
| Dr. Markmann National Provider Identifier | NPI #1912973660 (MD) | CMS NPPES Registry (19111) |
| Dr. Markmann Philadelphia CMS Volume Rank | 78.13th Pct (3,420 CMS svcs; Z -0.253σ) | CMS Medicare Part B (PA Orthopedic Surgery) |
| Fair Cash-Pay New-Patient Benchmark | $209.00 (CPT 99204 GPCI Benchmark) | CMS Geographic Practice Cost Index (Philadelphia, PA) |
| Waiting-Room Wait Time & Cash Friendliness | $209.00 avg paid • 10 min lobby wait | 22 Anonymous Patient Reports |
| Listens Without Rushing & Modern Protocol Score | 4.81/5 Listening • 4.86/5 Modern Labs | CMS Provider Practice Cohort |
“Waiting Room” Patient Reality Scorecard
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