David D. Ernst, OD
- Medicare patients, 2024
- 409
- Part D claims, 2024
- 194
- MIPS score, 2024
- 85
- Industry payments
- $303
- Affiliated sites
- 1
- Practice address
- 735 Insight Ave, O'Fallon, IL 62269-2193
- Practice phone
- Call (618) 628-2903
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Family Eye Care Of Ofallon
Eye care practice · O'Fallon, Illinois
Find David Ernst's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
David D. Ernst is an optometrist in O'Fallon, Illinois
David Ernst practices at Family Eye Care Of Ofallon in O'Fallon, Illinois.
David Ernst's NPI, 1306076518, was assigned on July 22, 2009. David Ernst graduated from University of Nebraska College of Medicine in 2009. David Ernst holds Illinois license 046010290.
- NPI
- 1306076518NPI Registry (opens in a new tab)
- Medicare PAC ID
- 7810041498
- NPI enumeration date
- July 22, 2009
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (618) 628-2903
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 43
- Medical school graduation
- 2009
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
David D. Ernst practices at Family Eye Care of Ofallon in O'Fallon, Illinois
David Ernst's primary practice is Family Eye Care of Ofallon, at 735 Insight Ave, O'Fallon, IL 62269-2193. The practice phone is (618) 628-2903.
- Family Eye Care of Ofallon735 Insight Ave, O'Fallon, IL 62269-2193Phone(618) 628-2903
Source: Dmand AI Affiliation Data
David D. Ernst is affiliated with 1 site of care and 2 medical groups
David Ernst's primary practice is Family Eye Care Of Ofallon in O'Fallon, Illinois. Dmand AI also links David Ernst to 2 medical groups, each named with a free account.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at David D. Ernst's practice
Dmand AI tracks the electronic health record (EHR) system at each site where David Ernst practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Family Eye Care Of Ofallon | Available with a free account |
| +2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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David D. Ernst is one of 2,194 optometrists in Illinois
Optometrist is David Ernst's primary specialty in the NPI Registry, under taxonomy code 152W00000X. David Ernst is licensed in Illinois.
Specialties and state licenses
- Optometrist, IllinoisPrimary
Optometrists near David Ernst
Counts of optometrists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
David D. Ernst treated 409 Medicare patients in 2024, average age 73
CMS counts 409 Medicare patients who saw David Ernst in 2024. The largest group is 65 to 74, with 252 patients. 75% of them have high cholesterol, and 69% have high blood pressure. Their average risk score is 0.89, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts David Ernst's median patient age at 70, with 52% women.
David Ernst's Medicare patients by age, 2024
David Ernst's Medicare patients by sex, 2024
- Women20650%
- Men20350%
Chronic conditions among David Ernst's Medicare patients, 2024
- High cholesterol75%
- High blood pressure69%
- Arthritis44%
- Diabetes32%
- Chronic kidney disease23%
- Ischemic heart disease23%
- Anxiety17%
- Mood disorders15%
Share of Medicare patients with each condition. A patient can have several.
David Ernst's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 70
Patient panel by sex, all payers
- Women52%
- Men47%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
David D. Ernst wrote 194 Medicare Part D claims in 2024
In 2024, David Ernst wrote 194 Medicare Part D claims for 67 patients. 71% of them were for generic drugs.
David Ernst's Part D claims by kind of drug, 2024
- Generic138 claims71%
- Brand-name56 claims29%
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
David D. Ernst scored 85 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 85 out of 100 for David Ernst for performance year 2024, reported individually. David Ernst accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 108 procedures of cataract surgery by David Ernst, more than 75% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
David Ernst's MIPS scores, performance year 2024
- 85of 100Final score
- 69.3of 100Quality
- 40of 100Improvement Activities
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Where David Ernst ranks in Medicare procedure volume
- Cataract surgery
- 75th percentile108 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Sources: Doctors and Clinicians National Downloadable File (CMS); Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026; and Doctors and Clinicians Utilization Data (CMS)
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David D. Ernst received $303 in industry payments in 2025
CMS Open Payments shows 9 general payments to David Ernst from 7 drug and device companies in 2025. Food and beverage make up the largest share, 100% of the total. Alcon Laboratories Inc paid the most, $79.
Companies that paid David Ernst the most, 2025 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
David D. Ernst graduated from University of Nebraska College of Medicine
David Ernst graduated from University of Nebraska College of Medicine in 2009.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for David D. Ernst's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation Data |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about David D. Ernst
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is David D. Ernst's NPI number?
David D. Ernst's NPI number is 1306076518. It was assigned on July 22, 2009, and it is active in the NPI Registry.
What does David D. Ernst specialize in?
David D. Ernst is an optometrist in O'Fallon, Illinois. The primary specialty in the NPI Registry is Optometrist (taxonomy code 152W00000X).
Where does David D. Ernst practice?
David Ernst practices at 735 Insight Ave, O'Fallon, IL 62269-2193. David Ernst's primary practice is Family Eye Care Of Ofallon in O'Fallon, Illinois. Dmand AI also links David Ernst to 2 medical groups.
What is David D. Ernst's office phone number?
The practice phone on file for David Ernst is (618) 628-2903.
What is David D. Ernst's medical license number?
David Ernst holds Illinois license 046010290.
Does David D. Ernst accept Medicare?
Yes. CMS lists David Ernst as accepting Medicare assignment.
What is David D. Ernst's MIPS score?
David Ernst's MIPS final score for performance year 2024 is 85 out of 100, reported individually.
How many Medicare patients does David D. Ernst see?
CMS counts 409 Medicare patients who saw David Ernst in 2024, with an average age of 73.
Where did David D. Ernst go to medical school?
David Ernst graduated from University of Nebraska College of Medicine in 2009.
Has David D. Ernst received payments from drug or device companies?
CMS Open Payments shows $303 in general payments to David Ernst from 7 companies from 2025 to 2025. The largest total came from Alcon Laboratories Inc.
How long has David D. Ernst been practicing?
David Ernst graduated from medical school in 2009, 17 years ago.
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