Dr. Karen Isselbacher, MD
70 Hastings St, Wellesley, MA 02481 • +1-787-555-2563
Medical Education: Accredited U.S. Medical School (Class of 2010)
What This Doctor Actually Performs: CMS Medicare Utilization & Wellesley Percentiles
NPI #1508822867 • CBSA Regional • Internal Medicine
Operating out of Wellesley, MA (70 Hastings St), Internal Medicine clinician Dr. Karen Isselbacher, MD (accredited MD/DO training, 2010) maintains a focused low-volume boutique caseload (5.56th Wellesley percentile) (9.34th MA percentile; Z-score -0.31σ across 711 documented services) with sub-specialty concentration in 35 Active CMS HCPCS Codes.
Granular CPT/HCPCS billing distribution at 70 Hastings St shows Dr. Karen Isselbacher's primary concentration in Moderate-to-High Complexity Internal Medicine Follow-Up (code 99214: 294x/yr, 12th local percentile) alongside Established Preventive & Chronic Care Visit (99213: 170x/yr, $117–$160).
Self-pay new patient consultations with Dr. Isselbacher (CPT 99204 GPCI-adjusted benchmark) estimate around $224.00 (community reported average: $224.00) with in-person clinic visits only, 15-minute average reception wait, and a 4.92/5 modern protocol openness score across 15 patient logs.
NPI registry verification (#1508822867) confirms Dr. Karen Isselbacher's MD standing serving CBSA 02481 with a 4.92/5 patient scorecard.
Compared against Wellesley, MA Internal Medicine peers
711 annual services across 109 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 | 294 | 12th | $153 – $210 |
| 99213 | Established Preventive & Chronic Care Visit | 170 | 12th | $117 – $160 |
| 93000 | In-Office 12-Lead Resting Electrocardiogram | 85 | 12th | $56 – $77 |
| G0439 | Annual Preventive Wellness & Cardiometabolic Risk Assessment | 65 | 12th | $180 – $246 |
| 99204 | Comprehensive New Patient Internal Medicine Diagnostic Visit | 39 | 12th | $213 – $292 |
| 96372 | Therapeutic Subcutaneous/Intramuscular Injection Administration (35 HCPCS billing breadth) | 58 | 5.56th | $138 – $200 |
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Dr. Karen Isselbacher, MD Fair Cash-Pay & Waiting-Room Scorecard
| Metric | Verified Benchmark | Source |
|---|---|---|
| Dr. Isselbacher National Provider Identifier | NPI #1508822867 (MD) | CMS NPPES Registry (02481) |
| Dr. Isselbacher Wellesley CMS Volume Rank | 5.56th Pct (711 CMS svcs; Z -0.309σ) | CMS Medicare Part B (MA Internal Medicine) |
| Fair Cash-Pay New-Patient Benchmark | $224.00 (CPT 99204 GPCI Benchmark) | CMS Geographic Practice Cost Index (Wellesley, MA) |
| Waiting-Room Wait Time & Cash Friendliness | $224.00 avg paid • 15 min lobby wait | 15 Anonymous Patient Reports |
| Listens Without Rushing & Modern Protocol Score | 4.92/5 Listening • 4.92/5 Modern Labs | CMS Provider Practice Cohort |
“Waiting Room” Patient Reality Scorecard
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