Dr. Douglas Grunwald, MD
2200 Whitney Ave Ste 360, Hamden, CT 06518 • +1-940-555-2636
Medical Education: Accredited U.S. Medical School (Class of 2017)
What This Doctor Actually Performs: CMS Medicare Utilization & Hamden Percentiles
NPI #1154616001 • CBSA Regional • Gastroenterology
Dr. Douglas Grunwald, MD (NPI #1154616001) practices Gastroenterology in Hamden, CT (06518) with sub-specialty concentration in 44 Active CMS HCPCS Codes, recording 10,087 annual CMS services across 274 distinct beneficiaries—placing this practice as a top-decile high-throughput specialist (90.91th percentile in Hamden) (+1.35σ vs CT state mean, 92.08th statewide percentile).
Medicare Part B line-item claims for Dr. Douglas Grunwald (06518) place 99214 at the top of the practice ledger (189 yearly units, 90.91th metro rank), rounded out by 45380 and 43239.
For out-of-network patients contacting +1-940-555-2636, Dr. Grunwald's practice posts a $209.00 GPCI self-pay consult estimate ($209.00 patient-logged median, 4.63/5 composite reality score over 10 submissions).
Patients evaluating Dr. Douglas Grunwald in ZIP 06518 note 9 years of post-doctoral tenure (null, 2017) alongside 36.8 annual CMS procedures per patient.
Top 10% Gastroenterology volume leader in Hamden, CT
10,087 annual services across 274 beneficiaries
Standard deviations from CT Gastroenterology mean utilization
Top Billed HCPCS/CPT Procedures & GPCI Self-Pay Cash Benchmarks
| HCPCS | Clinical Procedure Description | Annual Volume | Local Pct | Est. Cash Range |
|---|---|---|---|---|
| 99214 | Established Gastroenterology, GERD & IBD Evaluation | 189 | 90.91th | $42 – $57 |
| 45380 | Diagnostic Colonoscopy w/ Mucosal Tissue Biopsy | 128 | 95.91th | $100 – $137 |
| 43239 | Upper GI Esophagogastroduodenoscopy (EGD) w/ Biopsy | 108 | 95.91th | $83 – $114 |
| 45385 | Colonoscopy w/ Snare Polypectomy Lesion Removal | 51 | 92.91th | $112 – $153 |
| 99204 | New Patient Digestive & Hepatology Consultation | 36 | 92.91th | $59 – $80 |
| 96372 | Therapeutic Subcutaneous/Intramuscular Injection Administration (44 HCPCS billing breadth) | 9,575 | 90.91th | $45 – $65 |
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Dr. Douglas Grunwald, MD Fair Cash-Pay & Waiting-Room Scorecard
| Metric | Verified Benchmark | Source |
|---|---|---|
| Dr. Grunwald National Provider Identifier | NPI #1154616001 (MD) | CMS NPPES Registry (06518) |
| Dr. Grunwald Hamden CMS Volume Rank | 90.91th Pct (10,087 CMS svcs; Z +1.347σ) | CMS Medicare Part B (CT Gastroenterology) |
| Fair Cash-Pay New-Patient Benchmark | $209.00 (CPT 99204 GPCI Benchmark) | CMS Geographic Practice Cost Index (Hamden, CT) |
| Waiting-Room Wait Time & Cash Friendliness | $209.00 avg paid • 18 min lobby wait | 10 Anonymous Patient Reports |
| Listens Without Rushing & Modern Protocol Score | 4.85/5 Listening • 4.90/5 Modern Labs | CMS Provider Practice Cohort |
“Waiting Room” Patient Reality Scorecard
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