Dr. Kook Chang, MD
14600 Sherman Way Ste 270, Van Nuys, CA 91405 • +1-356-555-9668
Medical Education: Accredited U.S. Medical School (Class of 2004)
What This Doctor Actually Performs: CMS Medicare Utilization & Van Nuys Percentiles
NPI #1356442354 • CBSA Regional • Internal Medicine
Operating out of Van Nuys, CA (14600 Sherman Way Ste 270), Internal Medicine clinician Dr. Kook Chang, MD (accredited MD/DO training, 2004) maintains a focused low-volume boutique caseload (26.32th Van Nuys percentile) (37.44th CA percentile; Z-score -0.09σ across 1,175 documented services) with sub-specialty concentration in 13 Active CMS HCPCS Codes.
Medicare Part B line-item claims for Dr. Kook Chang (91405) place 99214 at the top of the practice ledger (501 yearly units, 26.32th metro rank), rounded out by 99213 and 93000.
Cash-pay intake data for NPI 1356442354 (14600 Sherman Way Ste 270, Van Nuys) indicates $239.00 typical out-of-pocket visit spend against a $239.00 locality benchmark, paired with 9-minute average reception wait and 4.89/5 biomarker openness.
Clinical background for Dr. Chang (MD, NPI #1356442354) includes accredited doctoral training (2004, 22 yrs in practice) and dedicated on-site consultations at 14600 Sherman Way Ste 270.
Compared against Van Nuys, CA Internal Medicine peers
1,175 annual services across 174 beneficiaries
Standard deviations from CA Internal Medicine 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 | 501 | 26.32th | $154 – $211 |
| 99213 | Established Preventive & Chronic Care Visit | 290 | 28.32th | $118 – $161 |
| 93000 | In-Office 12-Lead Resting Electrocardiogram | 145 | 21.32th | $56 – $77 |
| G0439 | Annual Preventive Wellness & Cardiometabolic Risk Assessment | 111 | 24.32th | $180 – $247 |
| 99204 | Comprehensive New Patient Internal Medicine Diagnostic Visit | 67 | 21.32th | $214 – $293 |
| 96372 | Therapeutic Subcutaneous/Intramuscular Injection Administration (13 HCPCS billing breadth) | 61 | 26.32th | $139 – $202 |
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Dr. Kook Chang, MD Fair Cash-Pay & Waiting-Room Scorecard
| Metric | Verified Benchmark | Source |
|---|---|---|
| Dr. Chang National Provider Identifier | NPI #1356442354 (MD) | CMS NPPES Registry (91405) |
| Dr. Chang Van Nuys CMS Volume Rank | 26.32th Pct (1,175 CMS svcs; Z -0.094σ) | CMS Medicare Part B (CA Internal Medicine) |
| Fair Cash-Pay New-Patient Benchmark | $239.00 (CPT 99204 GPCI Benchmark) | CMS Geographic Practice Cost Index (Van Nuys, CA) |
| Waiting-Room Wait Time & Cash Friendliness | $239.00 avg paid • 9 min lobby wait | 9 Anonymous Patient Reports |
| Listens Without Rushing & Modern Protocol Score | 4.91/5 Listening • 4.89/5 Modern Labs | CMS Provider Practice Cohort |
“Waiting Room” Patient Reality Scorecard
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