Dr. Mark Shields, MD
24221 Calle De LA Louisa, Suite 200, Laguna Hills, CA 92653 • +1-242-555-2140
Medical Education: Accredited U.S. Medical School (Class of 2000)
What This Doctor Actually Performs: CMS Medicare Utilization & Laguna Hills Percentiles
NPI #1366411555 • CBSA Regional • Internal Medicine
Operating out of Laguna Hills, CA (24221 Calle De LA Louisa, Suite 200), Internal Medicine clinician Dr. Mark Shields, MD (accredited MD/DO training, 2000) maintains a focused low-volume boutique caseload (16.13th Laguna Hills percentile) (36.66th CA percentile; Z-score -0.10σ across 1,153 documented services) with sub-specialty concentration in 46 Active CMS HCPCS Codes.
Fee-schedule auditing of NPI 1366411555 highlights 495 annual claims for 99214 (16.13th Laguna Hills percentile; $162–$222 self-pay corridor) plus 286 encounters under 99213 and 143 under 93000.
For out-of-network patients contacting +1-242-555-2140, Dr. Shields's practice posts a $239.00 GPCI self-pay consult estimate ($239.00 patient-logged median, 4.63/5 composite reality score over 14 submissions).
Spanning 26 years of clinical practice following 2000 graduation from medical training, Dr. Mark Shields integrates 46 Active CMS HCPCS Codes diagnostics for Laguna Hills metro patients.
Compared against Laguna Hills, CA Internal Medicine peers
1,153 annual services across 248 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 | 495 | 16.13th | $162 – $222 |
| 99213 | Established Preventive & Chronic Care Visit | 286 | 21.13th | $124 – $170 |
| 93000 | In-Office 12-Lead Resting Electrocardiogram | 143 | 12.13th | $59 – $81 |
| G0439 | Annual Preventive Wellness & Cardiometabolic Risk Assessment | 110 | 14.13th | $190 – $261 |
| 99204 | Comprehensive New Patient Internal Medicine Diagnostic Visit | 66 | 18.13th | $225 – $309 |
| 96372 | Therapeutic Subcutaneous/Intramuscular Injection Administration (46 HCPCS billing breadth) | 54 | 16.13th | $146 – $212 |
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Dr. Mark Shields, MD Fair Cash-Pay & Waiting-Room Scorecard
| Metric | Verified Benchmark | Source |
|---|---|---|
| Dr. Shields National Provider Identifier | NPI #1366411555 (MD) | CMS NPPES Registry (92653) |
| Dr. Shields Laguna Hills CMS Volume Rank | 16.13th Pct (1,153 CMS svcs; Z -0.095σ) | CMS Medicare Part B (CA Internal Medicine) |
| Fair Cash-Pay New-Patient Benchmark | $239.00 (CPT 99204 GPCI Benchmark) | CMS Geographic Practice Cost Index (Laguna Hills, CA) |
| Waiting-Room Wait Time & Cash Friendliness | $239.00 avg paid • 16 min lobby wait | 14 Anonymous Patient Reports |
| Listens Without Rushing & Modern Protocol Score | 4.59/5 Listening • 4.82/5 Modern Labs | CMS Provider Practice Cohort |
“Waiting Room” Patient Reality Scorecard
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