Dr. Gregory Johnson, MD
40 Holland St, Harvard Vanguard Medical Associates, Somerville, MA 02144 • +1-919-555-7735
Medical Education: Accredited U.S. Medical School (Class of 2009)
What This Doctor Actually Performs: CMS Medicare Utilization & Somerville Percentiles
NPI #1942213509 • CBSA Regional • Internal Medicine
Operating out of Somerville, MA (40 Holland St, Harvard Vanguard Medical Associates), Internal Medicine clinician Dr. Gregory Johnson, MD (accredited MD/DO training, 2009) maintains a upper-quartile active clinical volume (85.71th Somerville percentile) (89.36th MA percentile; Z-score +0.32σ across 4,020 documented services) with sub-specialty concentration in 112 Active CMS HCPCS Codes.
Procedural volume for Dr. Johnson is led by HCPCS 99214 (Moderate-to-High Complexity Internal Medicine Follow-Up — 1023 annual services, $47–$64 GPCI cash estimate), followed by CPT 99213 (Established Preventive & Chronic Care Visit, 591/yr) and CPT 93000 (In-Office 12-Lead Resting Electrocardiogram, 296/yr).
At 40 Holland St, Harvard Vanguard Medical Associates (02144), Dr. Gregory Johnson, MD accommodates direct self-pay scheduling (hybrid in-clinic and telehealth video consults) at ~$224.00 per new consult (4.83/5 bedside rating).
From 40 Holland St, Harvard Vanguard Medical Associates in Somerville (+1-919-555-7735), Dr. Johnson, MD (17-year clinical track record) delivers 112 Active CMS HCPCS Codes care.
Compared against Somerville, MA Internal Medicine peers
4,020 annual services across 512 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 | 1,023 | 85.71th | $47 – $64 |
| 99213 | Established Preventive & Chronic Care Visit | 591 | 84.71th | $36 – $51 |
| 93000 | In-Office 12-Lead Resting Electrocardiogram | 296 | 90.71th | $25 – $40 |
| G0439 | Annual Preventive Wellness & Cardiometabolic Risk Assessment | 227 | 84.71th | $55 – $75 |
| 99204 | Comprehensive New Patient Internal Medicine Diagnostic Visit | 136 | 90.71th | $65 – $89 |
| 96372 | Therapeutic Subcutaneous/Intramuscular Injection Administration (112 HCPCS billing breadth) | 1,746 | 85.71th | $45 – $65 |
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Dr. Gregory Johnson, MD Fair Cash-Pay & Waiting-Room Scorecard
| Metric | Verified Benchmark | Source |
|---|---|---|
| Dr. Johnson National Provider Identifier | NPI #1942213509 (MD) | CMS NPPES Registry (02144) |
| Dr. Johnson Somerville CMS Volume Rank | 85.71th Pct (4,020 CMS svcs; Z +0.320σ) | CMS Medicare Part B (MA Internal Medicine) |
| Fair Cash-Pay New-Patient Benchmark | $224.00 (CPT 99204 GPCI Benchmark) | CMS Geographic Practice Cost Index (Somerville, MA) |
| Waiting-Room Wait Time & Cash Friendliness | $224.00 avg paid • 9 min lobby wait | 11 Anonymous Patient Reports |
| Listens Without Rushing & Modern Protocol Score | 4.83/5 Listening • 4.73/5 Modern Labs | CMS Provider Practice Cohort |
“Waiting Room” Patient Reality Scorecard
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