Benjamin Ernst, M.D.
NPI 1518162247 · Retina Specialist (Ophthalmology) Physician · Appleton, WI
Enrolled with Medicare as Practitioner - Ophthalmology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Benjamin Ernst, M.D. is a Retina Specialist (Ophthalmology) Physician provider in Appleton, WI (NPI 1518162247).
Provider details
- NPI number
- 1518162247
- Entity type
- Individual
- Primary specialty
- Retina Specialist (Ophthalmology) PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 48790 (CO)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
3,171 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Imaging of Retina92134 | 1,400 | $38 |
| Injection of Drug Into Eye67028 | 1,152 | $116 |
| Established Patient Problem Focused Exam of Visual System92012 | 334 | $84 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 70 | $85 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 68 | $156 |
| New Patient Complete Exam of Visual System92004 | 52 | $141 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 4 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Prednisolone Acetate | 39 | 25 |
| Ketorolac Tromethamine | 22 | 11 |
| Timolol Maleate | 13 | — |
| Latanoprost | 13 | — |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-06-21
- Last updated
- 2023-09-21
- Certified
- 2023-09-21
Frequently asked questions
- What is Benjamin Ernst's NPI number?
- Benjamin Ernst's National Provider Identifier (NPI) is 1518162247, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Benjamin Ernst's specialty?
- Benjamin Ernst is listed in the NPPES registry with a primary specialty of Retina Specialist (Ophthalmology) Physician (Allopathic & Osteopathic Physicians).
- Where is Benjamin Ernst located?
- Benjamin Ernst's practice location on file with NPPES is 442 N Westhill Blvd Ste a, Appleton, WI 54914-5830.
- What is Benjamin Ernst's phone number?
- The practice phone number listed in the NPPES registry for Benjamin Ernst is (920) 751-8666.
- Does Benjamin Ernst accept Medicare?
- Benjamin Ernst is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Benjamin Ernst's NPI active?
- Yes — Benjamin Ernst's NPI (1518162247) is active in the NPPES registry as of the last update on 2023-09-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.