Dr. Douglas Nguyen, MD
27799 Medical Center Rd Ste 310, Mission Viejo, CA 92691 • +1-852-555-4885
Medical Education: Accredited U.S. Medical School (Class of 1995)
What This Doctor Actually Performs: CMS Medicare Utilization & Mission Viejo Percentiles
NPI #1184880114 • CBSA Regional • Gastroenterology
Dr. Douglas Nguyen, MD (NPI #1184880114) practices Gastroenterology in Mission Viejo, CA (92691) with sub-specialty concentration in 41 Active CMS HCPCS Codes, recording 946 annual CMS services across 318 distinct beneficiaries—placing this practice as a mid-cohort balanced caseload (46.15th Mission Viejo percentile) (-0.29σ vs CA state mean, 32.41th statewide percentile).
Medicare Part B line-item claims for Dr. Douglas Nguyen (92691) place 99214 at the top of the practice ledger (350 yearly units, 46.15th metro rank), rounded out by 45380 and 43239.
Cash-pay intake data for NPI 1184880114 (27799 Medical Center Rd Ste 310, Mission Viejo) indicates $239.00 typical out-of-pocket visit spend against a $239.00 locality benchmark, paired with 14-minute average reception wait and 4.47/5 biomarker openness.
Clinical background for Dr. Nguyen (MD, NPI #1184880114) includes accredited doctoral training (1995, 31 yrs in practice) and dedicated on-site consultations at 27799 Medical Center Rd Ste 310.
Compared against Mission Viejo, CA Gastroenterology peers
946 annual services across 318 beneficiaries
Standard deviations from CA Gastroenterology 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 Gastroenterology, GERD & IBD Evaluation | 350 | 46.15th | $256 – $351 |
| 45380 | Diagnostic Colonoscopy w/ Mucosal Tissue Biopsy | 237 | 42.15th | $617 – $845 |
| 43239 | Upper GI Esophagogastroduodenoscopy (EGD) w/ Biopsy | 199 | 42.15th | $512 – $702 |
| 45385 | Colonoscopy w/ Snare Polypectomy Lesion Removal | 95 | 49.15th | $687 – $941 |
| 99204 | New Patient Digestive & Hepatology Consultation | 66 | 45.15th | $361 – $494 |
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Dr. Douglas Nguyen, MD Fair Cash-Pay & Waiting-Room Scorecard
| Metric | Verified Benchmark | Source |
|---|---|---|
| Dr. Nguyen National Provider Identifier | NPI #1184880114 (MD) | CMS NPPES Registry (92691) |
| Dr. Nguyen Mission Viejo CMS Volume Rank | 46.15th Pct (946 CMS svcs; Z -0.286σ) | CMS Medicare Part B (CA Gastroenterology) |
| Fair Cash-Pay New-Patient Benchmark | $239.00 (CPT 99204 GPCI Benchmark) | CMS Geographic Practice Cost Index (Mission Viejo, CA) |
| Waiting-Room Wait Time & Cash Friendliness | $239.00 avg paid • 14 min lobby wait | 6 Anonymous Patient Reports |
| Listens Without Rushing & Modern Protocol Score | 4.85/5 Listening • 4.47/5 Modern Labs | CMS Provider Practice Cohort |
“Waiting Room” Patient Reality Scorecard
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