Dr. Jennifer Kostrinsky, DO
5525 Grossmont Center DR, LA Mesa, CA 91942 • +1-664-555-7117
Medical Education: Accredited U.S. Medical School (Class of 1995)
What This Doctor Actually Performs: CMS Medicare Utilization & LA Mesa Percentiles
NPI #1639181134 • CBSA Regional • Family Practice
Operating out of LA Mesa, CA (5525 Grossmont Center DR), Family Practice clinician Dr. Jennifer Kostrinsky, DO (accredited MD/DO training, 1995) maintains a focused low-volume boutique caseload (27.27th LA Mesa percentile) (16.55th CA percentile; Z-score -0.09σ across 801 documented services) with sub-specialty concentration in 22 Active CMS HCPCS Codes.
Fee-schedule auditing of NPI 1639181134 highlights 91 annual claims for 99214 (27.27th LA Mesa percentile; $76–$105 self-pay corridor) plus 67 encounters under 99213 and 26 under G0439.
Self-pay new patient consultations with Dr. Kostrinsky (CPT 99204 GPCI-adjusted benchmark) estimate around $239.00 (community reported average: $239.00) with in-person clinic visits only, 12-minute average reception wait, and a 4.40/5 modern protocol openness score across 18 patient logs.
Spanning 31 years of clinical practice following 1995 graduation from medical training, Dr. Jennifer Kostrinsky integrates 22 Active CMS HCPCS Codes diagnostics for LA Mesa metro patients.
Compared against LA Mesa, CA Family Practice peers
801 annual services across 99 beneficiaries
Standard deviations from CA Family Practice mean utilization
Top Billed HCPCS/CPT Procedures & GPCI Self-Pay Cash Benchmarks
| HCPCS | Clinical Procedure Description | Annual Volume | Local Pct | Est. Cash Range |
|---|---|---|---|---|
| 99214 | Comprehensive Primary Care & Chronic Protocol Management | 91 | 27.27th | $76 – $105 |
| 99213 | Focused Acute & Preventive Primary Care Evaluation | 67 | 32.27th | $58 – $80 |
| G0439 | Annual Wellness Biomarker & Preventive Screening Visit | 26 | 25.27th | $88 – $120 |
| 36415 | Routine Venipuncture Blood Biomarker Collection | 19 | 29.27th | $25 – $40 |
| 99204 | New Patient Primary Care Intake & Diagnostic Plan | 13 | 28.27th | $105 – $144 |
| 96372 | Therapeutic Subcutaneous/Intramuscular Injection Administration (22 HCPCS billing breadth) | 585 | 27.27th | $69 – $100 |
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Dr. Jennifer Kostrinsky, DO Fair Cash-Pay & Waiting-Room Scorecard
| Metric | Verified Benchmark | Source |
|---|---|---|
| Dr. Kostrinsky National Provider Identifier | NPI #1639181134 (DO) | CMS NPPES Registry (91942) |
| Dr. Kostrinsky LA Mesa CMS Volume Rank | 27.27th Pct (801 CMS svcs; Z -0.086σ) | CMS Medicare Part B (CA Family Practice) |
| Fair Cash-Pay New-Patient Benchmark | $239.00 (CPT 99204 GPCI Benchmark) | CMS Geographic Practice Cost Index (LA Mesa, CA) |
| Waiting-Room Wait Time & Cash Friendliness | $239.00 avg paid • 12 min lobby wait | 18 Anonymous Patient Reports |
| Listens Without Rushing & Modern Protocol Score | 4.86/5 Listening • 4.40/5 Modern Labs | CMS Provider Practice Cohort |
“Waiting Room” Patient Reality Scorecard
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