Quick answers
- Does Richard J. Lewis accept Medicare assignment?
- Yes. Medicare's clinician data says Richard J. Lewis 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 Richard J. Lewis see?
- In 2024, CMS data shows 25 Original Medicare patients and 104 services for Richard J. Lewis. This counts Original Medicare only and measures volume, not quality.
- What is Richard J. Lewis's NPI number?
- 1558780189. 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 Richard J. Lewis, 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 | 25 |
|---|---|
| Services billed to Medicare | 104 |
| Different services or procedures | 5 |
| Participating Medicare provider | Yes |
| Average age of these patients | 66 |
Most frequent services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)85 services
- Psychiatric diagnostic evaluation with medical services (90792)11 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%
- Depression75%
- Anxiety75%
- High cholesterol72%
- Arthritis52%
Practice locations
Addresses where Richard J. Lewis is enrolled with Medicare (CMS data updated October 2, 2026).
- 75 N Country RdPort Jefferson, NY 11777 (631) 473‑1320
Group practices
Medicare enrollment lists Richard J. Lewis as a member of this group (CMS data updated October 2, 2026).
- John T Mather Memorial Hospital175 clinicians in the group
Specialties
- Psychiatryprimary
Other psychiatrists in Port Jefferson
Clinicians with the same Medicare primary specialty in Port Jefferson, NY — not a recommendation.
Other clinicians in John T Mather Memorial Hospital
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Medical school | Icahn School Of Medicine At Mount Sinai |
|---|---|
| Graduation year | 2014 (12 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1558780189 |
| 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
- 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