Dr. Mark Chisam, MD
3901 Treyburn DR, Suite B, Williamsburg, VA 23185 • +1-772-555-3971
Medical Education: Accredited U.S. Medical School (Class of 1995)
What This Doctor Actually Performs: CMS Medicare Utilization & Williamsburg Percentiles
NPI #1053381251 • CBSA Regional • Radiation Oncology
Statistical peer benchmarking across VA Radiation Oncology providers positions Dr. Mark Chisam, MD in Williamsburg at -0.73σ (99th city percentile / 11.84th state percentile, 102 Medicare beneficiaries), with clinical focus spanning 21 Active CMS HCPCS Codes.
Among 5 tracked CMS fee-schedule codes for Dr. Chisam (averaging 13.7 services per beneficiary), 99214 (Moderate-to-High Complexity Internal Medicine Follow-Up) represents 45% of tracked volume (630 encounters), paired with 99213 (364x).
Direct cash-pay transparency modeling sets Dr. Chisam's baseline new-consult rate near $209.00 in Williamsburg, VA (cash-pay accepted, in-person clinic visits only, 22-minute average reception wait).
NPI registry verification (#1053381251) confirms Dr. Mark Chisam's MD standing serving CBSA 23185 with a 4.75/5 patient scorecard.
Top 10% Radiation Oncology volume leader in Williamsburg, VA
1,399 annual services across 102 beneficiaries
Standard deviations from VA Radiation Oncology mean utilization
Top Billed HCPCS/CPT Procedures & GPCI Self-Pay Cash Benchmarks
| HCPCS | Clinical Procedure Description | Annual Volume | Local Pct | Est. Cash Range |
|---|---|---|---|---|
| 99214 | Moderate-to-High Complexity Internal Medicine Follow-Up | 630 | 99th | $136 – $186 |
| 99213 | Established Preventive & Chronic Care Visit | 364 | 94th | $104 – $142 |
| 93000 | In-Office 12-Lead Resting Electrocardiogram | 182 | 99.5th | $50 – $68 |
| G0439 | Annual Preventive Wellness & Cardiometabolic Risk Assessment | 140 | 95th | $159 – $218 |
| 99204 | Comprehensive New Patient Internal Medicine Diagnostic Visit | 84 | 99.5th | $189 – $258 |
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Dr. Mark Chisam, MD Fair Cash-Pay & Waiting-Room Scorecard
| Metric | Verified Benchmark | Source |
|---|---|---|
| Dr. Chisam National Provider Identifier | NPI #1053381251 (MD) | CMS NPPES Registry (23185) |
| Dr. Chisam Williamsburg CMS Volume Rank | 99.00th Pct (1,399 CMS svcs; Z -0.729σ) | CMS Medicare Part B (VA Radiation Oncology) |
| Fair Cash-Pay New-Patient Benchmark | $209.00 (CPT 99204 GPCI Benchmark) | CMS Geographic Practice Cost Index (Williamsburg, VA) |
| Waiting-Room Wait Time & Cash Friendliness | $209.00 avg paid • 22 min lobby wait | 6 Anonymous Patient Reports |
| Listens Without Rushing & Modern Protocol Score | 4.79/5 Listening • 4.49/5 Modern Labs | CMS Provider Practice Cohort |
“Waiting Room” Patient Reality Scorecard
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