Grant Wei-Siang Su, M.D.
Grant Wei-Siang Su is an Ophthalmology specialist based in Springfield, IL with over 25 years of clinical experience. Medicare-enrolled per CMS records and offers virtual telehealth visits.
Grant Wei-Siang Su, M.D. has practiced ophthalmology for 25+ years, working in group practice. He graduated from Tufts University School of Medicine in 2001 and has 25+ years of clinical experience. Among his Medicare patients, common conditions include hypertension, high cholesterol, and arthritis (per CMS data). CMS MIPS quality score: 75/100 (2023).
At a glance
- Prescribes opioids less than 39% of reporting doctors in Illinois
- Uses generic medications more than 91% of reporting doctors in Illinois
- Federal MIPS score higher than 10% of MIPS-scored doctors in Illinois
- Virtual visits available — no app or travel required
Older · 2195dNPPES updated 2020-05-19 · verify NPI on CMS · Verify license at Illinois Department of Financial & Professional Regulation — Medical
How Does This Doctor Compare?
Based on Medicare data, this doctor prescribes opioid pain medications conservatively, favors affordable generic drugs over brand-name ones.
MIPS Score
202375/100
Illinois avg: 88.6 · US avg: 83.6
⚠ Lower than most doctors nationally(-8.6 pts)
How the government rates this doctor's Medicare care quality. Scores above 75 are considered good.
Opioid Rx
↓ Lower = better1.59%
Illinois avg: 4.5 · US avg: 5.1
✓ Higher than most doctors nationally(-3.5 pts)
1.59% of this doctor's prescriptions are opioid pain medications. Lower means more cautious prescribing.
Generic Rx
↑ Higher = better96.7%
Illinois avg: 82.9 · US avg: 82.8
✓ Higher than most doctors nationally(+13.9 pts)
Top 9% of reporting doctors in IllinoisHow often this doctor prescribes affordable generic drugs instead of expensive brand-name ones.
Medicare Patients
788
Unique beneficiaries
High volumePrescription Recipients
512
Patients prescribed
Prescriptions Written
755
Total claims
Total Medicare drug cost: $11k
Percentile rankings compared against 2,844 reporting peers in Illinois.
Data Note: Sourced from CMS Medicare Provider Utilization & Payment Data. Percentile rankings compare this provider against all peers with reported data in the same state. Updated annually to reflect the latest federal reporting cycle.
What This Doctor Treats Most
Based on Medicare claims data — here's what patients commonly see this doctor for
Based on Medicare data, this doctor primarily manages Hypertension, High Cholesterol, and Arthritis.
High blood pressure — a leading risk factor for heart disease and stroke
US avg: 70.2%↑ More patients than average (+5%) — a focus area for this doctor
Elevated cholesterol or triglycerides that increase heart disease risk
US avg: 70.4%↑ More patients than average (+2%) — a focus area for this doctor
Joint inflammation causing pain, swelling, and stiffness
US avg: 49.3%↓ Fewer patients than average (-2%) — less common here
Reduced blood flow to the heart muscle, commonly known as coronary artery disease
US avg: 31.7%↓ Fewer patients than average (-1%) — less common here
A condition where the body cannot properly regulate blood sugar levels
US avg: 34.5%↓ Fewer patients than average (-7%) — less common here
Gradual loss of kidney function over time, often linked to diabetes or hypertension
US avg: 29.6%↓ Fewer patients than average (-10%) — less common here
Excessive worry or fear that interferes with daily life
US avg: 34.1%↓ Fewer patients than average (-14%) — less common here
Percentage of this provider's Medicare patients diagnosed with each condition. Source: CMS Utilization Data.
$68 received from industry
3 transactions reported in 2024 ·Low tier
Payments include consulting fees, speaking honoraria, food & beverage, travel, research support, and ownership interests from drug and medical device manufacturers. Disclosure is required by the federal Physician Payments Sunshine Act. These payments do not necessarily indicate conflicts of interest. National median: $338 across 136 000 tracked providers.
Tiers — Low: under $500 · Moderate: $500-5 000 · High: $5 000-25 000 · Very High: $25 000+. Source: CMS Open Payments 2024, attributed to Grant Wei-Siang Su's NPI.
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Background & Specialty
Education, training, and specialty classification from CMS NPPES and Medicare records.
Graduated medical school · 2001
Tufts University School of Medicine
Board certified · May 18, 2020
Self-reported via NPPES
25 years in practice
Experienced
An ophthalmologist has the knowledge and professional skills needed to provide comprehensive eye and vision care. Ophthalmologists are medically trained to diagnose, monitor and medically or surgically treat all ocular and visual disorders. This includes problems affecting the eye and its component structures, the eyelids, the orbit and the visual pathways. In so doing, an ophthalmologist prescribes vision services, including glasses and contact lenses.
Taxonomy: 207W00000X
Education & Training
Tufts University School of Medicine (Class of 2001)
Mailing address
1025 S 6th St, Springfield, IL 62703-2403
Differs from practice location
Virtual Ophthalmology Care With Grant Wei-Siang Su
NPPES records indicate this provider offers telehealth services. Contact the office to confirm availability and scheduling.
Schedule a virtual visit with Grant Wei-Siang Su for blood pressure monitoring, cholesterol management, arthritis follow-ups — no travel to Springfield required. The office sends a secure video link before your appointment. Most visits take 15–30 minutes. Medicare enrolled per CMS records.
Frequently Asked Questions
Common questions about Grant Wei-Siang Su
Dr. Su is listed as active in the NPI registry with telehealth listed in Springfield, IL. NPI status alone doesn't confirm open availability — call the office to confirm. Phone: (217) 528-7541.
Sourced from CMS NPPES · OIG LEIE · CMS QPP 2023 · CMS Medicare Part D · CMS Open Payments 2024 · CMS Physician Comparator. See Data Methodology.
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Contact Grant Wei-Siang Su
Practice Location
301 N 8th St, Springfield, IL 62701-1041
Mailing Address
1025 S 6th St, Springfield, IL 62703-2403
This is a provider directory. Contact the office directly to schedule appointments.
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