Dr. Nehemiah Tan, MD
102 W Kenwood Ave, Ste 110, Decatur, IL 62526 • +1-514-555-8341
Medical Education: Accredited U.S. Medical School (Class of 2006)
What This Doctor Actually Performs: CMS Medicare Utilization & Decatur Percentiles
NPI #1578520995 • CBSA Regional • Rheumatology
Statistical peer benchmarking across IL Rheumatology providers positions Dr. Nehemiah Tan, MD in Decatur at -0.43σ (99th city percentile / 51.06th state percentile, 511 Medicare beneficiaries), with clinical focus spanning 23 Active CMS HCPCS Codes.
Procedural volume for Dr. Tan is led by HCPCS 99214 (Autoimmune Arthritis & Biologic/DMARD Safety Evaluation — 753 annual services, $66–$91 GPCI cash estimate), followed by CPT 20610 (Large Joint Synovial Arthrocentesis or Corticosteroid Injection, 344/yr) and CPT 96413 (Intravenous Biologic Infusion Therapy (First Hour), 246/yr).
Self-pay new patient consultations with Dr. Tan (CPT 99204 GPCI-adjusted benchmark) estimate around $218.00 (community reported average: $218.00) with hybrid in-clinic and telehealth video consults, 14-minute average reception wait, and a 4.46/5 modern protocol openness score across 20 patient logs.
Patients evaluating Dr. Nehemiah Tan in ZIP 62526 note 20 years of post-doctoral tenure (null, 2006) alongside 39.7 annual CMS procedures per patient.
Top 10% Rheumatology volume leader in Decatur, IL
20,300 annual services across 511 beneficiaries
Standard deviations from IL Rheumatology mean utilization
Top Billed HCPCS/CPT Procedures & GPCI Self-Pay Cash Benchmarks
| HCPCS | Clinical Procedure Description | Annual Volume | Local Pct | Est. Cash Range |
|---|---|---|---|---|
| 99214 | Autoimmune Arthritis & Biologic/DMARD Safety Evaluation | 753 | 99th | $66 – $91 |
| 20610 | Large Joint Synovial Arthrocentesis or Corticosteroid Injection | 344 | 94th | $53 – $72 |
| 96413 | Intravenous Biologic Infusion Therapy (First Hour) | 246 | 94th | $91 – $125 |
| 76881 | Complete Joint Synovitis High-Resolution Ultrasound | 164 | 99.5th | $69 – $95 |
| 99204 | New Patient Autoimmune & Rheumatology Diagnostic Workup | 131 | 97th | $91 – $125 |
| 96372 | Therapeutic Subcutaneous/Intramuscular Injection Administration (23 HCPCS billing breadth) | 18,663 | 99th | $57 – $83 |
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Dr. Nehemiah Tan, MD Fair Cash-Pay & Waiting-Room Scorecard
| Metric | Verified Benchmark | Source |
|---|---|---|
| Dr. Tan National Provider Identifier | NPI #1578520995 (MD) | CMS NPPES Registry (62526) |
| Dr. Tan Decatur CMS Volume Rank | 99.00th Pct (20,300 CMS svcs; Z -0.433σ) | CMS Medicare Part B (IL Rheumatology) |
| Fair Cash-Pay New-Patient Benchmark | $218.00 (CPT 99204 GPCI Benchmark) | CMS Geographic Practice Cost Index (Decatur, IL) |
| Waiting-Room Wait Time & Cash Friendliness | $218.00 avg paid • 14 min lobby wait | 20 Anonymous Patient Reports |
| Listens Without Rushing & Modern Protocol Score | 4.87/5 Listening • 4.46/5 Modern Labs | CMS Provider Practice Cohort |
“Waiting Room” Patient Reality Scorecard
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