Dr. Benjamin John Ernst, MD
- Medicare services, 2024
- 10,891
- Medicare patients, 2024
- 423
- Part D claims, 2024
- 122
- MIPS score, 2024
- 100
- Hospital affiliations
- 2
- Practice address
- 723 Park Ridge Ln, North Fond Du Lac, WI 54937
- Practice phone
- Call (920) 751-8666
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Northeast Wisconsin Retina Associates SC
North Fond Du Lac, Wisconsin
Find Dr. 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.
Dr. Benjamin John Ernst is a retina specialist (ophthalmology) physician in North Fond Du Lac, Wisconsin
Dr. Ernst practices at Northeast Wisconsin Retina Associates SC in North Fond Du Lac, Wisconsin.
Dr. Ernst's NPI, 1518162247, was assigned on June 21, 2007. Dr. Ernst graduated from Saint Louis University School of Medicine in 2006. Dr. Ernst holds Wisconsin license 57459020.
- NPI
- 1518162247NPI Registry (opens in a new tab)
- Medicare PAC ID
- 1557485992
- NPI enumeration date
- June 21, 2007
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (920) 751-8666
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 46
- Medical school graduation
- 2006
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Benjamin John Ernst practices at Northeast Wisconsin Retina Associates SC in North Fond Du Lac, Wisconsin
Dr. Ernst's primary practice is Northeast Wisconsin Retina Associates SC, at 723 Park Ridge Ln, North Fond Du Lac, WI 54937 in Fond Du Lac County. The practice phone is (920) 751-8666.
- Northeast Wisconsin Retina Associates SC723 Park Ridge Ln, North Fond Du Lac, WI 54937 · Fond Du Lac CountyPhone(920) 751-8666
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Benjamin John Ernst is affiliated with 4 sites of care and 1 medical group
Dr. Ernst's primary practice is Northeast Wisconsin Retina Associates SC in North Fond Du Lac, Wisconsin. Dr. Ernst is also affiliated with ThedaCare Regional Medical Center-Neenah. Dmand AI also links Dr. Ernst to 1 more hospital, 1 group practice or clinic and 1 medical group, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Benjamin John Ernst's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Ernst practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Northeast Wisconsin Retina Associates SC | Available with a free account |
| +3 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Benjamin John Ernst is one of 21 retina specialist (ophthalmology) physicians in Wisconsin
Retina specialist is Dr. Ernst's primary specialty in the NPI Registry, under taxonomy code 207WX0107X. Dmand AI has Dr. Ernst's licenses on file in 2 states: Wisconsin and Colorado.
Specialties and state licenses
- Retina specialist (ophthalmology), WisconsinPrimary
- Ophthalmology, Colorado
Retina specialist (ophthalmology) physicians near Dr. Ernst
Counts of retina specialist (ophthalmology) physicians 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
Dr. Benjamin John Ernst billed Medicare for 10,891 services in 2024
CMS data shows 10,891 Medicare services from Dr. Ernst across 13 procedure codes in 2024, for 423 Medicare patients. Medicare paid $1,015,828 for them. Every service was in an office.
Dr. Ernst's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Drugs given in the office
- 2023: 2,0442024: 7,720278%
- Tests and treatments
- 2023: 1,8712024: 1,8491%
- Surgery
- 2023: 1,1632024: 1,168No change
- Office and hospital visits
- 2023: 1092024: 15441%
- Imaging
- 2023: 192024: 0100%
Dr. Ernst compared with the Wisconsin median for retina specialist (ophthalmology) physicians, 2024
- Dr. Ernst
- Wisconsin median
- Medicare services
- 10,891vs 8,95722% above
- Medicare patients
- 423vs 4547% below
- Part D claims
- 87vs 21660% below
Medians across 24 retina specialist (ophthalmology) physicians in Wisconsin with Dmand AI profiles that report each measure.
Dr. Ernst's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
Need commercial claims for Dr. Ernst?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Ernst and other retina specialist (ophthalmology) physicians in Wisconsin.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Benjamin John Ernst treated 423 Medicare patients in 2024, average age 77
CMS counts 423 Medicare patients who saw Dr. Ernst in 2024. The largest group is 65 to 74, with 159 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 7% are also on Medicaid. Their average risk score is 1.45, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Ernst's median patient age at 74, with 54% women.
Dr. Ernst's Medicare patients by age, 2024
Dr. Ernst's Medicare patients by sex, 2024
- Women23856%
- Men18544%
Chronic conditions among Dr. Ernst's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis38%
- Chronic kidney disease34%
- Diabetes32%
- Ischemic heart disease31%
- Atrial fibrillation24%
- Heart failure21%
Share of Medicare patients with each condition. A patient can have several.
Dr. 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 74
Patient panel by sex, all payers
- Women54%
- Men46%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Benjamin John Ernst wrote 122 Medicare Part D claims in 2024
In 2024, Dr. Ernst wrote 122 Medicare Part D claims for 48 patients. 52% of them were for generic drugs. CMS names the drug for 87 of them, across 4 drugs with 11 or more claims each, at $3,201 in total drug cost. In 2023, CMS named 97 claims across 4 drugs.
Dr. Ernst's Part D claims by kind of drug, 2024
- Generic64 claims52%
- Brand-name58 claims48%
Dr. Ernst's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 972024: 8710%
Drugs named by CMS: 4 in 2024, 4 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
Dr. Benjamin John Ernst scored 100 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 100 out of 100 for Dr. Ernst for performance year 2024, reported as part of a group. Dr. Ernst accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. Ernst's MIPS scores, performance year 2024
- 100of 100Final score
- 100of 100Quality
- 40of 100Improvement Activities
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Cataract surgery: 1 to 10 procedures (CMS shows small counts as a range)
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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Dr. Benjamin John Ernst received $3,158 in industry payments from 2016 to 2025
CMS Open Payments shows 23 general payments to Dr. Ernst from 9 drug and device companies from 2016 to 2025. Ownership or investment make up the largest share, 87% of the total. US Retina LLC paid the most, $2,762.
General payments to Dr. Ernst by program year, 2016 to 2025
General payments to Dr. Ernst by kind, 2016 to 2025
- Ownership or investment$2,76287%
- Food and beverage$38112%
- Education$150%
Companies that paid Dr. Ernst the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Benjamin John Ernst graduated from Saint Louis University School of Medicine
Dr. Ernst graduated from Saint Louis University School of Medicine in 2006.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Benjamin John 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 | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| 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 and Drug (CMS) (opens in a new tab)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 Dr. Benjamin John 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 Dr. Benjamin John Ernst's NPI number?
Dr. Benjamin John Ernst's NPI number is 1518162247. It was assigned on June 21, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. Benjamin John Ernst?
Dr. Benjamin John Ernst is a retina specialist (ophthalmology) physician in North Fond Du Lac, Wisconsin. The primary specialty in the NPI Registry is Retina Specialist (Ophthalmology) Physician (taxonomy code 207WX0107X).
Where does Dr. Benjamin John Ernst practice?
Dr. Ernst practices at 723 Park Ridge Ln, North Fond Du Lac, WI 54937. Dr. Ernst's primary practice is Northeast Wisconsin Retina Associates SC in North Fond Du Lac, Wisconsin. Dmand AI also links Dr. Ernst to 1 hospital, 1 group practice or clinic and 1 medical group.
What is Dr. Benjamin John Ernst's office phone number?
The practice phone on file for Dr. Ernst is (920) 751-8666.
What is Dr. Benjamin John Ernst's medical license number?
Dr. Ernst holds Wisconsin license 57459020, one of the licenses on file in 2 states.
Which states has Dr. Benjamin John Ernst been licensed in?
Dmand AI has state licenses on file for Dr. Ernst in Wisconsin and Colorado.
Which hospitals is Dr. Benjamin John Ernst affiliated with?
Dr. Ernst is affiliated with ThedaCare Regional Medical Center-Neenah. Dmand AI links Dr. Ernst to 1 more hospital.
Does Dr. Benjamin John Ernst accept Medicare?
Yes. CMS data shows Dr. Ernst billed Medicare for 10,891 services in 2024, and Dr. Ernst accepts Medicare assignment.
What is Dr. Benjamin John Ernst's MIPS score?
Dr. Ernst's MIPS final score for performance year 2024 is 100 out of 100, reported as part of a group.
How many Medicare patients does Dr. Benjamin John Ernst see?
CMS counts 423 Medicare patients who saw Dr. Ernst in 2024, with an average age of 77.
Show 5 more questionsShow fewer questions
What services does Dr. Benjamin John Ernst bill to Medicare?
In 2024, Dr. Ernst's most billed Medicare services were injected or infused drug (J2777), eye exam or test (92134) and surgery: eye (67028).
Where did Dr. Benjamin John Ernst go to medical school?
Dr. Ernst graduated from Saint Louis University School of Medicine in 2006.
What drugs does Dr. Benjamin John Ernst prescribe most?
In 2024 Medicare Part D data, Dr. Ernst's most prescribed drugs by claims were Prednisolone Acetate, Ketorolac Tromethamine and Latanoprost.
Has Dr. Benjamin John Ernst received payments from drug or device companies?
CMS Open Payments shows $3,158 in general payments to Dr. Ernst from 9 companies from 2016 to 2025. The largest total came from US Retina LLC.
How long has Dr. Benjamin John Ernst been practicing?
Dr. Ernst graduated from medical school in 2006, 20 years ago.
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