Lawrence William Ernst, OD
- Medicare patients, 2024
- 135
- Part D claims, 2024
- 292
- Industry payments
- $112
- Affiliated sites
- 3
- Medical groups
- 3
- Practice address
- 17 Ronnies Plz, Saint Louis, MO 63126-3552
- Practice phone
- Call (314) 843-2020
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Rosen Optometry
Eye care practice · Saint Louis, Missouri
Find Lawrence 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.
Lawrence William Ernst is an optometrist in Saint Louis, Missouri
Lawrence Ernst practices at Rosen Optometry in Saint Louis, Missouri.
Lawrence Ernst's NPI, 1972555167, was assigned on May 16, 2006. Lawrence Ernst graduated from University Alabama Birmingham - School of Optometry in 1990. Lawrence Ernst holds Missouri license T02923.
- NPI
- 1972555167NPI Registry (opens in a new tab)
- Medicare PAC ID
- 2860497807
- NPI enumeration date
- May 16, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (314) 843-2020
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 62
- Medical school graduation
- 1990
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Lawrence William Ernst practices at Rosen Optometry in Saint Louis, Missouri
Lawrence Ernst's primary practice is Rosen Optometry, at 17 Ronnies Plz, Saint Louis, MO 63126-3552. The practice phone is (314) 843-2020.
- Rosen Optometry17 Ronnies Plz, Saint Louis, MO 63126-3552Phone(314) 843-2020
Source: Dmand AI Affiliation Data
Lawrence William Ernst is affiliated with 3 sites of care and 3 medical groups
Lawrence Ernst's primary practice is Rosen Optometry in Saint Louis, Missouri. Dmand AI also links Lawrence Ernst to 3 medical groups and 2 group practices and clinics, each named with a free account.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Lawrence William Ernst's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Lawrence Ernst practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Rosen Optometry | Available with a free account |
| +2 more sites and 3 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Lawrence William Ernst is one of 866 optometrists in Missouri
Optometrist is Lawrence Ernst's primary specialty in the NPI Registry, under taxonomy code 152W00000X. Lawrence Ernst is licensed in Missouri.
Specialties and state licenses
- Optometrist, MissouriPrimary
Optometrists near Lawrence 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
Lawrence William Ernst treated 135 Medicare patients in 2024, average age 74
CMS counts 135 Medicare patients who saw Lawrence Ernst in 2024. The largest group is 65 to 74, with 77 patients. 75% of them have high cholesterol, and 73% have high blood pressure. Their average risk score is 0.90, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Lawrence Ernst's median patient age at 70, with 60% women.
Lawrence Ernst's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Lawrence Ernst's Medicare patients by sex, 2024
- Women6951%
- Men6649%
Chronic conditions among Lawrence Ernst's Medicare patients, 2024
- High cholesterol75%
- High blood pressure73%
- Arthritis36%
- Diabetes25%
- Chronic kidney disease24%
- Ischemic heart disease19%
- Anxiety18%
- Depression18%
Share of Medicare patients with each condition. A patient can have several.
Lawrence 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
- Women60%
- Men39%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Lawrence William Ernst wrote 292 Medicare Part D claims in 2024
In 2024, Lawrence Ernst wrote 292 Medicare Part D claims for 62 patients. 74% of them were for generic drugs.
Lawrence Ernst's Part D claims by kind of drug, 2024
- Generic216 claims74%
- Brand-name76 claims26%
Drug classes CMS tracks in Lawrence Ernst's Part D claims, 2024
- Antibiotics5%15 of 292 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
Lawrence William Ernst ranks in the 51st percentile for cataract surgery in Medicare
Lawrence Ernst accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 27 procedures of cataract surgery by Lawrence Ernst, more than 51% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
Where Lawrence Ernst ranks in Medicare procedure volume
- Cataract surgery
- 51st percentile27 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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Lawrence William Ernst received $112 in industry payments in 2025
CMS Open Payments shows 5 general payments to Lawrence Ernst from 3 drug and device companies in 2025. Food and beverage make up the largest share, 100% of the total. Alcon Laboratories Inc paid the most, $65.
Companies that paid Lawrence 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
Lawrence William Ernst graduated from University Alabama Birmingham - School of Optometry
Lawrence Ernst graduated from University Alabama Birmingham - School of Optometry in 1990.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Lawrence William 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)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 Lawrence William 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 Lawrence William Ernst's NPI number?
Lawrence William Ernst's NPI number is 1972555167. It was assigned on May 16, 2006, and it is active in the NPI Registry.
What does Lawrence William Ernst specialize in?
Lawrence William Ernst is an optometrist in Saint Louis, Missouri. The primary specialty in the NPI Registry is Optometrist (taxonomy code 152W00000X).
Where does Lawrence William Ernst practice?
Lawrence Ernst practices at 17 Ronnies Plz, Saint Louis, MO 63126-3552. Lawrence Ernst's primary practice is Rosen Optometry in Saint Louis, Missouri. Dmand AI also links Lawrence Ernst to 3 medical groups and 2 group practices and clinics.
What is Lawrence William Ernst's office phone number?
The practice phone on file for Lawrence Ernst is (314) 843-2020.
What is Lawrence William Ernst's medical license number?
Lawrence Ernst holds Missouri license T02923.
Does Lawrence William Ernst accept Medicare?
Yes. CMS lists Lawrence Ernst as accepting Medicare assignment.
How many Medicare patients does Lawrence William Ernst see?
CMS counts 135 Medicare patients who saw Lawrence Ernst in 2024, with an average age of 74.
Where did Lawrence William Ernst go to medical school?
Lawrence Ernst graduated from University Alabama Birmingham - School of Optometry in 1990.
Has Lawrence William Ernst received payments from drug or device companies?
CMS Open Payments shows $112 in general payments to Lawrence Ernst from 3 companies from 2025 to 2025. The largest total came from Alcon Laboratories Inc.
How long has Lawrence William Ernst been practicing?
Lawrence Ernst graduated from medical school in 1990, 36 years ago.
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