Quick answers
- Does William R. Maron Ii accept Medicare assignment?
- Yes. Medicare's clinician data says William R. Maron Ii 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 William R. Maron Ii see?
- In 2024, CMS data shows 239 Original Medicare patients and 581 services for William R. Maron Ii. This counts Original Medicare only and measures volume, not quality.
- What is William R. Maron Ii's NPI number?
- 1942646898. 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 William R. Maron Ii, 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 | 239 |
|---|---|
| Services billed to Medicare | 581 |
| Different services or procedures | 13 |
| Participating Medicare provider | Yes |
| Average age of these patients | 76 |
Most frequent services
- Established patient complete exam of visual system (92014)168 services
- Photography of the retina (92250)145 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)72 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)48 services
- Exam of visual field with extended testing (92083)41 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 cholesterol75%
- High blood pressure74%
- Diabetes35%
- Arthritis34%
- Chronic kidney disease28%
- Ischemic heart disease25%
Hospitals where William R. Maron Ii works
Medicare's Facility Affiliation Data lists William R. Maron Ii 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.
- Hartford HospitalHartford, CT · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 070025
Practice locations
Addresses where William R. Maron Ii is enrolled with Medicare (CMS data updated October 2, 2026).
- 19 Woodland St, Suite 41Hartford, CT 06105 (860) 233‑2020
- 21 Woodland StHartford, CT 06105 (860) 522‑5215
- 433 S Main St, Suite 103West Hartford, CT 06110 (860) 233‑2020
- 80 Seymour StHartford, CT 06102
Group practices
Medicare enrollment lists William R. Maron Ii as a member of these groups (CMS data updated October 2, 2026).
- Hartford Hospital1,044 clinicians in the group
- Solinsky Eyecare LLC17 clinicians in the group
Specialties
- Ophthalmologyprimary
Other ophthalmologists in Hartford
Clinicians with the same Medicare primary specialty in Hartford, CT — not a recommendation.
Other clinicians in Hartford Hospital
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Albany Medical College Of Union University |
| Graduation year | 2017 (9 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1942646898 |
| 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