Physician Profile
Unclaimed ProfileAbout ERNST
Based in O Fallon, IL, David D Ernst, O.D. is listed in the NPI registry under optometry. David graduated from University of Nebraska College of Medicine in 2009. David is also listed as specialising in optometrist.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.
Education & Training
Areas of Expertise
Common questions
What does Dr. Ernst specialise in?
Dr. Ernst is an optometry in O Fallon, IL. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “OPTOMETRY”.
NPI registry
Where is Dr. Ernst located?
Dr. Ernst is listed at 735 INSIGHT AVE, O Fallon, IL 62269. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Dr. Ernst's phone number?
The number on file is (618) 628-2903. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Dr. Ernst's NPI number?
Dr. Ernst's National Provider Identifier is 1306076518. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Where did Dr. Ernst go to medical school?
Dr. Ernst attended University of Nebraska College of Medicine, graduating in 2009. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Ernst been practising?
Dr. Ernst has 17 years experience. Calculated from a graduation year of 2009, reported in the CMS National Downloadable File.
CMS public data
What does Dr. Ernst do most often?
According to Medicare billing data, Dr. Ernst performs procedures including removal of cataract with insertion of prosthetic lens; provides treatments such as photography of the retina and exam of visual field with extended testing, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Dr. Ernst confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Ernst. If this is you, claiming it is free.
Guide.md
Licensing & Certification
Source: NPPES NPI Registry
Contact Information
- (618) 628-2903
- Email not available
Practice Locations
735 INSIGHT AVE
O Fallon, IL 62269
Procedures Most Often Billed to Medicare
8,148 services · 1,378 patients · 13 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Removal of cataract with insertion of prosthetic lens | Procedure | 66984 |
6,660 |
| Photography of the retina | Treatment | 92250 |
399 |
| Exam of visual field with extended testing | Treatment | 92083 |
133 |
| Established patient complete exam of visual system | Treatment | 92014 |
90 |
| Imaging of retina | Treatment | 92134 |
69 |
| Imaging of optic nerve | Treatment | 92133 |
60 |
| Established patient problem focused exam of visual system | Treatment | 92012 |
33 |
| Measurement of retinal and optic nerve function | Treatment | 92273 |
12 |
| Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient' | Billing code | G2211 |
277 |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
237 |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Other optometry specialists at this location 4
Same specialty, same street address — most likely the same department or group.
Also at this address 2
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
Other optometry specialists in O Fallon 3
Same specialty, same city.
More connections — 16 related providers in 3 groups
Trained at University of Nebraska College of Medicine 1
Other providers in the same specialty who trained at the same institution.
Class of 2009 at University of Nebraska College of Medicine 8
Providers who graduated from the same medical school in the same year.
Also performs Removal of cataract with insertion of prosthetic lens 7
Providers in IL who bill this service to Medicare most often.
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.