Dr. David Chang, MD
36320 Inland Valley DR, Suite 308, Wildomar, CA 92595 • +1-361-555-9318
Medical Education: Accredited U.S. Medical School (Class of 2005)
What This Doctor Actually Performs: CMS Medicare Utilization & Wildomar Percentiles
NPI #1043266240 • CBSA Regional • Nephrology
Operating out of Wildomar, CA (36320 Inland Valley DR, Suite 308), Nephrology clinician Dr. David Chang, MD (accredited MD/DO training, 2005) maintains a mid-cohort balanced caseload (50th Wildomar percentile) (40.47th CA percentile; Z-score -0.30σ across 1,806 documented services) with sub-specialty concentration in 26 Active CMS HCPCS Codes.
Fee-schedule auditing of NPI 1043266240 highlights 867 annual claims for 99214 (50th Wildomar percentile; $288–$394 self-pay corridor) plus 397 encounters under 90960 and 325 under 99215.
For out-of-network patients contacting +1-361-555-9318, Dr. Chang's practice posts a $239.00 GPCI self-pay consult estimate ($239.00 patient-logged median, 4.66/5 composite reality score over 13 submissions).
Spanning 21 years of clinical practice following 2005 graduation from medical training, Dr. David Chang integrates 26 Active CMS HCPCS Codes diagnostics for Wildomar metro patients.
Compared against Wildomar, CA Nephrology peers
1,806 annual services across 379 beneficiaries
Standard deviations from CA Nephrology mean utilization
Top Billed HCPCS/CPT Procedures & GPCI Self-Pay Cash Benchmarks
| HCPCS | Clinical Procedure Description | Annual Volume | Local Pct | Est. Cash Range |
|---|---|---|---|---|
| 99214 | Chronic Kidney Disease eGFR, uACR & Electrolyte Management | 867 | 50th | $288 – $394 |
| 90960 | Monthly Adult ESRD Renal Replacement Oversight | 397 | 51th | $575 – $788 |
| 99215 | High-Complexity Cardiorenal & Resistant Hypertension Visit | 325 | 48th | $419 – $575 |
| 99204 | New Patient Nephrology & Proteinuria Consultation | 217 | 55th | $395 – $542 |
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Dr. David Chang, MD Fair Cash-Pay & Waiting-Room Scorecard
| Metric | Verified Benchmark | Source |
|---|---|---|
| Dr. Chang National Provider Identifier | NPI #1043266240 (MD) | CMS NPPES Registry (92595) |
| Dr. Chang Wildomar CMS Volume Rank | 50.00th Pct (1,806 CMS svcs; Z -0.298σ) | CMS Medicare Part B (CA Nephrology) |
| Fair Cash-Pay New-Patient Benchmark | $239.00 (CPT 99204 GPCI Benchmark) | CMS Geographic Practice Cost Index (Wildomar, CA) |
| Waiting-Room Wait Time & Cash Friendliness | $239.00 avg paid • 21 min lobby wait | 13 Anonymous Patient Reports |
| Listens Without Rushing & Modern Protocol Score | 4.86/5 Listening • 4.79/5 Modern Labs | CMS Provider Practice Cohort |
“Waiting Room” Patient Reality Scorecard
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