Dr. John Mahmarian, MD
6550 Fannin St, Smith Tower, Suite 1901, Houston, TX 77030 • +1-670-555-3053
Medical Education: Accredited U.S. Medical School (Class of 2007)
What This Doctor Actually Performs: CMS Medicare Utilization & Houston Percentiles
NPI #1114957511 • CBSA 26420 • Cardiology
Statistical peer benchmarking across TX Cardiology providers positions Dr. John Mahmarian, MD in Houston at -0.45σ (44.6th city percentile / 36.28th state percentile, 808 Medicare beneficiaries), with clinical focus spanning 28 Active CMS HCPCS Codes.
Among 6 tracked CMS fee-schedule codes for Dr. Mahmarian (averaging 2.6 services per beneficiary), 99214 (Established Cardiology Consultation & Hemodynamic Review) represents 35% of tracked volume (744 encounters), paired with 93000 (548x).
Uninsured and high-deductible cash patients visiting Dr. John Mahmarian in Houston (77030) face an estimated $212.00 initial evaluation fee at 6550 Fannin St, Smith Tower, Suite 1901 (in-person clinic visits only; 11-minute average reception wait; bedside manner 4.64/5 from 3 verified reports).
Patients evaluating Dr. John Mahmarian in ZIP 77030 note 19 years of post-doctoral tenure (null, 2007) alongside 2.6 annual CMS procedures per patient.
Compared against Houston, TX Cardiology peers
2,110 annual services across 808 beneficiaries
Standard deviations from TX Cardiology mean utilization
Top Billed HCPCS/CPT Procedures & GPCI Self-Pay Cash Benchmarks
| HCPCS | Clinical Procedure Description | Annual Volume | Local Pct | Est. Cash Range |
|---|---|---|---|---|
| 99214 | Established Cardiology Consultation & Hemodynamic Review | 744 | 44.6th | $123 – $169 |
| 93000 | 12-Lead Resting Electrocardiogram (ECG) w/ Interpretation | 548 | 47.6th | $48 – $66 |
| 93306 | Complete Transthoracic Echocardiography w/ Doppler & Color Flow | 352 | 46.6th | $230 – $315 |
| 93224 | 24-Hour Ambulatory ECG Rhythm Monitoring & Analysis | 196 | 41.6th | $144 – $198 |
| 99204 | Comprehensive New Patient Cardiovascular Risk Evaluation | 117 | 39.6th | $177 – $242 |
| 96372 | Therapeutic Subcutaneous/Intramuscular Injection Administration (28 HCPCS billing breadth) | 152 | 44.6th | $111 – $161 |
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Dr. John Mahmarian, MD Fair Cash-Pay & Waiting-Room Scorecard
| Metric | Verified Benchmark | Source |
|---|---|---|
| Dr. Mahmarian National Provider Identifier | NPI #1114957511 (MD) | CMS NPPES Registry (77030) |
| Dr. Mahmarian Houston CMS Volume Rank | 44.60th Pct (2,110 CMS svcs; Z -0.450σ) | CMS Medicare Part B (TX Cardiology) |
| Fair Cash-Pay New-Patient Benchmark | $212.00 (CPT 99204 GPCI Benchmark) | CMS Geographic Practice Cost Index (Houston, TX) |
| Waiting-Room Wait Time & Cash Friendliness | $212.00 avg paid • 11 min lobby wait | 3 Anonymous Patient Reports |
| Listens Without Rushing & Modern Protocol Score | 4.64/5 Listening • 4.46/5 Modern Labs | CMS Provider Practice Cohort |
“Waiting Room” Patient Reality Scorecard
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