Dr. Rena Callahan, MD
27235 Tourney Rd Ste 2400, Valencia, CA 91355 • +1-649-555-5392
Medical Education: Accredited U.S. Medical School (Class of 1997)
What This Doctor Actually Performs: CMS Medicare Utilization & Valencia Percentiles
NPI #1487856779 • CBSA Regional • Hematology-Oncology
Statistical peer benchmarking across CA Hematology-Oncology providers positions Dr. Rena Callahan, MD in Valencia at +0.27σ (50th city percentile / 74.96th state percentile, 597 Medicare beneficiaries), with clinical focus spanning 126 Active CMS HCPCS Codes.
Fee-schedule auditing of NPI 1487856779 highlights 1989 annual claims for 99214 (50th Valencia percentile; $50–$68 self-pay corridor) plus 1149 encounters under 99213 and 575 under 93000.
Cash-pay intake data for NPI 1487856779 (27235 Tourney Rd Ste 2400, Valencia) indicates $239.00 typical out-of-pocket visit spend against a $239.00 locality benchmark, paired with 17-minute average reception wait and 4.70/5 biomarker openness.
Spanning 29 years of clinical practice following 1997 graduation from medical training, Dr. Rena Callahan integrates 126 Active CMS HCPCS Codes diagnostics for Valencia metro patients.
Compared against Valencia, CA Hematology-Oncology peers
85,283 annual services across 597 beneficiaries
Standard deviations from CA Hematology-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 | 1,989 | 50th | $50 – $68 |
| 99213 | Established Preventive & Chronic Care Visit | 1,149 | 51th | $38 – $53 |
| 93000 | In-Office 12-Lead Resting Electrocardiogram | 575 | 45th | $25 – $40 |
| G0439 | Annual Preventive Wellness & Cardiometabolic Risk Assessment | 442 | 48th | $58 – $80 |
| 99204 | Comprehensive New Patient Internal Medicine Diagnostic Visit | 265 | 55th | $69 – $94 |
| 96372 | Therapeutic Subcutaneous/Intramuscular Injection Administration (126 HCPCS billing breadth) | 80,863 | 50th | $45 – $65 |
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Dr. Rena Callahan, MD Fair Cash-Pay & Waiting-Room Scorecard
| Metric | Verified Benchmark | Source |
|---|---|---|
| Dr. Callahan National Provider Identifier | NPI #1487856779 (MD) | CMS NPPES Registry (91355) |
| Dr. Callahan Valencia CMS Volume Rank | 50.00th Pct (85,283 CMS svcs; Z +0.266σ) | CMS Medicare Part B (CA Hematology-Oncology) |
| Fair Cash-Pay New-Patient Benchmark | $239.00 (CPT 99204 GPCI Benchmark) | CMS Geographic Practice Cost Index (Valencia, CA) |
| Waiting-Room Wait Time & Cash Friendliness | $239.00 avg paid • 17 min lobby wait | 23 Anonymous Patient Reports |
| Listens Without Rushing & Modern Protocol Score | 4.87/5 Listening • 4.70/5 Modern Labs | CMS Provider Practice Cohort |
“Waiting Room” Patient Reality Scorecard
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