1079 Madison Ave, Suite 303, San Francisco, CA 94159 • (243) 227-1471
Medical Education: Vanderbilt University School of Medicine (Class of 2016)
NPI #1609100512 • CBSA 41860 • Cardiology & Lipidology
Within the San Francisco, CA (CBSA 41860) Cardiology & Lipidology cohort, Dr. Julian Callahan, MD with sub-specialty concentration in Sports Cardiology & Cardiopulmonary VO2 Testing and Microvascular Angina & Heart Failure Prevention ranks at the 16.67th municipal percentile and 16.67th CA percentile (-0.63σ Z-score) based on 1,384 billed procedures for 512 patients.
Procedural volume for Dr. Callahan is led by HCPCS 93880 (Bilateral Carotid Artery Intima-Media Thickness & Plaque Duplex Scan — 334 annual services, $307–$421 GPCI cash estimate), followed by CPT 93015 (Treadmill Exercise Stress Test with Continuous Hemodynamic Monitoring, 284/yr) and CPT 93000 (12-Lead Resting Electrocardiogram with Conduction Interval Analysis, 233/yr).
At 1079 Madison Ave, Suite 303 (94159), Dr. Julian Callahan, MD accommodates direct self-pay scheduling (hybrid in-clinic and telehealth video consults) at ~$250.00 per new consult (4.64/5 bedside rating).
Clinical background for Dr. Callahan (MD, NPI #1609100512) includes Vanderbilt University School of Medicine (2016, 10 yrs in practice) and virtual + in-office availability across CA.
Compared against San Francisco, CA Cardiology & Lipidology peers
1,384 annual services across 512 beneficiaries
Standard deviations from CA Cardiology & Lipidology mean utilization
| HCPCS | Clinical Procedure Description | Annual Volume | Local Pct | Est. Cash Range |
|---|---|---|---|---|
| 93880 | Bilateral Carotid Artery Intima-Media Thickness & Plaque Duplex Scan | 334 | 25th | $307 – $421 |
| 93015 | Treadmill Exercise Stress Test with Continuous Hemodynamic Monitoring | 284 | 50th | $161 – $221 |
| 93000 | 12-Lead Resting Electrocardiogram with Conduction Interval Analysis | 233 | 33.33th | $40 – $55 |
| 93784 | 24-Hour Ambulatory Nocturnal Dipping Blood Pressure Telemetry | 228 | 0th | $109 – $149 |
| 94621 | Cardiopulmonary Exercise Testing (CPET) Peak VO2 Max & Ventilatory Threshold | 178 | 20th | $282 – $386 |
| 93247 | Extended 7-to-14-Day Ambulatory Patch Holter Arrhythmia Recording | 127 | 40th | $254 – $348 |
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| Metric | Verified Benchmark | Source |
|---|---|---|
| Dr. Callahan National Provider Identifier | NPI #1609100512 (MD) | CMS NPPES Registry (94159) |
| Dr. Callahan San Francisco CMS Volume Rank | 16.67th Pct (1,384 CMS svcs; Z -0.628σ) | CMS Medicare Part B (CA Cardiology & Lipidology) |
| Fair Cash-Pay New-Patient Benchmark | $250.00 (CPT 99204 GPCI Benchmark) | CMS Geographic Practice Cost Index (San Francisco, CA) |
| Waiting-Room Wait Time & Cash Friendliness | $250.00 avg paid • 16 min lobby wait | 11 Anonymous Patient Reports |
| Listens Without Rushing & Modern Protocol Score | 4.64/5 Listening • 4.82/5 Modern Labs | Vanderbilt University School of Medicine Practice Cohort |
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Booked a self-pay consultation with Dr. Callahan at 1079 Madison Ave, Suite 303 ($235 flat fee, 14-minute wait). Thorough breakdown of bilateral carotid artery intima-media thickness & plaque duplex scan (CPT 93880) benchmarks.
Dr. Callahan's team in San Francisco, CA provided written cash pricing ($263) ahead of arrival and saw me 19 minutes past check-in for Sports Cardiology & Cardiopulmonary VO2 Testing.
