Quick answers
- Does John W. Butler accept Medicare assignment?
- Yes. Medicare's clinician data says John W. Butler accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does John W. Butler see?
- In 2024, CMS data shows 1,330 Original Medicare patients and 67,029 services for John W. Butler. This counts Original Medicare only and measures volume, not quality.
- What is John W. Butler's NPI number?
- 1174521264. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for John W. Butler, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 1,330 |
|---|---|
| Services billed to Medicare | 67,029 |
| Different services or procedures | 51 |
| Participating Medicare provider | Yes |
| Average age of these patients | 78 |
Most frequent services
- Injection, faricimab-svoa, 0.1 mg (J2777)50,460 services
- Imaging of retina (92134)3,875 services
- Injection, aflibercept, 1 mg (J0178)2,638 services
- Injection, pegcetacoplan, intravitreal, 1 mg (J2781)2,520 services
- Injection of drug into eye (67028)2,308 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High blood pressure75%
- High cholesterol75%
- Arthritis47%
- Diabetes39%
- Ischemic heart disease34%
- Chronic kidney disease29%
Hospitals where John W. Butler works
Medicare's Facility Affiliation Data lists John W. Butler at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- Bayhealth Hospital, Sussex CampusMilford, DE · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 080009
- Bayhealth Medical Center, Kent CampusDover, DE · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 080004
- Beebe Medical CenterLewes, DE · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 080007
- Tidalhealth Atlantic IncBerlin, MD · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 210061
- Tidalhealth Peninsula Regional, IncSalisbury, MD · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 210019
Practice locations
Addresses where John W. Butler is enrolled with Medicare (CMS data updated October 2, 2026).
- 200 Kona CirMilford, DE 19963 (302) 491‑4497
- 6511 Deer Pointe DrSalisbury, MD 21804 (410) 546‑8037
Group practices
Medicare enrollment lists John W. Butler as a member of this group (CMS data updated October 2, 2026).
- Retina Consultants of Delmarva PA4 clinicians in the group
Specialties
- Ophthalmologyprimary
Other ophthalmologists in Milford
Clinicians with the same Medicare primary specialty in Milford, DE — not a recommendation.
Other clinicians in Retina Consultants of Delmarva PA
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Maryland School Of Medicine |
| Graduation year | 1995 (31 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1174521264 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians