Quick answers
- Where does Lawrence A. Walser see patients?
- Medicare's clinician data lists 1 practice location in Riverhead, NY. Call before your visit to confirm the address.
- What is Lawrence A. Walser's specialty?
- Medicare lists Pulmonary Disease as the primary specialty, and also Hospitalist.
- Does Lawrence A. Walser accept Medicare assignment?
- Yes. Medicare's clinician data says Lawrence A. Walser accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- What is the phone number for Lawrence A. Walser?
- (631) 548-6101, as listed in official Medicare / NPI Registry data.
- What is Lawrence A. Walser's NPI number?
- 1669486023. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Practice locations
Addresses where Lawrence A. Walser is enrolled with Medicare (CMS data updated 2026-10-02).
- 1 Heroes WayRiverhead, NY 11901 (631) 548‑6101
Group practices
Medicare enrollment lists Lawrence A. Walser as a member of this group (CMS data updated 2026-10-02).
- Central Suffolk Hospital95 clinicians in the group
Specialties
- Pulmonary Diseaseprimary
- Hospitalistalso
Other pulmonologists in Riverhead
Clinicians with the same Medicare primary specialty in Riverhead, NY — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | State University Of New York Downstate Medical Center |
| Graduation year | 1979 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1669486023 |
| 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 2026-10-02, retrieved 2026-10-29
- 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