David D. Ernst, O.D.
Optometrist · O Fallon, IL
David D. Ernst, O.D. is an optometrist with a practice address in O Fallon, Illinois, and NPI 1306076518, issued on Jul 22, 2009. Check the license (Illinois 046010290, as entered in NPPES) with the Illinois board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- David D. Ernst
- Credential
- O.D.
- Primary taxonomy
- Optometrist 152W00000X
- License number
- 046010290 IL
Self-reported in NPPES; status is on the state search - Practice location
- 735 Insight Ave, O Fallon, IL 62269
- Phone
- (618) 628-2903
- Enumerated
- Jul 22, 2009
- Record last updated
- Dec 11, 2019 (not updated in 7 years: call before relying on the address or phone)
- Fax
- (618) 628-2913
- Medicaid ID
- 046010290 IL
- Medicare enrollment
- Enrolled (PECOS I20090817000270); accepts Medicare assignment
- Medical or professional school
- University Of Nebraska College Of Medicine, 2009
- Entity
- Type 1 · individual
8 nearest optometrist records → All 2,697 in Illinois → Look up another NPI →
Also registered at 735 Insight Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Kelli Cadion Crago, ODOptometrist1386752681
- Vivian Kloke, ODOptometrist1346358645
- Holly Regel, ODOptometrist1679144067
- Jessica Weis, ODCorneal and Contact Management Optometrist1205406766
Verify David D. Ernst in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Illinois board licenses this profession
Search for license 046010290Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
30% fewer Medicare Part D claims than the average optometrist in 2024
194 Medicare Part D claims for 67 beneficiaries, against an average of 277 among the 33,128 providers of this specialty who prescribed in Part D. Brand-name drugs were 29% of claims.
Most prescribed
- Latanoprost84 claims
- Prednisolone Acetate20 claims
- Brimonidine Tartrate16 claims
- Timolol Maleate13 claims
- Neomycin-Polymyxin-Dexameth12 claims
- Restasis12 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The MIPS final score for 2023 (Medicare payment program): 84.9 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $468.43
21 payments; by number, the most common kind was food and beverage; the largest payer was Bausch & Lomb Americas Inc. The 34,453 providers of this specialty with any payment received $769.99 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Family Eye Care OF Ofallon PCO Fallon, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
David D. Ernst among 2,697 optometrist records in Illinois
David D. Ernst, O.D. is one of 2,697 optometrist records with a practice address in Illinois. 71% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2009, is newer than 56% of them.
- NPI issued2009 · 56% of these records are older, 42% newer
- In a Medicare fileYes · 71% of these records are
- In the CMS Doctors and Clinicians fileYes · 56% of these records are
- Graduated2009 · median 2008 among the 1,513 with a school on file
- Record last updated2019 · 68% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 152W00000X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
9 optometrist records list a practice address in O Fallon
They are 9 of the 1,077 NPPES records with a practice address in O Fallon, and 2,697 optometrist records in Illinois.
All 2,697 in Illinois → Every provider in O Fallon → Optometrist nationwide →
The 8 optometrist records with the nearest ZIP codes
- Kelli Cadion Crago, ODO Fallon, IL 622691386752681
- Keith Hamm, O.D.Shiloh, IL 622691225023401
- Vivian Kloke, ODO Fallon, IL 622691346358645
- Aideen McEnaney, ODO Fallon, IL 622691770343246
- Sherri Morris, ODO Fallon, IL 622691033534086
- Holly Regel, ODO Fallon, IL 622691679144067
- Chih Jen Wang, O.D.O Fallon, IL 622691861443079
- J Weber, O.D.O Fallon, IL 622691205845187
Common questions
What is David D. Ernst, O.D.'s NPI number?
David D. Ernst, O.D.'s National Provider Identifier (NPI) is 1306076518, issued on Jul 22, 2009. An NPI identifies a provider in billing; it is not a license.
Where is David D. Ernst, O.D. located?
The NPPES record lists a practice address at 735 Insight Ave, O Fallon, IL, 62269. Phone: (618) 628-2903. Providers update this record themselves, so call before visiting.
How can I verify David D. Ernst, O.D.'s license?
NPPES lists Illinois license number 046010290, as entered by the provider. Search the Illinois board that licenses this profession; the NPPES record confirms identity only.
How much does David D. Ernst, O.D. prescribe under Medicare Part D?
In 2024, David D. Ernst, O.D. had 194 Medicare Part D claims for 67 beneficiaries; the average among optometrist prescribers was 277. Part D covers Medicare prescriptions only.
What is David D. Ernst, O.D.'s MIPS final score?
The 2023 MIPS final score is 84.9 of 100. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.