Quick answers
- Does Blair S. Lewis accept Medicare assignment?
- Yes. Medicare's clinician data says Blair S. 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 Blair S. Lewis see?
- In 2024, CMS data shows 683 Original Medicare patients and 1,169 services for Blair S. Lewis. This counts Original Medicare only and measures volume, not quality.
- What is Blair S. Lewis's NPI number?
- 1689765521. 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 Blair S. 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 | 683 |
|---|---|
| Services billed to Medicare | 1,169 |
| Different services or procedures | 26 |
| Participating Medicare provider | Yes |
| Average age of these patients | 75 |
Most frequent services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)373 services
- New patient office or other outpatient visit with straightforward medical decision making, if using time, 15 minutes or more (99202)159 services
- Biopsy of large bowel using a flexible endoscope (45380)92 services
- Removal of polyps or growths of large bowel using an endoscope with mechanical snare (45385)82 services
- Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43239)75 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 pressure56%
- Arthritis47%
- Osteoporosis29%
- Ischemic heart disease28%
- Diabetes26%
Practice locations
Addresses where Blair S. Lewis is enrolled with Medicare (CMS data updated October 2, 2026).
- 1067 5th AveNew York, NY 10128 (212) 369‑6600
Group practices
Medicare enrollment lists Blair S. Lewis as a member of this group (CMS data updated October 2, 2026).
- Blair S Lewis MD PC2 clinicians in the group
Specialties
- Gastroenterologyprimary
Other gastroenterologists in New York
Clinicians with the same Medicare primary specialty in New York, NY — not a recommendation.
Other clinicians in Blair S Lewis MD PC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1982 (44 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1689765521 |
| 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