Dr. Karen Chahal, MD
330 Mount Auburn St, Cambridge, MA 02138 • +1-308-555-8629
Medical Education: Accredited U.S. Medical School (Class of 1996)
What This Doctor Actually Performs: CMS Medicare Utilization & Cambridge Percentiles
NPI #1477083749 • CBSA Regional • Internal Medicine
Within the Cambridge, MA (CBSA local) Internal Medicine cohort, Dr. Karen Chahal, MD with sub-specialty concentration in 18 Active CMS HCPCS Codes ranks at the 14th municipal percentile and 14.12th MA percentile (-0.30σ Z-score) based on 759 billed procedures for 198 patients.
Fee-schedule auditing of NPI 1477083749 highlights 342 annual claims for 99214 (14th Cambridge percentile; $173–$237 self-pay corridor) plus 197 encounters under 99213 and 99 under 93000.
Uninsured and high-deductible cash patients visiting Dr. Karen Chahal in Cambridge (02138) face an estimated $224.00 initial evaluation fee at 330 Mount Auburn St (hybrid in-clinic and telehealth video consults; 20-minute average reception wait; bedside manner 4.68/5 from 16 verified reports).
From 330 Mount Auburn St in Cambridge (+1-308-555-8629), Dr. Chahal, MD (30-year clinical track record) delivers 18 Active CMS HCPCS Codes care.
Compared against Cambridge, MA Internal Medicine peers
759 annual services across 198 beneficiaries
Standard deviations from MA 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 | 342 | 14th | $173 – $237 |
| 99213 | Established Preventive & Chronic Care Visit | 197 | 13th | $132 – $181 |
| 93000 | In-Office 12-Lead Resting Electrocardiogram | 99 | 12th | $63 – $86 |
| G0439 | Annual Preventive Wellness & Cardiometabolic Risk Assessment | 76 | 14th | $203 – $278 |
| 99204 | Comprehensive New Patient Internal Medicine Diagnostic Visit | 46 | 12th | $240 – $330 |
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Dr. Karen Chahal, MD Fair Cash-Pay & Waiting-Room Scorecard
| Metric | Verified Benchmark | Source |
|---|---|---|
| Dr. Chahal National Provider Identifier | NPI #1477083749 (MD) | CMS NPPES Registry (02138) |
| Dr. Chahal Cambridge CMS Volume Rank | 14.00th Pct (759 CMS svcs; Z -0.300σ) | CMS Medicare Part B (MA Internal Medicine) |
| Fair Cash-Pay New-Patient Benchmark | $224.00 (CPT 99204 GPCI Benchmark) | CMS Geographic Practice Cost Index (Cambridge, MA) |
| Waiting-Room Wait Time & Cash Friendliness | $224.00 avg paid • 20 min lobby wait | 16 Anonymous Patient Reports |
| Listens Without Rushing & Modern Protocol Score | 4.68/5 Listening • 4.87/5 Modern Labs | CMS Provider Practice Cohort |
“Waiting Room” Patient Reality Scorecard
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