Dr. Errol Grannum, MD
1910 S 1st St, Mcallen, TX 78503 • +1-764-555-1292
Medical Education: Accredited U.S. Medical School (Class of 2000)
What This Doctor Actually Performs: CMS Medicare Utilization & Mcallen Percentiles
NPI #1508897935 • CBSA Regional • Ophthalmology
Anchored in Mcallen, TX 78503, Dr. Errol Grannum, MD (NPI 1508897935) logged 2,116 annual procedures (mid-cohort balanced caseload (38.46th Mcallen percentile), 41.98th TX percentile, -0.16σ) with sub-specialty concentration in 27 Active CMS HCPCS Codes.
Medicare Part B line-item claims for Dr. Errol Grannum (78503) place 92014 at the top of the practice ledger (783 yearly units, 38.46th metro rank), rounded out by 92134 and 92083.
For out-of-network patients contacting +1-764-555-1292, Dr. Grannum's practice posts a $209.00 GPCI self-pay consult estimate ($209.00 patient-logged median, 4.56/5 composite reality score over 23 submissions).
From 1910 S 1st St in Mcallen (+1-764-555-1292), Dr. Grannum, MD (26-year clinical track record) delivers 27 Active CMS HCPCS Codes care.
Compared against Mcallen, TX Ophthalmology peers
2,116 annual services across 325 beneficiaries
Standard deviations from TX Ophthalmology mean utilization
Top Billed HCPCS/CPT Procedures & GPCI Self-Pay Cash Benchmarks
| HCPCS | Clinical Procedure Description | Annual Volume | Local Pct | Est. Cash Range |
|---|---|---|---|---|
| 92014 | Comprehensive Ophthalmologic Slit-Lamp & Dilated Retinal Exam | 783 | 38.46th | $85 – $117 |
| 92134 | Scanning Computerized Ophthalmic Retinal OCT Imaging | 550 | 42.46th | $47 – $64 |
| 92083 | Extended Threshold Visual Field Glaucoma Perimetry | 360 | 34.46th | $56 – $77 |
| 92004 | New Patient Complete Medical Eye & IOP Evaluation | 254 | 39.46th | $103 – $141 |
| 66984 | Extracapsular Cataract Removal w/ Intraocular Lens Implant | 169 | 36.46th | $376 – $515 |
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Dr. Errol Grannum, MD Fair Cash-Pay & Waiting-Room Scorecard
| Metric | Verified Benchmark | Source |
|---|---|---|
| Dr. Grannum National Provider Identifier | NPI #1508897935 (MD) | CMS NPPES Registry (78503) |
| Dr. Grannum Mcallen CMS Volume Rank | 38.46th Pct (2,116 CMS svcs; Z -0.164σ) | CMS Medicare Part B (TX Ophthalmology) |
| Fair Cash-Pay New-Patient Benchmark | $209.00 (CPT 99204 GPCI Benchmark) | CMS Geographic Practice Cost Index (Mcallen, TX) |
| Waiting-Room Wait Time & Cash Friendliness | $209.00 avg paid • 13 min lobby wait | 23 Anonymous Patient Reports |
| Listens Without Rushing & Modern Protocol Score | 4.69/5 Listening • 4.78/5 Modern Labs | CMS Provider Practice Cohort |
“Waiting Room” Patient Reality Scorecard
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