Dr. Dennis Grewal, DO
700 N Tustin Ave, Santa Ana, CA 92705 • +1-978-555-3272
Medical Education: Accredited U.S. Medical School (Class of 2015)
What This Doctor Actually Performs: CMS Medicare Utilization & Santa Ana Percentiles
NPI #1538556592 • CBSA Regional • Internal Medicine
CMS Medicare Part B utilization records credit Dr. Dennis Grewal (DO, NPI 1538556592) at 700 N Tustin Ave in Santa Ana with 1,430 annual clinical services (892 beneficiaries), corresponding to a -0.09σ regional deviation and focused low-volume boutique caseload (25th Santa Ana percentile) with sub-specialty concentration in 46 Active CMS HCPCS Codes.
Procedural volume for Dr. Grewal is led by HCPCS 99214 (Moderate-to-High Complexity Internal Medicine Follow-Up — 644 annual services, $123–$168 GPCI cash estimate), followed by CPT 99213 (Established Preventive & Chronic Care Visit, 372/yr) and CPT 93000 (In-Office 12-Lead Resting Electrocardiogram, 186/yr).
For out-of-network patients contacting +1-978-555-3272, Dr. Grewal's practice posts a $239.00 GPCI self-pay consult estimate ($239.00 patient-logged median, 4.91/5 composite reality score over 14 submissions).
NPI registry verification (#1538556592) confirms Dr. Dennis Grewal's DO standing serving CBSA 92705 with a 4.91/5 patient scorecard.
Compared against Santa Ana, CA Internal Medicine peers
1,430 annual services across 892 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 | 644 | 25th | $123 – $168 |
| 99213 | Established Preventive & Chronic Care Visit | 372 | 21th | $94 – $129 |
| 93000 | In-Office 12-Lead Resting Electrocardiogram | 186 | 26th | $45 – $62 |
| G0439 | Annual Preventive Wellness & Cardiometabolic Risk Assessment | 143 | 24th | $144 – $198 |
| 99204 | Comprehensive New Patient Internal Medicine Diagnostic Visit | 86 | 27th | $171 – $234 |
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Dr. Dennis Grewal, DO Fair Cash-Pay & Waiting-Room Scorecard
| Metric | Verified Benchmark | Source |
|---|---|---|
| Dr. Grewal National Provider Identifier | NPI #1538556592 (DO) | CMS NPPES Registry (92705) |
| Dr. Grewal Santa Ana CMS Volume Rank | 25.00th Pct (1,430 CMS svcs; Z -0.086σ) | CMS Medicare Part B (CA Internal Medicine) |
| Fair Cash-Pay New-Patient Benchmark | $239.00 (CPT 99204 GPCI Benchmark) | CMS Geographic Practice Cost Index (Santa Ana, CA) |
| Waiting-Room Wait Time & Cash Friendliness | $239.00 avg paid • 12 min lobby wait | 14 Anonymous Patient Reports |
| Listens Without Rushing & Modern Protocol Score | 4.83/5 Listening • 4.44/5 Modern Labs | CMS Provider Practice Cohort |
“Waiting Room” Patient Reality Scorecard
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