Dr. John Mays, MD
969 N Mason Rd Ste 110, Saint Louis, MO 63141 • +1-642-555-5609
Medical Education: Accredited U.S. Medical School (Class of 1996)
What This Doctor Actually Performs: CMS Medicare Utilization & Saint Louis Percentiles
NPI #1083108062 • CBSA Regional • Internal Medicine
CMS Medicare Part B utilization records credit Dr. John Mays (MD, NPI 1083108062) at 969 N Mason Rd Ste 110 in Saint Louis with 1,664 annual clinical services (481 beneficiaries), corresponding to a -0.10σ regional deviation and mid-cohort balanced caseload (60.17th Saint Louis percentile) with sub-specialty concentration in 32 Active CMS HCPCS Codes.
Procedural volume for Dr. Mays is led by HCPCS 99214 (Moderate-to-High Complexity Internal Medicine Follow-Up — 689 annual services, $124–$169 GPCI cash estimate), followed by CPT 99213 (Established Preventive & Chronic Care Visit, 398/yr) and CPT 93000 (In-Office 12-Lead Resting Electrocardiogram, 199/yr).
For out-of-network patients contacting +1-642-555-5609, Dr. Mays's practice posts a $209.00 GPCI self-pay consult estimate ($209.00 patient-logged median, 4.77/5 composite reality score over 4 submissions).
NPI registry verification (#1083108062) confirms Dr. John Mays's MD standing serving CBSA 63141 with a 4.77/5 patient scorecard.
Compared against Saint Louis, MO Internal Medicine peers
1,664 annual services across 481 beneficiaries
Standard deviations from MO 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 | 689 | 60.17th | $124 – $169 |
| 99213 | Established Preventive & Chronic Care Visit | 398 | 58.17th | $95 – $130 |
| 93000 | In-Office 12-Lead Resting Electrocardiogram | 199 | 63.17th | $45 – $62 |
| G0439 | Annual Preventive Wellness & Cardiometabolic Risk Assessment | 153 | 63.17th | $145 – $199 |
| 99204 | Comprehensive New Patient Internal Medicine Diagnostic Visit | 92 | 57.17th | $172 – $236 |
| 96372 | Therapeutic Subcutaneous/Intramuscular Injection Administration (32 HCPCS billing breadth) | 134 | 60.17th | $112 – $162 |
Are you Dr. John Mays? Embed your Official DotMD Verification Badge (0-JS SVG)
Paste this lightweight SVG snippet onto your clinic bio page in Saint Louis, MO:
<a href="https://dotmd.com/doctors/john-mays-md-saint-louis-mo-1083108062" title="Dr. John Mays, MD - Verified CMS Utilization on DotMD"><img src="https://dotmd.com/badges/npi/1083108062.svg" alt="Dr. John Mays Internal Medicine Badge" width="280" height="72" /></a>
Dr. John Mays, MD Fair Cash-Pay & Waiting-Room Scorecard
| Metric | Verified Benchmark | Source |
|---|---|---|
| Dr. Mays National Provider Identifier | NPI #1083108062 (MD) | CMS NPPES Registry (63141) |
| Dr. Mays Saint Louis CMS Volume Rank | 60.17th Pct (1,664 CMS svcs; Z -0.098σ) | CMS Medicare Part B (MO Internal Medicine) |
| Fair Cash-Pay New-Patient Benchmark | $209.00 (CPT 99204 GPCI Benchmark) | CMS Geographic Practice Cost Index (Saint Louis, MO) |
| Waiting-Room Wait Time & Cash Friendliness | $209.00 avg paid • 16 min lobby wait | 4 Anonymous Patient Reports |
| Listens Without Rushing & Modern Protocol Score | 4.82/5 Listening • 4.84/5 Modern Labs | CMS Provider Practice Cohort |
“Waiting Room” Patient Reality Scorecard
Ask our AI Specialists anything about Dr. John Mays
Other High-Volume Internal Medicine Specialists in Saint Louis, MO
Ranked strictly by CMS Medicare volumeDr. Mays Waiting-Room Q&A & Patient Experience Logs
Anonymous patient-submitted wait times, cash visit fees, and bedside manner discussions in Saint Louis, MO.
Share your self-pay visit cost and lobby wait time—no account, email, or IP stored.
Filter Dr. John Mays community threads and patient logs by age, biological sex, dosage, and treatment duration.