Quick answers
- Where does Ruth L. Guevara see patients?
- Medicare's clinician data lists 2 practice locations, including Bay Shore, NY and Amityville, NY. Call before your visit to confirm the address.
- What is Ruth L. Guevara's specialty?
- Medicare lists Family Practice as the primary specialty.
- Does Ruth L. Guevara accept Medicare assignment?
- Yes. Medicare's clinician data says Ruth L. Guevara 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 Ruth L. Guevara?
- (631) 238-3064, as listed in official Medicare / NPI Registry data.
- What is Ruth L. Guevara's NPI number?
- 1154556199. 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 Ruth L. Guevara is enrolled with Medicare (CMS data updated 2026-10-02).
- 603 E Main St, BBay Shore, NY 11706 (631) 238‑3064
- 801 Broadway, Suite 100Amityville, NY 11701 (516) 784‑4486
Group practices
Medicare enrollment lists Ruth L. Guevara as a member of this group (CMS data updated 2026-10-02).
- North Shore Lij Urgent Care PC390 clinicians in the group
Specialties
- Family Practiceprimary
Other family doctors in Bay Shore
Clinicians with the same Medicare primary specialty in Bay Shore, NY — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2003 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1154556199 |
| 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