Dr. Marc Kerner, MD
18350 Roscoe Blvd Ste 318, Northridge, CA 91325 • +1-837-555-3680
Medical Education: Accredited U.S. Medical School (Class of 1998)
What This Doctor Actually Performs: CMS Medicare Utilization & Northridge Percentiles
NPI #1275565608 • CBSA Regional • Otolaryngology
Within the Northridge, CA (CBSA local) Otolaryngology cohort, Dr. Marc Kerner, MD with sub-specialty concentration in 74 Active CMS HCPCS Codes ranks at the 99th municipal percentile and 88.93th CA percentile (+0.17σ Z-score) based on 3,602 billed procedures for 663 patients.
Procedural volume for Dr. Kerner is led by HCPCS 99213 (Focused Ear, Nose, Sinus & Throat Examination — 974 annual services, $235–$323 GPCI cash estimate), followed by CPT 31231 (Diagnostic Rigid/Flexible Nasal & Sinus Endoscopy, 716/yr) and CPT 31575 (Flexible Fiberoptic Laryngoscopy Vocal Cord Inspection, 544/yr).
Cash-pay intake data for NPI 1275565608 (18350 Roscoe Blvd Ste 318, Northridge) indicates $239.00 typical out-of-pocket visit spend against a $239.00 locality benchmark, paired with 18-minute average reception wait and 4.48/5 biomarker openness.
NPI registry verification (#1275565608) confirms Dr. Marc Kerner's MD standing serving CBSA 91325 with a 4.81/5 patient scorecard.
Top 10% Otolaryngology volume leader in Northridge, CA
3,602 annual services across 663 beneficiaries
Standard deviations from CA Otolaryngology 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 Ear, Nose, Sinus & Throat Examination | 974 | 99th | $235 – $323 |
| 31231 | Diagnostic Rigid/Flexible Nasal & Sinus Endoscopy | 716 | 99.5th | $473 – $649 |
| 31575 | Flexible Fiberoptic Laryngoscopy Vocal Cord Inspection | 544 | 99.5th | $345 – $473 |
| 92557 | Comprehensive Pure-Tone Audiometry & Speech Recognition | 372 | 99.5th | $166 – $228 |
| 69210 | Instrumented Impacted Cerumen Removal Under Microscopy | 258 | 95th | $148 – $203 |
| 96372 | Therapeutic Subcutaneous/Intramuscular Injection Administration (74 HCPCS billing breadth) | 737 | 99th | $265 – $384 |
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Dr. Marc Kerner, MD Fair Cash-Pay & Waiting-Room Scorecard
| Metric | Verified Benchmark | Source |
|---|---|---|
| Dr. Kerner National Provider Identifier | NPI #1275565608 (MD) | CMS NPPES Registry (91325) |
| Dr. Kerner Northridge CMS Volume Rank | 99.00th Pct (3,602 CMS svcs; Z +0.172σ) | CMS Medicare Part B (CA Otolaryngology) |
| Fair Cash-Pay New-Patient Benchmark | $239.00 (CPT 99204 GPCI Benchmark) | CMS Geographic Practice Cost Index (Northridge, CA) |
| Waiting-Room Wait Time & Cash Friendliness | $239.00 avg paid • 18 min lobby wait | 24 Anonymous Patient Reports |
| Listens Without Rushing & Modern Protocol Score | 4.66/5 Listening • 4.48/5 Modern Labs | CMS Provider Practice Cohort |
“Waiting Room” Patient Reality Scorecard
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