Quick answers
- Where does Marlo K. Castelo see patients?
- Medicare's clinician data lists 2 practice locations, including Riverhead, NY and Franklin Sq, NY. Call before your visit to confirm the address.
- What is Marlo K. Castelo's specialty?
- Medicare lists Physician Assistant as the primary specialty.
- Does Marlo K. Castelo accept Medicare assignment?
- Yes. Medicare's clinician data says Marlo K. Castelo 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.
- Does Marlo K. Castelo offer telehealth?
- Medicare's clinician data says Marlo K. Castelo offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Marlo K. Castelo?
- (631) 208-4460, as listed in official Medicare / NPI Registry data.
- What is Marlo K. Castelo's NPI number?
- 1942519061. 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 Marlo K. Castelo is enrolled with Medicare (CMS data updated 2026-10-02).
- 170 Old Country RdRiverhead, NY 11901 (631) 208‑4460
- 71 Franklin AveFranklin Sq, NY 11010 (845) 738‑8770
Group practices
Medicare enrollment lists Marlo K. Castelo as a member of these groups (CMS data updated 2026-10-02).
- Suffolk Primary Health LLC61 clinicians in the group
- Lagrangeville Medical PC23 clinicians in the group
Specialties
- Physician Assistantprimary
Other physician assistants in Riverhead
Clinicians with the same Medicare primary specialty in Riverhead, NY — not a recommendation.
Clinician information
| Credential | PA |
|---|---|
| Graduation year | 2020 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1942519061 |
| 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